These are the two top results in my email. https://github.com/poliastro/vallado-software/issues/1 https://github.com/rirze/sgp4-cpp On Wed, Nov 11, 2020, 22:22 John A. Dormer 2 <jad_at_texas.net> wrote: > I actually have some of his code from 2004. This is the archive listing: > > Archive: sgp4c.zip > Length Date Time Name > --------- ---------- ----- ---- > 17293 08-09-2004 14:47 SGP4EXT.CPP > 5760 10-07-2004 09:51 SGP4TEST.CPP > 86783 08-10-2004 09:37 SGP4UNIT.CPP > 2905 08-09-2004 14:47 SGP4EXT.H > 5607 08-10-2004 07:58 SGP4UNIT.H > 13896 07-08-2004 12:56 SGP4-ALL.ELM > 359608 07-22-2004 09:30 SGP4TEST.TXT > 359608 10-07-2004 09:52 SGP4TEST.OUT > --------- ------- > 851460 8 files > > Additionally, I have a "fortran data" file from the same time period: > > Archive: fortran-data.zip > Length Date Time Name > --------- ---------- ----- ---- > 14787 05-17-2000 12:19 NUT85.DAT > 34933 11-01-2000 13:15 NUTATION.DAT > 812 10-06-1997 18:29 ATMOSEXP.DAT > 33521 04-03-2003 09:34 TESTASTF.DAT > 101257 04-03-2003 07:10 TESTASTF.TXT > 15075 04-28-1999 13:59 GEOS1.TXT > 69216 01-19-2000 13:17 SENSOR.TXT > 17254 04-28-1999 14:00 GEOS2.TXT > 15075 04-28-1999 14:00 GEOS5.TXT > 1694 06-17-1999 12:00 GEOS2.IN > 1476 04-22-1999 14:12 GEOS1.IN > 2048 04-22-1999 14:12 GEOS5.IN > 7834 10-06-1999 15:33 SGP4-ALL.ELM > 5282 09-22-1998 10:06 Y2K.ELM > 294 09-27-2001 12:43 16609D.ELM > 183 10-06-1998 09:24 20510.ELM > --------- ------- > 320741 16 files > > Who would this help? Can you link me to "some enterprising folks?" :) > > John > On 11/11/2020 23:35, Chris Kuethe wrote: > > Speaking of web archeology, some enterprising folks have attempted to > archive all the old versions of vallado's code, with an eye to > reconstructing commit histories between versions of the public code drops. > > On Wed, Nov 11, 2020, 20:15 John A. Dormer 2 <jad_at_texas.net> wrote: > >> I have similar concerns. When I visited the >> http://www.astrodynamicstandards.org/ site, the banner says that "The >> Public Astrodynamic Algorithm Distribution Site is no longer available." >> While the documentation for the APIs appears to be included with the >> distribution package, it's now a bit more closed than it used to be. >> >> The site stopped direct distribution sometime between February and April >> of 2018, so it's been like this for a while. I use >> https://web.archive.org/ to figure this out. >> >> There are other Federal projects which publish tools via Github, but I >> suppose there's some constructive sensitivity to well-understood >> algorithms being published now. I disagree with the current tack which >> Space-Track seems to have taken. >> >> John >> >> On 11/11/2020 21:18, Chris Kuethe via Seesat-l wrote: >> > This is their binary build for x86 and x86_64 windows and Linux. No >> source >> > code for the propagator, but it does have bindings and examples for >> various >> > languages. >> > >> > I'm going to try to avoid using it in my workflows because I don't want >> to >> > be "contaminated" by export controlled technical information, nor to >> become >> > dependent on binaries that I can't fix. At least with source code I can >> try >> > fix it when an OS upgrade breaks stuff (I'm lookin' at you Ubuntu 20.10 >> and >> > passivedns...) >> > >> > It is awfully tempting to try side by side test between public libraries >> > (vallado, python-sgp4, etc.) and space-track. >> > >> > >> > On Wed, Nov 11, 2020, 15:15 Kevin Fetter via Seesat-l < >> seesat-l_at_satobs.org> >> > wrote: >> > >> >> Version 8.0 of the SGP4 propagator is now available for download here: >> >> https://www.space-track.org/documentation#/sgp4 Space Operations >> Command >> >> highly recommends that you update your software to the latest version. >> >> Please check the release notes in the Documentation folder of the >> package >> >> for details. >> >> _______________________________________________ >> >> Seesat-l mailing list >> >> http://mailman.satobs.org/mailman/listinfo/seesat-l >> >> >> > _______________________________________________ >> > Seesat-l mailing list >> > http://mailman.satobs.org/mailman/listinfo/seesat-l >> > _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu Nov 12 2020 - 00:42:13 UTC
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