Hi all, The tumble rate of 2020-083B, the Centaur upper stage from the NROL-101 launch, is indeed increasing. Where I measured a peak-to-peak period of 138.02 seconds on Nov 22, my new data from December 4th covering six brightness peaks yield a peak-to-peak period of 114.13 seconds, suggesting an increase of about 2 seconds/day. Brightness variation profile from the Dec 4 video data: https://twitter.com/Marco_Langbroek/status/1336069179666034688?s=20 - Marco ----- Dr Marco Langbroek - SatTrackCam Leiden, the Netherlands. e-mail: sattrackcam_at_langbroek.org Station (b)log: http://sattrackcam.blogspot.com Launchtower: http://launchtower.langbroek.org Twitter: _at_Marco_Langbroek ----- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Mon Dec 07 2020 - 16:11:57 UTC
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