Re: Zuma and USA 276

From: Scott Tilley via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 15 Nov 2017 22:39:17 -0800
Thanks for the analysis Marco as I know this takes a lot of time to go 
back a forth with then formulate a statement so much appreciated.

We'll be watching!

s


On 2017-11-15 4:34 PM, Marco Langbroek via Seesat-l wrote:
> Hi all,
>
> I would like to draw attention to the fact that if the Zuma launch coming Friday
> happens in the first 15-20 minutes or so of the launch window opening (Area
> Warnings are for a window between 0:55 UT - 3:37 UT, Nov 17), this would mean
> that Zuma would end up very close to USA 276 after orbit insertion.
>
> Any launch moment between say 1:00 UT and 1:15 UT would be very interesting for
> that reason.
>
> USA 276 makes a pass right over Cape Canaveral around 1:08 UT on Nov 17 (not
> just the orbital plane, but the actual satellite does).
>
> Launch of Zuma near 1:02 UT would almost have the two satellites meet at orbit
> insertion, assuming insertion at a similar orbital altitude. I pressume that
> would be a bit too much and will not happen, but it wouldn't surprise me if the
> launch nevertheless occurs in the first 15-20 minutes of the window, with the
> two satellites ending up in very similar orbits and actually not too far distant
> from each other.
>
> I readily admit, this all to a high degree remains speculation and wishful
> thinking of course. We'll see what happens. But I found it curious enough to
> draw attention to it.
>
> - Marco
>
>
> -----
> Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
> e-mail: sattrackcam_at_langbroek.org
>
> Cospar 4353 (Leiden):     52.15412 N, 4.49081 E (WGS84), +0 m ASL
> Cospar 4355 (Cronesteyn): 52.13878 N, 4.49937 E (WGS84), -2 m ASL
> Station (b)log: http://sattrackcam.blogspot.com
> Twitter: _at_Marco_Langbroek
> -----
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Received on Thu Nov 16 2017 - 00:40:17 UTC

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