RE: CLIO satellite launch on Sept 16

From: Ted Molczan via Seesat-l <seesat-l_at_satobs.org>
Date: Wed, 17 Sep 2014 10:49:09 -0400
This is excellent!

Ted


> -----Original Message-----
> From: Seesat-l [mailto:seesat-l-bounces+ssl3molcz=rogers.com_at_satobs.org] On Behalf Of C.
> Bassa via Seesat-l
> Sent: September-17-14 9:06 AM
> To: Seesat-L
> Subject: Re: CLIO satellite launch on Sept 16
> 
> It turns out my assumption that the second burn of the Centaur upper
> stage would occur at apogee and would circularize the orbit was wrong.
> The launch broadcast showed orbital elements at MECO-1, which
> indicated a 176x28865 km orbit with a 27.91 deg inclination.
> 
> Given that information, and the times and latitude, longitude of the
> MECO-1 and MES-2, it is possible to constrain the orbit and determine
> the argument of perigee, mean anomaly and RA of the ascending node.
> 
> With that approach I get the following elset:
> 1 82305U 14999A   14260.12353009  .00000000  00000-0  00000-0 0    09
> 2 82305  27.9102 166.2048 6863818 159.8644 107.8839  2.87429999    00
> 
> The ground trace of this orbit between MECO-1 and MES-2 matches that
> of the mission booklet quite well, so I am confident that this orbit
> is reasonably accurate. This puts the payload at an altitude of 24800
> km at the MES-2 burn, well before it would reach apogee.
> 
> Regards,
>     Cees
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Received on Wed Sep 17 2014 - 09:49:40 UTC

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