At around 7:40 UTC, XM-4 ( 29520 ) was at it's brighest. I would estimate in the Magnitude 6 range.
Yet roughly 5 minutes on either side of this time, it was faint, in the Magnitude 8 range.
So a rather quick event.
At 7:40 UTC, XM-4 would be around
2 h 00 m R.A
-6 deg 35 min Dec
The sun was at
14 h 00 m R.A
-12 deg 28 min Dec
This sat doesn't have the angled solar reflectors.
XM-2 ( 26724 ) which has the angled solar reflectors, didn't undergo a quick change in Magnitude, when it reached the same area of sky, that the flare from XM-4 occured at.
Intelsat 1R is brighest, after it passes the area of sky, that's 12 hours difference in R.A from the sun, yet XM-
4 was brighest, when it was around 12 hours difference from the sun, in R,A.
Intelsat 1R, like XM-2 and XM-1 had slow change in Magnitude.
Interesting
Kevin
44.6062 N
75.6910 W
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