30774 07 006C 2701 G 20070519020714510 17 25 1734374+162914 87 S 30772 07 006A 2701 G 20070519020748900 37 25 1745455+110868 18 S+070 05 30774 07 006C 2701 G 20070519020748900 37 25 1745455+110868 18 S+070 05 29651 06 057A 2701 G 20070519033449770 17 25 2223568+452100 37 S 91117 07 631A 2701 P 20070519085850110 17 25 2118183+174047 47 +090 05 91117 07 631A 2701 P 20070519085914290 17 25 2120776+165236 97 +090 05 91117 07 631A 2701 P 20070519085955230 17 25 2125518+153308 47 +090 05 IOD format: http://www.satobs.org/position/IODformat.html Site 2701: 43.68764 N, 79.39243 W, 230 m Earlier, I reported my observation of Astro (07006A / 30772) in formation with Nextsat (07006C / 30774), on their first pass of the evening, at 02:06 UTC. I estimated their separation as 1.3 km: http://satobs.org/seesat/May-2007/0173.html On the second pass, at 03:42:05 UTC, at about 991 km range, they were about 0.03 deg apart (15% of the separation of a pair of nearby reference stars 0.213 deg apart). The corresponding linear separation was about 0.5 km. At that point, they appeared not to be following each other in a line, but moving on parallel tracks, with the left one somewhat ahead of the other. 07631A was about 0.92 s late, and about 0.03 deg off track, relative 2.5 d old elements: 1 91117U 07631A 07136.87113666 .00000000 00000-0 00000-0 0 04 2 91117 50.7137 158.8699 4804182 247.6958 55.6686 5.07303761 06 There seemed to be some variation in brightness, but due to twilight, it was near the limit of visibility, so I could not reliably judge its optical behaviour. Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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