0.086_02 2017-12-23 T. R. Wyant Iridium 6 decayed December 23 2017. Update canned status for this. Kelso marks Iridium 34 tumbling, 96 partial December 22 2017. Update canned status for this. 0.086_01 2017-12-19 T. R. Wyant Kelso marks Iridiums 6, 19 & 22 as tumbling. Canned status table updated to reflect this. 0.086 2017-12-06 T. R. Wyant Mark Iridium 8 as decayed in canned status table. 0.085 2017-11-24 T. R. Wyant Kelso says Iridiums 5, 8, and 51 are tumbling. Canned status updated to reflect this. 0.084 2017-10-12 T. R. Wyant Add support for decayed Iridium satellites: * Carry them in canned status table * Have can_flare( 'all' ) return true regardless of satellite status. All this was triggered by Kelso's recognition that Iridium 77 had decayed. 0.083 2017-09-13 T. R. Wyant Add -decayed to eg/visual. This eliminates decayed bodies. I decided not to remove these from the magnitude table because of historical interest. Kelso removes 38253 from visual.txt. Decayed 2017-08-18. Kelso marks 25471 Iridium 77 failed Kelso marks 24949 Iridium 30 failed Kelso adds 33411 to visual.txt. Kelso adds 11251 METEOR 1-29 to visual.txt Use qsmag instead of mcnames to suppliment magnitudes in the canned magnitude table. As of July 24 2017 mcnames appeared to be double-compressed and corrupt besides. Both are maintained by Mike McCants, but the former is input to his QuickSat program and so likely to be less fragile. I hope. The mcnames file was eventually corrected, but I am sticking with qsmag for now. Kelso reports decay of Iridium 74. 0.082 2017-06-14 T. R. Wyant Kelso reports Iridium 79 out of service. 0.081 2017-05-26 T. R. Wyant Update canned magnitude table. Deprecate McCants' status. His web page notes itself as no longer maintained. Document impending changes in Iridium support. Kelso reports Iridiums 43 & 82 tumbling. Canned status changed in Astro::Coord::ECI::TLE to reflect this. 0.079 2017-04-26 T. R. Wyant Move satpass script from bin/ to script/ Mark OID 25041 (Iridium 40) tumbling, and 25042 (Iridium 41) spare per Kelso. The latter appears to have actually been declared spare in July 2016, but somehow I missed updating the canned status table. Kelso added OID 16719 (COSMOS 1743) to magnitudes 0.078 2017-02-10 T. R. Wyant Fix L<> links, and things that should have been L<> but were not. Thanks to Ben Bullock for the pull request. Add 'provides' data to ExtUtils::MakeMaker output Add 'base' to dependencies. 0.077 2016-12-03 T. R. Wyant Remove leading 0 from Space Track 3le names Handle year incompatibility between Time::Local and Time::y2038 This is the same problem as RT #118861 on Astro-App-Satpass2, and I applied the same solution. As a result of this, Astro::App::Satpass2::Utils now exports time_gm() and time_local(). 0.076 2016-11-06 T. R. Wyant Clean up Changes file. Version 0.075 had raw Git log for changes. Oops. 0.075 2016-11-06 T. R. Wyant Add estimated magnitude for Tiangong 2. Since I believe (per Wikipedia) that it is the same size as Tiangong 1, I am estimating the same absolute magnitude (4.0). 0.074 2016-09-04 T. R. Wyant Add HISTORICAL CALCULATIONS section to OVERVIEW. Correct almanac_hash() methods when station is defaulted to the body's station attribute rather than explicitly passed. Add eg/solstice 0.073 2016-08-07 T. R. Wyant Update Celestrak visual.txt date. No data change. Update canned Iridium statuses and magnitudes in Astro::Coord::ECI::TLE. Tweak satpass script geocoding heuristics. Tweak eg/visual for Perl 5.6.2. 0.072 2016-07-02 T. R. Wyant Set canned status for Iridium 57 (OID 25273) failed per Kelso. 0.071 2016-01-06 T. R. Wyant Add GitHub repository to metadata. Change satpass script to geocode using OSM. Also fix apparent bit rot in show command. Correct Astro::Coord::ECI->next_elevation(). Elevation was being calculated inconsistently, resulting in incorrect rise/set and begin/end twilight results inside the Arctic and Antarctic Circles on days when the Sun did not rise or set. This error may have been introduced in March 2012 with version 0.049_01, though it may go back to the original release. Thanks to Adam Osuchowski for finding this. 0.070 2015-06-25 T. R. Wyant The Astro::Coord::ECI::Sun almanac() method now returns the correct quarter descriptions (equinox, solstice) when the 'station' attribute is set to a location south of the Equator. The event detail (which is encoded as a number) does not change, but is now documented to refer to 'March equinox', and so on. Add -date option to eg/almanac 0.069 2015-06-07 T. R. Wyant Update canned status of Iridium 63 (OID 25286) 0.068 2015-03-26 T. R. Wyant Make the satpass script time zone functionality work with Date::Manip versions 6.49 and greater. Track changes in Mike McCants' magnitude data. 0.067 2014-11-10 T. R. Wyant Fix failure in t/tle_support.t. I hope. Add OID 15494 to canned magnitude table. 0.066 2014-10-16 T. R. Wyant Update Iridium 42 (OID 25077) to failed, per Kelso. Regenerate canned magnitude table. Croak on encountering JSON key SATNAME. This was replaced by OBJECT_NAME during the REST interface's beta. Remove installer question about installing satpass, per documented deprecation schedule. 0.065 2014-07-27 T. R. Wyant Prevent TLE manufacture for oddball objects. Add TLE pass variant PASS_VARIANT_TRUNCATE, which truncates passes to the beginning and end times given to pass(), rather then computing complete passes (and therefore requiring the satellite to rise and set). Expose Space Track time formatting and decoding routines for possible use by subclasses. The key routines __to_json() and __from_json() are still undocumented and considered highly experimental, though. Sorry. Add OID 00694 to Astro::Coord::ECI::TLE canned magnitudes. 0.064 2014-05-29 T. R. Wyant Add Astro::Coord::ECI::TLE method illuminated() 0.063 2014-05-02 T. R. Wyant Allow PASS_VARIANT_BRIGHTEST event even if the 'visible' attribute is false. Document magnitude functionality in satpass script. Add pass variant PASS_VARIANT_BRIGHTEST. If this is set, an event representing the time the satellite is brightest will be added to the pass. This is ignored if the calculation can not be made (e.g. if 'visible' is false, or 'intrinsic_magnitude' is undefined). Clarify Astro::Coord::ECI::Moon phase() docs. Eliminate uses of each() built-in. Add magnitude functionality to satpass script. 0.062 2014-04-01 T. R. Wyant Update canned status for Iridium 29 (24944). Kelso says it's tumbling. t/tle_json.t now only dumps versions on an error. Require correct Perl version in t/tle_mag.t In t/tle_json.t, work around problem that occurs when JSON::XS encodes a number in a locale that uses a comma as the decimal point, such as 'de_DE.UTF-8'. Make a note of this in Astro::Coord::ECI::TLE, since there is nothing I can do in my code to actually fix the problem. The 'unpack' built-in does not default to $_ as the buffer to unpack under Perls before 5.10. Have Astro::Coord::ECI::TLE magnitude() method set the station's time. Correct logic for building the fold_case() utliity subroutine under Perls before 5.16. Computation of (perhaps very) approximate magnitudes for satellites is now supported. Changes to support this include: - A magnitude() method on all classes that represent satellites; - An intrinsic_magnitude attribute (defaulting to undef) on Astro::Coord::ECI::TLE objects; - Default intrinsic_magnitude to 7 on Astro::Coord::ECI::TLE::Iridium objects; - A canned table of intrinsic magnitudes in Astro::Coord::ECI::TLE which includes most of the objects in the Celestrak visual list, with magnitudes from Mike McCants' mcnames.zip and vsnames.zip files; - Support in the Astro::Coord::ECI::TLE parse() method to set the magnitude of satellites that are in the table; - Static method magnitude_table() on Astro::Coord::ECI::TLE to maintain the canned magnitude table; - Modify the Astro::Coord::ECI::Sun magnitude() method to take an observing station argument (which is ignored) to be consistent with the same-named Astro::Coord::ECI::TLE method. The precess() and precess_dynamical() methods now do nothing to objects set to Earth-fixed coordinates. Previously they were converted to Ecliptic (and therefore inertial) coordinates, which manifested as a bug when the observing station was an attribute of a star. Support new (to us) Space Track JSON keys FILE, OBJECT_TYPE, ORDINAL and ORIGINATOR with same-named (except for being lower case) attributes. Method body_type() now returns the 'object_type' attribute if that is defined. If not it computes its return from the object name, like it always has. 0.061 2014-01-13 T. R. Wyant On install, warn that I intend to remove the 'install satpass' question asked by Build.PL and Makefile.PL. The only way to install the satpass script will be to run Build.PL or Makefile.PL with the '-y' option. Also warn of eventual package name change, from 'Astro-satpass' to 'Astro-Coord-ECI'. Warn every time Astro::Coord::ECI::TLE->parse() encounters JSON key SATNAME. This was removed while Space Track's REST interface is still in beta. Computation of a Doppler shift based on the station's 'frequency' attribute is now fatal. The body's 'frequency' attribute should be set instead. Remove all references to the satpass 'lit' setting and the corresponding Astro::Coord::ECI 'limb' attribute, which were deprecated out long since. Remove all mention of the 'upper' argument to the Astro::Coord::ECI azel() method. It's still an exception to pass a second argument, though. Remove all references to SOAP::Lite in the satpass code, except for POD saying it was gone. Various changes to Astro::Coord::ECI::TLE to try to support prospective classes representing non-orbiting objects. These are experimental, and may change or be retracted with little or no notice. The hope is a class that can represent the objects in one of NASA's .kmz files that are published for certain launches. These include: * Refactoring illumination and periodic position calculations in the pass() method; * Add public method intrinsic_events(), which returns events intrinsic to the body, rather than observational ones like rise and set, and call it in the pass() method; * Add protected (and therefore doubly experimental) method __pass_backup_earliest() to limit how hard the pass() method tries to find a rise time when the pass starts with the body above the horizon. I have no idea whether the class this is in support of will ever see the light of day. Improve Astro::Coord::ECI::Utils::find_first_true() documentation. 0.060 2013-12-18 T. R. Wyant In eg/almanac, correct the handling of -sun and -moon when exactly one is specified. The erroneous processing forced both to be asserted in all circumstances. Thanks to Mike Donn for reporting the problem. and pointing out the solution. 0.059 2013-12-03 T. R. Wyant Make the zero-argument form of the maidenhead() method conform to the docs. 0.058 2013-11-25 T. R. Wyant Handle undef period in pass(). At the moment it's handled by fudging in 90 minutes, which is bogus, but lets me experiment objects whose motion is defined by a list of positions. Add a paragraph on how passes are detected to the Astro::Coord::ECI::TLE pass() documentation. In the satpass script, implement 'sky lookup' in terms of Astro::SIMBAD::Client script() rather than query(), so that we do not need SOAP::Lite. 0.057 2013-07-08 T. R. Wyant Deprecate the satpass script. Modify the appulse algorithm when the appulsing body is a satellite, since the original algorithm did not necessarily converge to the correct time for satellites in similar orbits. Thanks to Vidar Tyldum for bringing this to my attention, and working with me on it. Go back to simply allowing invalid international launch designators. They started getting rejected about release 0.051_01 (2012-08-18). Thanks to Vidar Tyldum for bringing this to my attention, and working with me on it. Take spaces as equivalent to zeroes in numeric fields (which I believe is the old FORTRAN behavior), and in the numeric portions of the international launch designator. As a consequence of the above, the 'international' attribute will be zero-filled on retrieval. Update docs. Replace 'location' by 'station' where that is what is meant. Add a (very brief) explanation of times to the overview. Also add information on the Space Track REST interface to the overview. Deprecations: * The two-argument form of azel() is now fatal. * The satpass script fails if you try to geocode without Geo::Coder::Geocoder::US. * Use of the satpass script 'lit' setting is now fatal; instead use 'edge_of_earths_shadow'. * Use of the Astro::Coord::ECI::TLE 'limb' attribute is now fatal; instead use 'edge_of_earths_shadow'. * Feeding a JSON file to Astro::Coord::ECI::TLE->parse() which uses the SATNAME key is deprecated, and produces a warning. This warning will become fatal in the future. Instead use OBJECT_NAME. * Warn every time a Doppler shift is computed using the station's frequency. This will become fatal in the future. The frequency should be set on the orbiting object. 0.056 2012-12-08 T. R. Wyant Deprecation warnings: * The Doppler calculation warns the first time the frequency comes from the station rather than the satellite. * The satpass script warns every time geocoding is done if Geo::Coder::Geocoder::US is not installed. 0.055 2012-10-27 T. R. Wyant Workaround for problem with Date::Manip clobbering $ENV{PATH} when it is loaded. T. S. Kelso recorded Iridium 4 (OID 24796) as being out of service about midnight 20-Oct-2012 GMT. I have updated the canned status, since I know he calls Iridium LLC to get the status. Have the Astro::Coord::ECI::TLE status() method take optional OID arguments for the 'show' subcommand. 0.054 2012-10-09 T. R. Wyant Correct field TLE_LINE0 in the JSON TLE generated by Astro::Coord::ECI::TLE to include the leading '0 '. INCOMPATIBLE CHANGE: In the JSON representaion of a TLE, the common name of the body is now OBJECT_NAME, not SATNAME. This was done to track the usage of Space Track, which did not previously have the common name in its TLE data. The SATNAME field will still be used if it appears in input, but is being put through a deprecation cycle. 0.053 2012-09-10 T. R. Wyant Suppress the 'OK' after an st( set => ...) in the satpass script. Address satpass script Term::ReadLine load failures under the test harness by doing the load in an eval, and falling back to the non-ReadLine case. Update the canned status table in Astro::Coord::ECI for the fact that both Sladen and McCants call Iridium 51 (OID 25262) in service. 0.052 2012-09-05 T. R. Wyant Per schedule, the following deprecated items will produce a warning on each use: * The 'upper' argument of the Astro::Coord::ECI azel() method; * The Astro::Coord::ECI::TLE 'limb' attribute; * The satpass 'lit' setting. All these warnings will become fatal in the first release on or after March 1 2013. Remove support for the 'horizon' setting of the Astro::Coord::ECI 'almanac_horizon' attribute. This was introdiced in 0.051_01, but on second thought I decided the 'horizon' logic was ill-conceived. Change the JSON representation of the International Launch Designator to track Space Track change by Space Track to REST predicate INTLDES. Further corrections to t/tle_json.t for OS-dependant failures. Enhance Astro::Coord::ECI::TLE->parse() to parse Iridium status off the name if it is present. Fudge the JSON in t/tle_json.t for system-to-system differences in floating point representations (2-digit vs 3-digit exponent). Remove the -json output formatting option from the satpass tle() command. Instead, provide eg/convert_tle. Add attribute almanac_horizon to Astro::Coord::ECI. This sets the horizon for almanac calculations. The default is 0 (radians), but other values are possible, as well as 'horizon' (meaning, use the value of the 'horizon' attribute) and 'height' (meaning, depress the horizon for the height of the observer above sea level). The satpass script allows access to this. Add JSON support for Astro::Coord::ECI::TLE and Astro::Coord::ECI::TLE::Iridium. This includes the ability of Astro::Coord::ECI::TLE->parse() to handle JSON orbital elements from the Space Track REST interface (provided the optional JSON module can be loaded), and hooks in both classes for them to serialize themselves into Space-Track-like JSON. Add -json option to the satpass script's tle() command, to get canonical JSON output. Make use of DateTime (if available) to interpret a non-numeric Astro::Coord::ECI::TLE::Iridium zone attribute. If DateTime is not available, fall back to the old implementation of setting $ENV{TZ} and hoping localtime() responds to this. Correct the documentation of the Astro::Coord::ECI 'twilight' attribute, which really can not be set to 'civil', etc. 0.051 2012-06-08 T. R. Wyant Use YAML instead of YAML::Any, since they are both in the same distro, and YAML does not suffer from deprecation warnings. Add pass variant PASS_VARIANT_NO_ILLUMINATION. If attribute 'visible' is false, this causes no illumination calculations at all to be done. This seems to save 20% in calculation time, but your mileage may vary, especially inside the Arctic or Antarctic Circles. Have bin/satpass warn the first time it geocodes if geocoding is done directly using SOAP::Lite. Make the Astro::Coord::ECI azel_offset() Doppler calculation contingent on the availability of a radial velocity value. Reinstate the Doppler calculation in Astro::Coord::ECI's azel_offset(). Thanks to Vidar Tyldum for finding this omission. While in the Doppler code, made the satellite the primary source of the frequency. Getting the frequency from the observer object is being put through a deprecation cycle, and will eventually result in an error. 0.050 2012-05-04 T. R. Wyant The 'status iridium' command in the 'satpass' script is now fatal; it has been deprecated in favor of 'status show' for some time, issued a warning on every use since version 0.044. Have Astro::Coord::ECI method heliocentric_ecliptic_cartesian() set the object's {inertial} to true. Add module Astro::Coord::ECI::Mixin to provide common-logic methods which do not seem to fit the object hierarchy. Promote method ecliptic_longitude() from Astro::Coord::ECI::Sun to Astro::Coord::ECI. In Astro::Coord::ECI: * Add attribute 'sun', to hold the object used to convert to and from Heliocentric coordinates. * Add methods ecliptic_cartesian(), heliocentric_ecliptic(), and heliocentric_ecliptic_cartesian(). * Consolidate code for conversion between Cartesian and spherical coordinates. In Astro::Coord::ECI::Set: * Have the aggregate() method _not_ aggregate TLEs that have a blank ID and model 'null'. This piece of ad-hocery was necessary to prevent aggregation of "fake" TLEs representing different fixed points in space (e.g. as created by the satpass or satpass2 'geodetic' command). 0.049 2012-03-12 T. R. Wyant In the Astro::Coord::ECI precess_dynamical() method, set the time of the station attribute (if any) before precessing it. In Astro::Coord::ECI::TLE, throw an exception if the Sun never rises. This should not happen, but was encountered while sorting out the precess_dynamical() bug. Independently test appulses of all relevant classes, since this is how the precess_dynamical() bug manifested. In Astro::Coord::ECI::TLE::Set, override the get() method, and have get( 'tle' ) return the concatenated TLEs of all members. In Astro::Coord::ECI::TLE::Iridium reflection() method, fix two-argument azel() call. 0.048 2012-03-08 T. R. Wyant Add keplers_equation() to Astro::Coord::ECI::Utils. In the 'satpass' script's pass() subroutine, set the 'station' attribute of all bodies in the @sky array before passing them to the Astro::Coord::ECI::TLE pass() method. In the Astro::Coord::ECI::TLE::Iridium flare() method, set the 'station' attribute of the object that represents the center of the flare. Have the first use of the Astro::Coord::ECI::TLE 'limb' attribute, the satpass script 'lit' setting, and the Astro::Coord::ECI azel() method with an 'upper' argument display a warning. These were deprecated in September 2011. In Astro::Coord::ECI: * Have next_azimuth(), next_elevation(), and next_meridian() make use of the 'station' attribute if the invocant is the only Astro::Coord::ECI argument. Have Astro::Coord::ECI::TLE->parse() take, as an optional first argument, a reference to a hash that is used to initialize attributes not initialized by parsing the TLE data. Convert all eg/ scripts to use the 'station' attribute where possible, and the optional Astro::Coord::ECI::TLE->parse() hash argument where practical. In Astro::Coord::ECI: * Add 'station' attribute, as origin of observer-centered coordinate systems. If azel() is called with the invocant as the only Astro::Coord::ECI argument, it returns the coordinates of the invocant relative to the 'station' attribute. * Factor out the Cartesian portion of the azel() method, and add methods neu() and enu(), to provide local Cartesian coordinates relative to the 'station' attribute. * Add method equatorial_apparent(), to calculate apparent equatorial coordinates as seen from the location in the 'station' attribute. * Work on velocity transformations from eci() to ecef(), neu(), enu(), azel(), and equatorial(). All these seem sane to me, though I still have no worked examples to test against. I intend the use of the 'station' attribute to be the preferred way to get observer-relative coordinates. I would like to eventually deprecate $station->azel( $body ) and friends, as well as the practice of passing an explicit station to the pass() and flare() methods, but whether this actually happens is another question. 0.047 2012-01-20 T. R. Wyant Have the functionality related to the Astro::Coord::ECI::TLE 'pass_threshold' attribute (introduced in 0.046) take visibility into account if the 'visible' attribute is true. 0.046 2012-01-18 T. R. Wyant Add Astro::Coord::ECI::TLE attribute 'pass_threshold'. If set to something (in radians) other than undef, the sattelite's highest point during a pass must be at least this high for the pass to be reported. Support the 'pass_threshold' setting in the satpass script. Optional code that used to feel around for a YAML implementation now just uses YAML::Any. The utility subroutines deg2rad() and rad2deg() now support an argument of undef which, unsurprisingly, returns undef. The Changes file now conforms to Test::CPAN::Changes, and the author test xt/author/changes.t has been added to keep it so. 0.045 2011-12-05 T. R. Wyant Have the satpass script's geocode command favor Geo::Coder::Geocoder::US. Deprecate the use of SOAP::Lite. Have the satpass script set the height to 0 if the position was set by the geocode command, but height() failed. Update the copy of the GNU GPL in LICENSES/Copying to have the current FSF address. Document the release of Astro-App-Satpass2, and the eventual deprecation of the satpass script. Try to clarify how the atmospheric refraction calculation works. 0.044 2011-10-19 T. R. Wyant Require Test::More 0.88 for testing. The requirement was actually introduced in version 0.042. Thanks to Christopher Kybe for picking up this discrepancy. The satpass script's 'status iridium' command now generates a deprecation notice every time it is issued. 0.043 2011-08-29 T. R. Wyant The earthquake (Mineral Virginia USA) fire (Great Dismal Swamp) and flood (hurricane Irene) edition. Updated the canned Iridium status in Astro::Coord::ECI::TLE for McCants' and Sladen's reporting of Iridium 26 (OID 24903) as out of service. They also updated Iridium 23 (OID 24906) to show it in service rather than failed, but I have continued to follow Kelso in calling it a spare. Other than this, only documentation changes, mostly relating to the deprecation of the 'limb' attribute and its relation to the new 'edge_of_earths_shadow' attribute. In the satpass script, use the new 'edge_of_earths_shadow' setting in the 'flare' and 'position' commands, though the flare calculation does not actually make use of it. Replace the Astro::Coord::ECI::TLE 'limb' attribute and the satpass 'lit' setting with the 'edge_of_earth_shadow' attribute and setting. The new attribute and setting are numeric, and specify an increase in elevation (or decrease if negative) in units of the apparent radius of the body. The replaced attribute and setting still exist, but are deprecated, and will begin warning in the first release after March 1 2012. This setting/attribute is used by the pass calculation. Provide an Astro::Coord::ECI azel_offset() method, which takes, as its optional second argument, an offset applied to the elevation, in terms of the apparent radius of the body whose position is being calculated. The two-argument version of the azel() method is now deprecated, and will begin warning in the first release after March 1 2012. Override the Astro::Coord::ECI correct_for_refraction() method in Astro::Coord::ECI::TLE, Astro::Coord::ECI::Moon, and Astro::Coord::ECI::Sun. The override simply returns the input elevation unmodified. 0.042 2011-08-07 T. R. Wyant In the Astro::Coord::ECI maidenhead() method: * Document the fact that, when used as a mutator, it sets the position of the center of the square; * Modify the accessor to try to minimize truncation error. Added t/eci_maidenhead.t. 0.041 2011-07-25 T. R. Wyant Re-fix longitude out-of-range warning in Astro::Coord::ECI::Moon. Fix problem with time specification in eg/sh_script when Date::Manip is not installed. Add attribute 'pass_variant' to Astro::Coord::ECI::TLE. This tweaks the output of the pass() method, and can be set to the bitwise 'or' (a.k.a. '|') of the following exported values: * PASS_VARIANT_NONE - No tweaks. * PASS_VARIANT_VISIBLE_EVENTS - Remove from the output all pass events which were not visible. Ignored if the 'visible' attribute is false. * PASS_VARIANT_FAKE_MAX - Create a 'max' event representing the largest visible elevation if the absolute max was filtered out by PASS_VARIANT_VISIBLE_EVENTS. * PASS_VARIANT_START_END - Report the first and last pass events as PASS_EVENT_START and PASS_EVENT_END. These are the same as PASS_EVENT_RISE and PASS_EVENT_SET unless the 'visible' attribute is true and PASS_VARIANT_VISIBLE_EVENTS is asserted. Minor optimization to the pass() method: the changes of 0.039_01 through 0.039_05 left the appulse calculation before the point at which provisional passes were accepted or rejected. This has been moved below that point. New example script, eg/xml that makes use of the 'pass_variant' attribute, and generates XML from pass data using XML::Writer. 0.040 2011-07-06 T. R. Wyant Tried to make the documentation of the Astro::Coord::ECI::TLE lazy_pass_position clearer. Unconditionally set lazy_pass_position in the satpass script, since it recomputes position anyway. Added a few words to the OVERVIEW about how to get results more like those of the Heavens Above web site. Fix yet more problems in Astro::Coord::ECI::TLE->pass(): * Do not report passes which ended before the prediction interval started. * Rework the implementation of the 'interval' attribute to be (hopefully!) more efficient, and to fix incorrectly-reported illuminations. * Fix incorrect rise (and sometimes max) times when the pass is in progress when the prediction interval starts and the 'visible' attribute is false. The previous fix only worked if the 'visible' attribute was true. Add Astro::Coord::ECI::TLE attribute 'lazy_pass_position', to give the pass() method permission not to calculate and report event position if the event's time can be calculated without calculating position. The satpass script's 'verbose' setting now works as advertised. Re-fix the time-zone-dependant test failures in t/tle_flare.t. Fix more problems in Astro::Coord::ECI::TLE->pass(): * Fix detection and calculation of events of visible passes which begin during the day, or any pass in progress at the beginning of the computation interval. Have Astro::Coord::ECI::TLE->parse() throw a warning if it can not understand the --effective date, and record the effective date as undef. Also allow --effective dates without a fractional part of the second. Add more tests to try to capture all these changes. Fix various problems in Astro::Coord::ECI::TLE->pass(), also brought to my attention by Jaap Meijers: * Incorrect time of maximum elevation when only one of the original one-minute samples is above the horizon. * Sporadic detection of passes which spend less than a minute above the horizon. * Potentially, sporadic detection of passes which spend less than a minute illuminated before daylight occurs. I have no examples of this, though. Add tests for Astro::Coord::ECI::TLE->pass(). More are needed. Make the Astro::Coord::ECI::TLE pass() method more lenient when screening for passes in which the satellite is illuminated. Thanks to Jaap Meijers for bringing this to my attention. 0.039 2011-04-29 T. R. Wyant Silence warnings about out-of-range longitude which are sometimes generated when computing the position of the Moon. Added -dump-headers command line option to eg/passes. 0.038 2011-04-14 T. R. Wyant Updated code that uses the optional Astro::SpaceTrack module to require version 0.052 wherever the Space Track web site is (or may be) accessed. Removed calls to _INSTANCE in little-used code in bin/satpass. It must be little-used, since it hasn't been imported from Params::Util since version 0.033 dated 17-Sep-2010. Fix to zone attribute code in bin/satpass, so that it can be cleared once set. 0.037 2011-04-04 T. R. Wyant Added a zone attribute to Astro::Coord::ECI::TLE::Iridium, so that it could properly distinguish between -am and -pm flares somewhere other than in the local zone. Thanks to CPAN Testers for finding this consequence of publishing a t/iridium.t that everyone can run. 0.036 2011-04-02 T. R. Wyant t/iridium.t no longer requires any extra data for its execution. The satpass 'status iridium' command, which has been deprecated for quite a while, now issues a warning the first time it is issued. See the satpass documentation for the the schedule for its removal. Document Astro::Coord::ECI::TLE::Iridium max_mirror_angle attribute. Correct export tag documentation in Astro::Coord::ECI::TLE (from ':constant' to ':constants'). Correct the attribute() method on Astro::Coord::ECI, Astro::Coord::ECI::TLE, and Astro::Coord::ECI::TLE::Iridium. Formerly it was returning false for some extant attributes. 0.035 2011-03-03 T. R. Wyant Removed the rightascension attribute in favor of the ascendingnode attribute. This is the last step in its deprecation. Update the canned Iridium statuses in Astro::Coord::ECI::TLE for the taking-out-of-service of Iridium 23. Following Kelso, I have marked it spare, rather than failed. 0.034 2010-12-06 T. R. Wyant Make code for Astro::Coord::ECI zero-argument ecliptic() less cute also, to try to forestall problems. Update canned Iridium statuses in Astro::Coord::ECI::TLE, to cover the replacement of Iridium 23 (24906) with Iridium 11 (25578) about November 3 2010. Update and re-enable xt/author/iridium_status.t. Try to avoid panic in Astro::Coord::ECI zero-argument geocentric() under at least one version by using less-cute code to compute the value. The problem could be reproduced using OID 25591 epoch 30-Nov-2009 05:49:13 (which was over a year old at the time of testing). This release has known failures in xt/author/iridium_status.t. 0.033 2010-09-17 T. R. Wyant Fix glitch in Astro::Coord::ECI::TLE::Iridium flare() where the maximum magnitude logic was being called when a flare was not possible. Add t/sgp4-ver.tle to the distribution, instead of asking people to download it. Thanks to Dr. T. S. Kelso. Add attribute rcs (radar cross-section) to Astro::Coord::ECI::TLE. That class' parse() method will populate the rcs attribute if it finds --rcs number on the name line of a NASA-format TLE. Require version 5.64 of Exporter, so I don't have to juggle export tags for the benefit of early Perls. Drop dependency on Params::Util. Move author tests from xt/ to xt/author/. Make sure POD links specify text. Make minimum Perl version 5.6.2, since that is the lowest version I have a prayer of supporting. 0.032 2010-07-03 T. R. Wyant Have Astro::Coord::ECI::TLE complain every time the rightascension attribute is accessed. This is being deprecated in favor of the ascendingnode attribute. Elimination is scheduled for the first release in 2011. Consolidate prerequisites into inc/Astro/Coord/ECI/Meta.pm. Don't require Module::Build for configuration when building a distribution. This is controlled by environment variable MAKING_MODULE_DISTRIBUTION. Document that Astro::Coord::ECI::TLE::Iridium will probably not work for Iridium Next satellites, to be launched starting about 2015. Move acknowledgment of Goran Gasparovic from bin/satpass to lib/Astro/Coord/ECI.pm, since that's where the code is and where the acknowledgment should have been all along, and so it does not get lost when bin/satpass is superseded by App::Satpass2. Fix fatal error in satpass when tilde-expanding a non-existent user name. It's still an error, just not fatal. Tweak the documentation of Astro::Coord::ECI::TLE->is_valid_model(), to make it clearer why it was provided, and make it obvious that it can be called as a static method. Fix bug in precession of equatorial coordinates, which would cause an error if no observing station was passed to the subroutine. Add Astro::Coord::ECI::TLE method body_type(), which computes the type of the body from the common name using an algorithm similar to the one documented on Space Track's Satellite Box Score page. Weaken recommendation of Time::y2038 when run under Perl 5.12 and above, since I really don't think it's needed. 0.031 2010-05-06 T. R. Wyant Add the maidenhead() method to Astro::Coord::ECI, to get or set geodetic position in the Maidenhead Locator System. Update install instructions in README to include cpan, cpanp, or ppi as appropriate. Add example script eg/passes to download TLEs and predict passes in one fell swoop. Change the output in the Astro::Coord::ECI::Sun example to UT, and add a note why. Thanks to Richard Hardwick for raising this issue. 0.030 2010-02-26 T. R. Wyant Update copyright in README to 2010. Consolidate all optional module logic, to eliminate duplicate code between Makefile.PL and Build.PL, and so the messages all have the same 'look and feel.' Dropped XML::Parser from the list, since it is no longer used directly by any supported code. Add the Heavens Above web site to Astro::Coord::ECI's 'SEE ALSO'. Have the satpass script look in $ENV{USERPROFILE} for the initialization file, in addition to all the other possibilities. Use explicit tolerances for fractional results in the Julian date conversion tests in t/basic.t. This is for Strawberry Perl under ReactOS 0.3.11, which seems to have a case of the .999999s. Trap possible exception from gmtime when generating the sgp4r 'mean eccentricity < 0 or >= 1' error in Astro::Coord::ECI::TLE. 0.029 2010-02-04 T. R. Wyant Date::Manip and Time::y2038 are no longer 'recommended' but 'optional'. This means not telling the tool chain about them, but doing custom checks, and custom, gentler messages about why you might (or might not!) want these modules. Centralize the decision about what time routines to use in Astro::Coord::ECI::Utils, and have it export to the other modules, the tests, the 'satpass' script, and the example scripts. Rewrite t/parse_date.t so that it no longer needs Time::y2038. Instead, it uses precomputed times, which it offsets for the target system's epoch when it runs. The above was done in an attempt to clarify the role of the optional modules, and cases where they might not be desirable. Thanks to Christopher Sylvain for identifying the problems and working with me on their solution. Rewrite the time portions Astro::Coord::ECI::OVERVIEW to better reflect the current state of the time handling. Plus, retitle it so that hopefully it will actually appear in the distribution. 0.028 2010-01-11 T. R. Wyant Fix bug introduced in 0.027, in which the Astro::Coord::ECI::TLE pass() method failed to include the {appulse} data when an appulse was found. 0.027 2010-01-08 T. R. Wyant Correct (I hope!) the computation of illumination changes in the Astro::Coord::ECI::TLE pass() method. The original could miss them in the first or last minute of the pass. Add exportable constants SPEED_OF_LIGHT (in kilometers per second) and SECS_PER_SIDERIAL_DAY to Astro::Coord::ECI::Utils. Add attribute frequency (in Hertz) to Astro::Coord::ECI. Have the Astro::Coord::ECI->azel() method return Doppler shift as the seventh element of the returned array if velocities are available AND the frequency attribute is set. Attempt to correct the transverse velocities calculated by Astro::Coord::ECI->azel() for the rotation of the coordinate system. I am not convinced the corrections (or indeed the transverse velocities themselves) are correct. The first time the Astro::Coord::ECI::TLE rightascension attribute is used in a given script, issue a warning that it is deprecated. Update copyrights to 2010. The Astro::Coord::ECI azel() method now returns velocities if these are available. The transverse velocities (azimuthal and elevational) are NOT corrected for the Coriolis effect. Added Astro::Nova to the Astro::Coord::ECI 'SEE ALSO' section. Date::Manip is no longer required. If it is not available, the 'satpass' script will use a home-grown pseudo-ISO-8601 parser instead. The t/parse_time.t test was added to make sure this works as advertized. Have 'authortest' run the normal tests without any of the optional modules. This requires either Test::Without::Module or Devel::Hide. If neither is available, 'authortest' will not attempt these tests. Remove the last vestiges of the $ENV{DEVELOPER_TEST} machinery. Rewrote xt/manifest.t to use Test::More. All modules' versions set to 0.026_01. In the future all modules in a given release will have the same version number. Convert all modules to the CPAN-recommended license. Author tests no longer rely on environment variable DEVELOPER_TEST. Instead, they are executed by ./Build authortest. This means author tests are no longer available via the ExtUtils::MakeMaker build. Astro::Coord::ECI: * Modify correct_for_refraction() to work down to (and a bit below) the horizon setting if that is negative. Thanks to Vidar Tyldum Hansen of Kongsberg Satellite Services AS for identifying the need for this, and working with me on it. satpass: * Add the 'refraction' parameter, to allow the user to turn off atmospheric refraction (it is on by default). 0.026 2009-10-02 T. R. Wyant Astro::Coord::ECI 0.026: * Default the {inertial} attribute appropriately. * Add the next_azimuth() method to compute when a body passes the given azimuth. Thanks to Lixus Zoran for suggesting this on the geo-perl mailing list. Astro::Coord::ECI::Moon 0.007: * Default the {inertial} attribute appropriately. Astro::Coord::ECI::Sun 0.010: * Default the {inertial} attribute appropriately. Astro::Coord::ECI::TLE 0.020: * Default the {inertial} attribute appropriately. * Deprecate the {rightascension} attribute in favor of the {ascendingnode} attribute. See the POD for the deprecation plan. 0.025 2009-09-07 T. R. Wyant Astro::Coord::ECI 0.035: * Correct documentation of matrix math in azel() method. Astro::Coord::ECI::TLE 0.019: * Add and document validate() method. * Make max_effective_date() ignore undef arguments. * More verbose message for bad eccentricity in sgp4r. * Correct description of synopsis to match what it actually does. Astro::Coord::ECI::TLE::Set 0.008: * Add and document validate() method. bin/satpass 0.024: * Add validate command. Build.PL: * Remove need for Module::Build for configuration, since I also supply Makefile.PL. 0.024 2009-08-18 T. R. Wyant General: * Require Test::More 0.40 for testing. Astro::Coord::ECI 0.024: * Increment version. No other changes. Astro::Coord::ECI::TLE 0.018: * Add methods semiminor(), apoapsis(), apogee(), periapsis(), and perigee. * Add 'effective' attribute, with logic in the parse() method to parse Astro::SpaceTrack --effective date out of line 0 of the TLE. Thanks to Thomas Wehr for reporting the problem this addresses, and T. S. Kelso for explaining what was needed to fix it. * Add method max_effective_date() to figure out what date to use, since things are becoming rather complicated. * Add method tle_verbose() to centralize the verbose output of TLE. Astro::Coord::ECI::TLE::Set 0.007: * Add method max_effective_date() to do the right thing when there is more than one TLE to consider. 0.023 2009-03-09 T. R. Wyant General: * Test t/tle_exception.t is no longer a developer test, but it will be skipped unless the user has Time::y2038. Astro::Coord::ECI 0.023: * Add method equatorial_unreduced(), for those who are only interested in range and velocity. * Attempt to straighten out velocities when transforming among ECEF, ECI, and equatorial. No tests yet, though, so I have no idea if it is right. Note that as a consequence of this change it is possible to have an object without a velocity, since inertial objects no longer default to 0 velocity. Astro::Coord::ECI::TLE 0.017: * Set Iridium 91 in service in canned status, reflecting updates by Rod Sladen and T. S. Kelso. This is the real reason for the release; otherwise I would have sat on it until I had velocity tests. 0.022 2009-02-15 T. R. Wyant General: * Make new test t/tle_exception.t a developer test until I can figure out why it only runs on my configuration. 0.021 2009-02-13 T. R. Wyant General: * Make Time::y2038 recommended rather than required, since ActivePerl has problems with that module. We use it if available, otherwise we fall back to the core modules (and Time::Local if needed). * Add eg/closest and eg/positions, showing calculation of the closest approach to a given point, and standalone calculation of the positions of all bodies at a given time. * Correct '## no critic' in various places. Astro::Coord::ECI 0.021: * Trap any exceptions encountered when setting the time, set the time to undef (since otherwise we're left in an inconsistent state) and re-raise the exception. Astro::Coord::ECI::TLE 0.016: * Add OID number to exceptions related to orbital elements. * Correct error messages involving using a near-earth model on a deep-space satellite or vice versa. * Document the units of the model results (km or km/sec). * Update canned Iridium status for the loss of Iridium 33 in a collision with Cosmos 2251. Astro::Coord::ECI::TLE::Set 0.006: * Tell carp not to report Astro::Coord::ECI (and friends) errors as originating in Astro::Coord::ECI::TLE::Set. bin/satpass 0.021: * Add gmt parameter which, if true, causes time output to be GMT. * Trap Astro::Coord::ECI::TLE modeling exceptions in the 'flare', 'pass', and 'position' commands, so that the whole command does not abort when this happens. SIGINT still aborts the whole command. Add -quiet option to supress error output. * Mark geocode_ca as unsupported and probably not working, since they have started requiring registration for use of their free port. Build.PL: * Change check for Astro::SIMBAD::Query to Astro::SIMBAD::Client Makefile.PL: * Change check for Astro::SIMBAD::Query to Astro::SIMBAD::Client 0.020 2009-01-09 T. R. Wyant General: * Add Time::y2038 as prerequisite, and use in place of Time::Local and CORE gmtime and localtime functions. * Add Params::Util 0.25 as prerequisite. * Add Astro/Coord/ECI/Overview.pod to try to give a "big picture". * Eliminate function calls to UNIVERSAL::can and UNIVERSAL::isa in favor of Params::Util::_INSTANCE(), ::_CLASSISA(), or Astro::Coord::ECI::Utils::embodies(). * Update copyright date to 2009. * Restructure Build.PL and Makefile.PL to better adapt to the installed version. * Distribute t/critic.t, t/executable.t, t/iridium_status.t, t/manifest.t, and t/perlcriticrc but do not run them unless environment variable DEVELOPER_TEST is set. * Bring code up to perlcritic --stern with exceptions contained in t/perlcriticrc. This was not done to bin/satpass, since I plan to retire it. Astro::Coord::ECI 0.020: * Use represents() rather than isa() on the argument (if any) to the equatorial(), next_elevation(), and next_meridian() methods, to allow Astro::Coord::ECI::TLE::Set objects. Astro::Coord::ECI::Moon 0.006: * Make case of 'Moon' in next_quarter() output consistent. * Append 'Moon' to first and last quarter description. * Add method next_quarter_hash(), which wraps next_quarter() and returns a hash similar to the one returned by the Astro::Coord::ECI::TLE->pass() method. * Add method almanac_hash(), which wraps almanac() in a manner similar to next_quarter_hash(). Astro::Coord::ECI::Star 0.006: * Add method almanac_hash(), which wraps almanac() and returns a hash similar to the one returned by the Astro::Coord::ECI::TLE->pass() method. Astro::Coord::ECI::Sun 0.008: * Add method next_quarter_hash(), which wraps next_quarter() and returns a hash similar to the one returned by the Astro::Coord::ECI::TLE->pass() method. * Add method almanac_hash(), which wraps almanac() in a manner similar to next_quarter_hash(). Astro::Coord::ECI::TLE::0.015: * Add ability to manufacture the 'tle' attribute when the object was not generated by the parse() method. * Supress object dump when environment variable DEVELOPER_TEST is set. * Correct SYNOPSIS to include $tle->set(backdate=>0) with comments. * Document models sgp4r and model4r under the 'model' attribute, and add them to the DESCRIPTION section of the POD. Astro::Coord::ECI::TLE::Iridium 0.007: * Document attributes am, day, extinction, and pm. Astro::Coord::ECI::TLE::Set 0.005: * Add explicit represent() method. * Add optional options hash as first argument of aggregate(). The only option is {select => $time} which if true causes select($time) to be called on any Astro::Coord::ECI::TLE::Set objecgts created. Astro::Coord::ECI::TLE::Utils 0.010: * Add subroutine embodies($obj, $class) as a safe way to call represents() without throwing an exception if $obj is not blessed. bin/satpass 0.020: * Use Geo::WebService::Elevation::USGS for height(). * Drop support for SIMBAD 3, since U. Strasbourg did a while back. * Trap SOAP errors and correct result hash expansion in height(). * Eliminate function calls to UNIVERSAL::can and UNIVERSAL::isa. * Correct (reverse) documented meaning of flare() options -am, -day, and -pm. * Document models sgp4r and model4r under the 'model' paramter. * Revise 'NOTES' section to cover plans for App::Satpass2, and changes for this release. 0.019 2008-10-27 T. R. Wyant Astro::Coord::ECI 0.019: * Truncate SYNOPSIS code. * Range-check angular position input, with warning if out of range: - Latitude: - PI/2 <= latitude <= PI/2; - Longitude: - 2*PI <= longitude < 2*PI (Jean Meeus' examples sometimes use examples outside the conventional range); - Right ascension: 0 <= right ascension < 2*PI Astro::Coord::ECI::Moon 0.005: * Clarify and expand SYNOPSIS code. Astro::Coord::ECI::Star 0.005: * Correct and expand SYNOPSIS code. * Normalize computed right ascension to range 0 to 2 PI. Astro::Coord::ECI::Sun 0.007: * Clarify and expand SYNOPSIS code. Astro::Coord::ECI::TLE 0.014: * Clarify and expand SYNOPSIS code. Astro::Coord::ECI::TLE::Iridium 0.006: * Correct SYNOPSIS code. * Document problems with magnitude estimate when the Sun is close to the horizon as seen from the satellite. Astro::Coord::ECI::TLE::Set 0.004: * Clarify and complete SYNOPSIS code. 0.018 2008-10-03 T. R. Wyant Astro::Coord::ECI 0.018: * Update version number and copyright date. No other changes. Astro::Coord::ECI::TLE 0.013: * Add semimajor(), to calculate and return the semimajor axis of the orbit. * Update Iridium status: mark Iridium 28 (OID 24948) failed, and Iridium 95 (OID 27375) as in service (was spare). bin/satpass 0.018: * Under Mac OS X, use Mac::Pasteboard for clipboard operations if available; supress pbcopy warning when run as cron job. * Fix 'height' query to track changes in USGS' elevation web service. t/tle_sgp4r.t: * Correct the code that extracts the needed TLEs from the downloaded zip file. 0.017 2007-12-30 T. R. Wyant Astro::Coord::ECI 0.017: * Fall back to homegrown (and un-general, and insufficiently tested) code if Storable::dclone not available. Astro::Coord::ECI::TLE 0.012: * Correct behavior when Scalar::Util::dualvar not present. Astro::Coord::ECI::TLE::Iridium 0.005: * Use max() and min() from Astro::Coord::ECI::Utils. Astro::Coord::ECI::Utils 0.009: * Added looks_like_number(), max(), min(), defaulting to the Scalar::Util or List::Util implementations if possible, but providing our own if not. * Clarify load_module() documentation. bin/satpass 0.017: * Use looks_like_number() and max() from Astro::Coord::ECI::Utils. * Recode _load_module to use Astro::Coord::ECI::Utils::load_module. * Fix clipboard code to fail gracefully if Scalar::Util::weaken is unavailable. t/{moon,sun}.t: * Skip singleton test if Scalar::Util::refaddr not available. t/pod_coverage.t: * Correct also_private setting to make it skip all-uppercase+numeric (blind fix since mine seems to skip constants anyway, which is what I'm really trying to do). t/tle.t: * Use max() from Astro::Coord::ECI::Utils. t/pod_spelling.t 0.010: * Add stop words 'max' and 'min'. bin/satpass 0.017: * Supress '"our" variable $clipboard_unavailable masks earlier declaration ...' under 5.10.0. 0.016 2007-12-28 T. R. Wyant Astro::Coord::ECI 0.016: * Increment version. No other changes. Astro::Coord::ECI::TLE 0.011: * Use PI-related constants from Astro::Coord::ECI::Utils. * pass() no longer throws 'end before beginning' error if caused by setting backdate false; instead returns empty list of passes. Astro::Coord::ECI::TLE::Iridium 0.004: * flare() no longer throws 'end before beginning' error if caused by setting backdate false; instead returns empty list of passes. * Add model 'sgp4r', based on 'Revisiting Spacetrack Report #3', and equivalent metamodel 'model4r.' * Make metamodel 'model' execute sgp4r. * Have 'period' take into account which model is being used. Build.PL: * Prompt for installation of 'satpass' script, defaulting to 'n'. Makefile.PL: * Fix license support check to work with developer versions of ExtUtils::MakeMaker. * Prompt for installation of 'satpass' script, defaulting to 'n'. bin/satpass 0.016: * Document major changes in classes. No other changes. eg/tle_period.t: * Pseudo-test to compare the various period calculations. eg/README: * Update to add eg/tle_period.t t/{eci,moon,star,sun}.t: * Remove dependency on Math::Trig. * Prefer Astro::Coord::ECI::Utils over local definitions of constants. t/iridium.t: * Clarify (I hope!) how to run the Iridium tests. t/tle_sgp4r.t: * New test for model sgp4r. TLEs are not included in the kit, but are downloaded if needed. t/sgp4r.out: * Comparison data for tle_sgp4r.t. Renamed from tforver.out in the 'Revisiting Spacetrack Report #3' download. t/pod.t: * Remove unused variable t/pod_coverage.t: * Remove unused variable 0.015 2007-11-15 T. R. Wyant Astro::Coord::ECI 0.015: * Bump version number. No other changes. bin/satpass 0.015: * Document pod coverage test change, intent to and plans for implementing "Revisiting Spacetrack Report #3". * Bump version. t/pod_coverage.t: * Specify all-caps routines as private, since some testers are getting failures on 'use constant' declarations. I don't get these, so the change is kind of blind. 0.014 2007-11-13 Astro::Coord::ECI 0.014: * Add equinox_dynamical attribute; precess() now uses this as start point and leaves the time alone. It is also used when going from ECI to ECEF, and set to the current time when going from ECEF to ECI. * Add global $EQUINOX_TOLERANCE to determine minimum precession when converting from ECI to ECEF. * Add method equinox_dynamical for performance. * Document dynamical and universal times. * Add method precess_dynamical() to precess to the given dynamical time. The precess() method simply converts its argument to dynamical and delegates to this. Astro::Coord::ECI::Moon 0.004: * Have model set equinox_dynamical attribute to modeled dynamical time. Astro::Coord::ECI::Star 0.004: * Set equinox_dynamical attribute before precessing to current equinox. * Precess coordinates at end of time_set(), not in middle. Astro::Coord::ECI::Sun 0.006: * Have model set equinox_dynamical attribute to modeled dynamical time. Astro::Coord::ECI::TLE 0.010: * Add backdate attribute (default: true) to control whether pass() uses elements before their epoch. * Use the alias() mechanism for special-case settings of the illum attribute. * Have models set equinox_dynamical to the dynamical epoch. Astro::Coord::ECI::TLE::Iridium 0.003: * Have backdate attribute control whether flare() uses elements before their epoch. Astro::Coord::ECI::TLE::Set 0.003: * Minor documentation tweaks and POD fixes. Astro::Coord::ECI::Utils 0.008: * Add constant JD_OF_EPOCH, globals $DATEFORMAT and $JD_GREGORIAN, and subroutines date2jd, date2epoch, epoch2datetime, jd2date, jd2datetime. * Add subroutine load_module and centralize all on-the-fly loading here, for support of .pmc modules. bin/satpass 0.014: * Add 'echo' and 'times' commands. * Add 'backdate' parameter, propagate to pass() and flare(). * Add 'desired_equinox' parameter, use it when displaying inertial coordinates (only equatorial, at the moment). * Allow pseudo-redirection of command output into a pipe. 0.013 2007-03-02 T. R. Wyant Astro::Coord::ECI 0.013: * No code changes, but updated version to be visible to CPAN 'r'. Astro::Coord::ECI::TLE 0.009: * Updated canned Iridium status table for failure of Iridium 36 and its replacement by Iridium 97. Astro::Coord::ECI::TLE::Iridium 0.002: * Fixed occasional borderline-case spurious flare prediction. bin/satpass 0.013: * Added -version command option, to display preamble and exit. * Wrap probe for clipboard helpers in eval{}. Among other things, this allows the script to run in taint mode. * Add -choose option to list(). * Allow extra arguments to status show, to do selective status display. t/moon.t: * Fixed cosmetic undefined value error when Scalar::Util does not implement refaddr(). t/sun.t: * Fixed cosmetic undefined value error when Scalar::Util does not implement refaddr(). 0.012 2007-01-09 T. R. Wyant ECI.pm 0.012: * Localized $Data::Dumper::Terse * Fixed divide-by-zero in azel() when the points coincide. * Convert angle() to use law of haversines rather than law of cosines, for better performance on small angles. ECI/Sun.pm 0.005: * Add magnitude() method. ECI/TLE.pm 0.008: * Add {body} and {station} to hash returned by pass(). * Add support for reblessing to Astro::Coord::ECI::TLE::Iridium if appropriate. This includes rebless(), before_reblessing(), after_reblessing(), alias(), can_flare(), status(), and the {reblessable} attribute. ECI/TLE/Iridium.pm 0.001: * Initial release. ECI/Utils.pm 0.007: * Confess on invalid acos() argument. * Add find_first_true() to support finding Iridium flares. bin/satpass 0.012: * If a source file ends with a continued line, warn and abandon the line. * Set the time on the appulsing body before obtaining its coordinates. * Fix error in end time parser in position(). * Throw error if doing 'sky lookup' on a body that is already in the sky. * Have pass() round the displayed time for the appulsing body. * Add flare() to calculate Iridium flares. * Modify position() to report flare potential for Iridium satellites. * Added -choose option to pass(), position(), tle(). * Removed pass_old() and the timing parameter, strongly deprecated in version 0.011. * Added {simbad_version} parameter to select SIMBAD software to use. eg/iridium 0.001: * New example calculating Iridium flares. 0.011 2006-10-26 T. R. Wyant ECI.pm 0.011: * Add horizon attribute. ECI/TLE.pm: * Add pass() method and supporting attributes. bin/satpass: * Add check_version() * Defer loading of optional modules to speed startup. * Rewrite XML parsing to use either XML::Parser or XML::Parser::Lite, with XML::Parser being preferred. * Fix fatal error when running off the end of the top-level command script. * Support ~user in filenames. * Convert pass() to use Astro::Coord::ECI::TLE->pass(). Old code remains as pass_old(), strongly deprecated. * Use Time::HiRes for timing, if that is available. * Document status of pass_old, 'timing' parameter (strongly deprecated) and the SIMBAD situation. eg/iss: * New example to demonstrate Astro::Coord::ECI::TLE->pass(). 0.010 2006-09-23 T. R. Wyant ECI.pm 0.010: * Check for null arguments on most calls, so we die now rather than later. * Fix undefined value when calling set() with no arguments. ECI/Moon.pm 0.003: * Make singleton object by default. ECI/Sun.pm 0.004: * Make singleton object by default. bin/satpass 0.010: * Add qualifiers -brief, -list, and -delete to macro command. Parameter explicit_macro_delete controls what the macro command does when given a name but no definition. * Make -time work on macros and source commands. * Add ability to abort macros and source scripts on error, controlled by parameter error_out. Build.PL: * Correct add_to_cleanup() call. * Add omitted ECI/Sun.pm. Makefile.PL: * Add explicit PL_FILES => {}, to prevent old versions from trying to execute 'perl Build.PL Build'. 0.009 2006-07-23 T. R. Wyant ECI.pm 0.009: * Add represents() method. ECI/Sun.pm 0.003: * Remove redundant definition of ASTRONOMICAL_UNIT; use AU from Astro::Coord::ECI::Utils ECI/TLE.pm 0.006: * Add is_model_attribute(), is_valid_model(). ECI/TLE/Set.pm 0.002: * Allow Astro::Coord::ECI::TLE::Set objects as arguments of add(). * Take advantage of is_model_attribuite(), is_valid_model(). bin/satpass 0.009: * Fix defaulting of second argument of quarters(). * Allow macros to override core commands. Macros can no longer call themselves, and core commands can be accessed explicitly by the syntax core.command. * Relative times for the second and subsequent arguments of a command are relative to previous time argument of the same command, whether absolute or relative. Build.PL 0.001: * Initial version. 0.008 2006-07-14 T. R. Wyant ECI.pm 0.008: * Support the use of Astro::Coord::ECI::TLE::Set objects in the angle() method. * Add method attribute(). ECI/TLE.pm 0.005: * Add the null model. ECI/TLE/Set.pm 0.001 - New container object. ECI/Utils.pm 0.006: * Add dynamical_delta() method (was private method in ECI.pm). bin/satpass 0.008: * Use Astro::Coord::ECI::TLE::Set objects to represent satellites when we have more than one set of orbital elements. * Add help for Astro::Coord::ECI::TLE::Set. * Add and document 'singleton' parameter. Use it in pass() and position(). * Default end times relative to start times, rather than relative to the last explicit time. * Fix interaction between clipboard functionality and test hook. Thanks to IMACAT for help diagnosing and verifying. * Add acknowledgments. 0.007 2006-07-06 T. R. Wyant ECI.pm: * Optimize, mostly by being smarter about when to clear cached coordinates. * Correct spelling in POD. ECI/Moon.pm: * Change die to confess on programming error. * Correct spelling in POD. ECI/Star.pm: * Correct spelling in POD. ECI/Sun.pm: * Correct spelling in POD. ECI/TLE.pm: * Modify internals for easier cache clearing. * Better documentation of 'mean anomaly'. * Correct spelling in POD. * Trap invalid effective eccentricity in sgp4. The underlying cause of the problem is probably either an invalid TLE or using the TLE past its 'good until' date. ECI/Utils.pm: * Change die to confess on programming error. * Correct spelling in POD. Makefile.PL: * Get rid of wrong-headed attempt to configure optional modules. bin/satpass: * Various documentation corrections. * Correct spelling in POD. * Add store() and retrieve() as interface to Storable. * Centralize tilde expansion, and do it on cd(), load(), retrieve (), source(), store (). * Preprocess -start and -end options of st(), to make dates consistent with the rest of satpass. * Add -initialization_file command option. * Add -optional option on source(). * Add localize(), and macro/source call frames to support this. * Add localize subcommand to st(). * Make 'st show' a synonym for 'st get', and make 'st get' without arguments show all settings. * Add test hooks, and a test to exercise the more arcane functions of the script. * Add -source_layer and -retry_on_zero options to height_us(). * Add a separate height_ca() method that makes use of the above options when delegating to height_us(), in response to anomalous responses to height queries. * Fix problem displaying appulses in pass(). * Make the position() display positions for a range of times. Add -realtime option to position() to display positions in near-real-time. * Add drop(). * Fix formatting of error messages from the local coordinate formatters. * Have position() display epoch and illumination when displaying objects from the observing list. 0.006 2006-06-07 T. R. Wyant ECI.pm: * Cache some calculations for re-use. ECI/Star.pm: * Tweak docs. ECI/Utils.pm: * Add intensity_to_magnitude(), atmospheric_extinction(). bin/satpass: * Correct check for whether location has been set. Old check did not recognize 0 latitude, longitude, or height. * Special-case code to 'unset' tz when it is set to undef or ''. * Make 'position' iterate over time, in real time with -realtime. * Add -time global command option to time execution. * Add 'country' parameter. Break out 'geocode' and 'height' to country-specific versions, and make the original command dispatch based on 'country' parameter or explicit argument. * Allow formatting of local coordinates without range information. * Round pass times to the nearest second (since strftime truncates). * Add 'almanac' command options -horizon, -quarters, -transit, and -twilight to restrict the output. * Make height_us() work with revised USGS SOAP calling sequence. 0.005 2006-04-21 T. R. Wyant ECI.pm: * Add 'inertial' read-only attribute. * Add equatorial coordinates relative to observer. * Fix negative right ascension - should be mod 2 pi. * Tweak docs, including fuller synopsis. bin/satpass: * Add local_coord parameter to determine local coordinate system (azel or equatorial). * Modify pass and position output to use local_coord. TLE.pm: * Tweak synopsis, to show that setting time runs model. 0.004 2006-03-14 T. R. Wyant bin/satpass: * Rewrite command parsing so that we can retain quotes and be POSIXly correct in option processing for the system command. * Give tle command a -verbose qualifier, to produce a formatted listing of the orbital parameters. * Provide HTML =item targets consistent with links. ECI.pm: * Clean up docs. TLE.pm: * Clean up docs, wrap some really long lines. * Replace _fmod2p with mod2pi from Utils module. 0.003 2006-03-10 T. R. Wyant bin/satpass: * Remove all uses of Clipboard, to try to get built under ActiveState's ActivePerl. * Correct version number in Astro::SpaceTrack load. * Accumulate Iridium operational statuses. * Add status command to display satellite operational status. Astro::Coord::ECI: * Increment version, as a lazy way to increment the distribution version. * Tweak documentation. Astro::Coord::ECI::Utils: * Make subclass of Exporter, since ActiveState's build seems to have a problem with 'use Exporter qw{import}' (except under darwin, strangely enough). * Increment version. 0.002 2006-03-02 T. R. Wyant bin/satpass: * Behave better when no Clipboard module. * Do not use Clipboard module under darwin. * Require Astro::SpaceTrack 0.016 (if any). * Default star distance now 10000 parsecs (was 1 parsec). * Add 'sky lookup', using Astro::SIMBAD::Query. * Modified 'sky' listing format to look like 'sky add' commands. Astro::Coord::ECI: * Add NAD83 ellipsoid. Astro::Coord::ECI::Utils: * Corrected documentation. 0.001 2006-02-17 T. R. Wyant Initial release