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 > <mailto:jad_at_texas.net>> wrote: > > I have similar concerns. When I visited the > http://www.astrodynamicstandards.org/ > <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/ <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 <mailto: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 > <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 > <http://mailman.satobs.org/mailman/listinfo/seesat-l> > >> > > _______________________________________________ > > Seesat-l mailing list > > http://mailman.satobs.org/mailman/listinfo/seesat-l > <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 - 00:23:28 UTC
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