Re: Space-Track numbers wrongly again?

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 31 Jul 2021 10:50:46 +0200
Thank you Bob.

This clears things up.

Leo

Op za 31 jul. 2021 om 10:18 schreef Bob Christy <bob_at_zarya.info>:
>
> Space-Track was tardy in publishing element sets for the 2021-067 launch.
>
> It was of Tianhui 1-04 and it occurred about two hours before Electron lifted off on July 29:
> https://www.zarya.info/Diaries/Launches/Launches.php?year=2021#067
>
> Three catalogue numbers were reserved for it: 49049-49051. Thirty hours elapsed before element sets were issued, but only for the satellite. The rocket body was de-orbited and not catalogued, and there is no debris listed.
>
> In contrast, elsets for the Electron objects appeared as 2021-068 about six hours after launch.
>
> Space-Track's data output has been a little slow recently. Nauka's manoeuvres took many hours to show up and the first set for Tianlian 1-05 (2021-063A) appeared a full ten days after launch. Its transfer orbit was never published although equivalent sets are available for its rocket.
>
> There was genuine 'phantom' catalogue entry earlier in July when objects from the 2021-060 launch were tagged as '2021-061' for nearly one week. It caused some head scratching on 'Twitter' and 'Facebook'.
>
> Hopefully this helps.
>
> Robert Christy
>
> On 31 Jul 2021, at 07:13, Leo Barhorst via Seesat-l <seesat-l_at_satobs.org> wrote:
>
> ´╗┐The last entries in Satcat probably show a new wrong numbering.
> 49044 49045 2021 066 A B Nauka and r/b
> 49046-49048 fragments from 3 different launches
> 49049-49051 noy yet assigned
> 49052-49054 2021 068 A-C 3 objects from Electron launch
>
> Will 49049-49051 be 2021-67 A-C?
> I'm not aware of a launch between Nauka and Electron.
>
> Electron launch  should be 2021 67 A-C.
> Looking at the orbital data objects A and B will probably be interchanged.
> A is in 241x610 km orbit and most likely the electron 2nd stage.
> B is in 598x610 km orbit and would be the Monolith satellite
> C is in 344x595 km orbit and can be the Kick stage.
>
> Hopefully this will be cleared up soon.
>
> Greetings
> Leo Barhorst
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Received on Sat Jul 31 2021 - 03:51:44 UTC

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