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 _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu Nov 26 2020 - 19:10:29 UTC
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