Re: notice on space track site about SGP4.

From: Chris Kuethe via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 11 Nov 2020 21:35:18 -0800
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.
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Received on Wed Nov 11 2020 - 23:36:32 UTC

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