Re: fast object from yesterday = 31116/07-11b or cz3 rb

From: Alain Figer via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 8 Jun 2017 18:40:58 +0200
Hello Tristan,

I photographed the Beidou M1 Rocket 2007-011-B on 6 JUN 2017 and derived a
photometric period of about 12 seconds.

This object has an interesting rotation period history, registered at :

http://astroguard.ru/satellites/

Here are my own recent determinations :
2007-011-B . file B . 05 FEV 2016 . cli 63.3 s . Beidou M1 Rocket
2007-011-B . file B . 30 NOV 2016 . cli 76.1 s .
2007-011-B . file M . 06 JUN 2017 . cli 12 s .


More info about my observation on 6 JUN 2017 at :
https://www.flickr.com/groups/satellites_artificiels/discuss/72157659613697658/72157681866213143

Regards
Alain

48.67 N ; 2.13 E ; 170m a.s.l.


2017-06-05 11:35 GMT+02:00 Tristan Cools via Seesat-l <seesat-l_at_satobs.org>:

> Thanks Patrick for the identification of the object I observed on June 4
> 2017.
> There was some confusion with the Falcon objects but time and angular
> velocity didn't correspond with my observation.
>
> The CZ3 third stage 31116/07011B) is very spectacular, bright and very
> fast.  Calsky predict it to decay around July 31 2017 but with an accuracy
> of about 11 days...
>
> I observed it near perigee with a range of only 157km.(and comming from an
> apogee of 9368km.)
>
> If you got a chance to observe it, I would certainly do it.  It is also a
> tumbling object(near perigee) with very bright maxima(at least mag 0) and a
> period of maybe 3s.
>
> BTW, the first element sets issued by Spacetrack of the Falcon objects were
> mixed up with each other...(cannot publish them here due to policy)
>
> greetings,
> Tristan Cools
> BWGS
>
> Quote:
> "At 21:19 another fast moving object
> from W->E and flashing from mag 0
> to inv with about 3s was passing by
> through UMa.
> I believe this was the Falcon rocket from
> the recently launched Dragon capsule."
>
> Could this object have been 2007-011B
> (a Changzheng-3A upper stage)?
> http://www.heavens-above.com/PassSummary.aspx?satid=31116
>
> Greetings,
> Patrick
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Received on Thu Jun 08 2017 - 11:41:48 UTC

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