Recent Starlink/VisorSat Magnitudes, Analysis and Related News

From: Anthony Mallama via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 26 Nov 2020 20:09:39 -0500
I recorded 65 magnitudes for VisorSats at the 550 km operational altitude
this month. Their average magnitude adjusted to 1000 km distance was 7.44
which is 1.55 magnitude fainter than Starlink satellites without the sun
visor.

Some of these satellites had just reached 550 km. In the past such objects
tended to be brighter than average. However, their magnitudes are the same
in this sample. I analyzed the magnitudes reported by Jay Respler on this
site, too, and found similar results.

Also during November the third and final set of about 20 VisorSats from
Starlink launch L9 attained 550 km altitude along with the second set from
L10. Finally, the first sets from L12 and L13 along with the second set
from L11 are approaching that operational altitude.

Brightness estimates for VisorSats at 550 km accurate to about 0.2
magnitude or better are being sought. This email thread provides
information about determining satellite magnitudes:
http://www.satobs.org/seesat/Jul-2020/0040.html.

Tony Mallama
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Received on Thu Nov 26 2020 - 19:10:29 UTC

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