Re: MMS nebula question

From: Bryan Tobias via Seesat-l <>
Date: Fri, 13 Mar 2015 17:59:27 -0500
If you guys need the original uncropped versions of the images, let me know and I’d be happy to share if it improves the calculations.  Sure was fun catching this one last night! 

Bryan Tobias

> On Mar 13, 2015, at 5:28 PM, C. Bassa via Seesat-l <> wrote:
> Hi Ed,
> After doing some astrometry on Bryan's images I was able to measure
> positions of the Centaur. Comparison with the 40486/15011E JSpOC elset
> suggests the images were obtained between 04:15:54UT and 04:17:12UT.
> The size of the cloud increases from 1.16 to 3.18 degrees between the
> first and the last images, suggesting an expansion rate of about 1.5
> arcminute per second. Tracing back the expansion in time suggests it
> started at 04:15:08UT. This is about a minute before the separation of
> the first MMS payload.
> It is very likely that this cloud is due to the spin up of the Centaur
> prior to separation of the payloads. The cloud certainly is denser on
> opposite sides, which would support that.
> Regards,
>    Cees
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Received on Fri Mar 13 2015 - 17:59:58 UTC

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