Op 21-11-2020 om 18:29 schreef Marco Langbroek via Seesat-l: > After analysis of my imagery, I get a period of ~140 seconds (=2m 20s) from data > between 03:36:00 - 03:43:08 UT. Based on video observations in the night of Nov 22/23, I can now offer a slightly more precise value of (nominally) 138.02 seconds peak-to-peak. This is based on a 23-minute near continuous set of video data between 23:36 and 23:59 UT (Nov 22), covering 10 brightness peaks, taken with a WATEC 902H2 Supreme and Samyang 1.4/85 mm lens. Curve: https://sattrackcam.blogspot.com/2020/11/brightness-variation-of-nrol-101.html The brightness varied semi-regularly between mag +6.0 and +8.5. Given the range and phase angles, this corresponds to an absolute magnitude between +2.0 and +4.5. - 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 Tue Nov 24 2020 - 10:09:28 UTC
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