MMS nebula question

From: Ed Cannon via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 13 Mar 2015 17:59:36 +0000 (UTC)
This is just to ask for clarification on what part of
the event I saw.  At 4:15 UTC it was about twice the
size of the full Moon and generally circular.  I'm not
good at all at estimating the magnitude of an extended
object like that, but it was very easy to see without
any magnification, and the sky was not very dark 
either, although it was darker than BCRC so may have
been limiting magnitude of about +5, perhaps.  About
two minutes later it had grown in size to several 
degrees in length and not quite as wide, and it was 
still easy to see without binoculars (which I had left
at home!) until it went above/behind the north-to-south 
cirrus cloud band that stretched from horizon to 
horizon and was replicated over and over to the east.

Anyway, using what Cees B. posted for the on-time 
launch:

Event 84001
======================
Launch 02:44:00
MECO-2 04:02:11
MMS-4 sep 04:16:11
MMS-3 sep 04:21:11
MMS-2 sep 04:26:11
MMS-1 sep 04:31:11

it seems that I saw something that occurred after 
MECO-2 and right around the time of "MMS-4 sep", if 
those events occurred on time per that schedule.  At
that time the predicted range was about 2,300 miles 
(3,680 km).  (I goofed in my post last night as to 
the range.)

Ed Cannon - Austin, Texas, USA
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Received on Fri Mar 13 2015 - 13:00:37 UTC

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