Re: MMS nebula question

From: C. Bassa via Seesat-l <>
Date: Fri, 13 Mar 2015 23:28:37 +0100
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.

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Received on Fri Mar 13 2015 - 17:29:15 UTC

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