Re: Satellite Collision

JSpOC says we were lucky this time (though the sats are still not named):


The close approach predicted at 21:53:00 UTC on 7 Jan 2017 has passed
without incident. The JSpOC has confirmed that both satellites are being
tracked as single objects, indicating that no collision has occurred.

On 7 Jan 2017 14:38, "Till Potinius via Seesat-l" <seesat-l_at_satobs.org>
wrote:

> Celestrak lists this one:
>
>
> OPS 4412 (00801) - NOAA 16 DEB (41428 with 1km Min Range at 2017 Jan 07
> 21:53:54.734.
>
>
> This fits the data, but not the entire statement from JSpOC:
> The JSpOC has identified a close approach between two non-maneuverable
> satellites in a sun-synchronous orbit (approximately 800km altitude) with a
> time of closest approach at 21:53:00 UTC (16:53 EST) on 7 January 2017. The
> probability of collision has been predicted as high as 44%. Affected
> operators have been notified.
>
>
> OPS 4412 is definitely a non-maneuverable satellite, the other piece is
> just some space debris.
> However, the „affected operators“ could be the operators of the
> approaching satellites or operators of other satellites in similar orbits.
>
> 1km minimum range in TLE can result in such a probability with the much
> better data at JSpOC.
>
>
> Till
>
>
> > Am 07.01.2017 um 12:13 schrieb Kevin Fetter via Seesat-l <
> seesat-l_at_satobs.org>:
> >
> > Using STK to see, what one's were predicted to have a close encounter, I
> had got the result of the following one's
> >
> > OPS 3367 A = 00734
> >
> > DMSP 5D-2 F9 (USA 29)  = 18822
> >
> > STK shows a result, of the 2 satellites passing within 16 km of each
> other, at 21:49:44 utc ( Jan 7 )
> >
> > Kevin
> >
> > --------------------------------------------
> > On Fri, 1/6/17, DAVID DICKINSON via Seesat-l <seesat-l_at_satobs.org>
> wrote:
> >
> > Subject: Satellite Collision
> > To: "Seesat List" <seesat-l_at_satobs.org>
> > Received: Friday, January 6, 2017, 6:23 PM
> >
> > Dear Gang,
> > Space-Track/JSpOC is currently listing a possibility (44%)
> > of an collision between two unnamed satellites in
> > sun-synchronous orbit tomorrow at ~21:53... anyone have any
> > idea which two satellites are involved?
> > Thanks,  Dave Dickinson Blog: www.astroguyz.com Twitter:
> > http://twitter.com/Astroguyz Youtube: http://www.youtube.com/astroguyz
> > _______________________________________________
> > 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-l
>
_______________________________________________
Seesat-l mailing list
http://mailman.satobs.org/mailman/listinfo/seesat-l