Re: DRAGON CRS-11 elements

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 1 Jun 2017 14:23:39 +0200
Marco and list,

According to several websites the launch of CRS-11 is at 21:55 UT not 22:15
UT.
i hour earlier is 0.416666666 day.
So the correct epoch should be 171552.88640668

Shadow entry time looks OK and based on a 21:55 launch.

Hopefully the weather co-operates this night.

Greetings
Leo


2017-06-01 13:20 GMT+02:00 Marco Langbroek via Seesat-l <seesat-l_at_satobs.org
>:

>
> Hi all,
>
> I have posted this elset before on the list a while ago, but a repeat as
> that
> was a while ago and launch is now imminent.
>
> This evening at 22:55 UT, all going well, SpaceX will launch the DRAGON
> CRS-11
> supply ship to the ISS.
>
> 20 minutes later, the Dragon, Falcon 9 r/b and two ejected solar covers
> will be
> visible over Europe.
>
> Here is an estimate of the orbit of CRS-11 on this pass, based on launch at
> 22:55:00 UT (June 1):
>
>
> DRAGON CRS-11
> 1 72000U 17000A   17152.92807335 0.00000000  00000-0  00000+0 0    02
> 2 72000  51.6320 114.8208 0115859  44.2692  54.5468 15.98180622    02
>
> Shadow entry nominally is near 22:17:30 UT, but this depends on how
> accurate the
> altitudes from the elset above are, so beware.
>
> - 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 Jun 01 2017 - 07:24:24 UTC

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