Re: NROL-151 Search Elements

From: Scott Tilley via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 30 Jan 2020 18:57:38 -0800
Updated orbital guess based on launch time of 2020-01-31T02:56UTC

1 70001U          20031.15972222  .00000000  00000-0  50000-4 0    06
2 70001  70.5000 156.5000 0001000   0.0000  50.0000 14.91626585 02

s

On 2020-01-30 4:55 p.m., Scott Tilley via Seesat-l wrote:
> Hi All
>
> Bob Christy posted a ground track on Twitter best fitting the drop 
> zones for the upcoming NROL-151 launch.
>
> https://twitter.com/Zarya_Info/status/1223031286488555523
>
> I took that and fit an orbit to the satellite release time at Jan 31, 
> 02:22 UTC and came up with this assuming a 600km circular orbit.
>
> 1 70000U          20031.09861111  .00000000  00000-0  50000-4 0 02
> 2 70000  71.0000 138.0000 0001000   0.0000  72.5000 14.91626585 01
>
> As you can see on the first orbit the booster and satellite(s) will be 
> passing over northern EU with the booster in a burn mode. Would be 
> interesting if this can generate a visual sighting while the engine is 
> active.
>
> We'll be looking on radio as well.
>
> Regards,
>
> Scott Tilley
>
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Received on Thu Jan 30 2020 - 20:58:12 UTC

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