These observations are for the first group of 20 satellites from the L-10 Starlink launch of 2020 August 18 to reach their 550 km operational altitude. The apparent magnitudes listed below were recorded on 2020 October 13-15 which was about a week after they reached 550. The average standard magnitude adjusted to 1000 km is 7.07 which is 1.14 fainter than pre-VisorSat satellites. The standard deviation of the 25 magnitudes is 0.37 and that of the mean is 0.07. Jay Respler observed this same group of satellites on October 14-15 as reported here http://www.satobs.org/seesat/Oct-2020/0069.html. The average standard magnitude of 8 observations was somewhat fainter, 7.46, as seen from his location. Two other satellites were not seen at all. Analyses of previous VisorSat observations by Richard Cole, Jay Respler and myself are posted here http://www.satobs.org/seesat/Sep-2020/0050.html and here http://www.satobs.org/seesat/Oct-2020/0004.html. Tony Mallama 38.982, -76.763 Starlink number, UTC, apparent magnitude: October 13/14 1611 23:51:55 7.1 1641 23:56:55 5.9 1597 00:01:53 6.7 1615 00:06:55 6.3 1629 00:11:53 5.7 1608 00:16:42 6.3 1628 00:21:40 6.5 1592 00:26:20 6.3 1626 00:30:58 6.0 1601 00:35:55 6.5 1630 00:40:43 6.2 October 14/15 1595 23:36:28 6.5 1640 23:41:29 6.8 1611 23:46:27 6.0 1641 23:51:24 6.0 1597 23:56:25 5.8 1615 00:01:28 6.2 1629 00:05:17 6.5 1608 00:10:38 6.2 1628 00:15:32 6.0 1592 00:20:55 5.8 1626 00:25:55 5.9 1601 00:30:04 6.1 1630 00:34:52 5.9 1613 00:40:08 6.2 _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Fri Oct 16 2020 - 16:44:55 UTC
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