Hi All, Has anyone else noticed the "dance" going on between the Hubble Space Telescope and Cosmos 1300 (Norad #12785)? I calculate that these two came within 1.2 km of each other on Saturday, June 14th at 14:43:46.1 UTC, and within 5.1 km of each other on Monday, June 16th at 12:41:41.2 UTC. The two will continue to make close approaches to one another every 96 minutes 46 seconds: Date UTC Time Norad Name Range (km) NdAng EphAge 6/16/1997 12:41:41.2 12785 Cosmos 1300 5.1 2.8 +3.62 6/16/1997 14:18:27.4 12785 Cosmos 1300 5.5 21.8 +3.69 6/16/1997 15:55:13.6 12785 Cosmos 1300 6.4 37.4 +3.76 6/16/1997 17:31:59.8 12785 Cosmos 1300 7.6 48.3 +3.83 6/16/1997 19:08:46.0 12785 Cosmos 1300 8.9 55.7 +3.89 6/16/1997 20:45:32.3 12785 Cosmos 1300 10.3 61.0 +3.96 6/16/1997 22:22:18.5 12785 Cosmos 1300 11.7 64.8 +4.03 6/16/1997 23:59:04.8 12785 Cosmos 1300 13.1 67.7 +4.09 6/17/1997 1:35:51.0 12785 Cosmos 1300 14.4 69.9 +4.16 6/17/1997 3:12:37.3 12785 Cosmos 1300 15.6 71.6 +4.23 6/17/1997 4:49:23.5 12785 Cosmos 1300 16.8 73.1 +4.30 6/17/1997 6:26:09.8 12785 Cosmos 1300 18.0 74.2 +4.36 6/17/1997 8:02:56.1 12785 Cosmos 1300 19.1 75.2 +4.43 6/17/1997 9:39:42.4 12785 Cosmos 1300 20.1 76.0 +4.50 6/17/1997 11:16:28.7 12785 Cosmos 1300 21.0 76.7 +4.56 6/17/1997 12:53:15.0 12785 Cosmos 1300 21.9 77.3 +4.63 6/17/1997 14:30:01.4 12785 Cosmos 1300 22.7 77.8 +4.70 6/17/1997 16:06:47.7 12785 Cosmos 1300 23.5 78.2 +4.77 6/17/1997 17:43:34.1 12785 Cosmos 1300 24.2 78.6 +4.83 6/17/1997 19:20:20.4 12785 Cosmos 1300 24.8 78.9 +4.90 6/17/1997 20:57:06.8 12785 Cosmos 1300 25.3 79.2 +4.97 6/17/1997 22:33:53.2 12785 Cosmos 1300 25.8 79.5 +5.03 6/18/1997 0:10:39.6 12785 Cosmos 1300 26.2 79.7 +5.10 6/18/1997 1:47:26.0 12785 Cosmos 1300 26.5 79.8 +5.17 6/18/1997 3:24:12.4 12785 Cosmos 1300 26.8 80.0 +5.24 6/18/1997 5:00:58.8 12785 Cosmos 1300 27.0 80.1 +5.30 6/18/1997 6:37:45.2 12785 Cosmos 1300 27.1 80.2 +5.37 6/18/1997 8:14:31.7 12785 Cosmos 1300 27.1 80.2 +5.44 6/18/1997 9:51:18.1 12785 Cosmos 1300 27.1 80.2 +5.51 6/18/1997 11:28:04.6 12785 Cosmos 1300 27.0 80.2 +5.57 6/18/1997 13:04:51.0 12785 Cosmos 1300 26.9 80.2 +5.64 6/18/1997 14:41:37.5 12785 Cosmos 1300 26.6 80.2 +5.71 6/18/1997 16:18:24.0 12785 Cosmos 1300 26.4 80.1 +5.77 6/18/1997 17:55:10.5 12785 Cosmos 1300 26.0 80.0 +5.84 6/18/1997 19:31:57.0 12785 Cosmos 1300 25.6 79.9 +5.91 6/18/1997 21:08:43.6 12785 Cosmos 1300 25.1 79.7 +5.98 6/18/1997 22:45:30.1 12785 Cosmos 1300 24.5 79.5 +6.04 6/19/1997 0:22:16.6 12785 Cosmos 1300 23.9 79.3 +6.11 6/19/1997 1:59:03.2 12785 Cosmos 1300 23.2 79.0 +6.18 6/19/1997 3:35:49.8 12785 Cosmos 1300 22.4 78.6 +6.24 6/19/1997 5:12:36.3 12785 Cosmos 1300 21.6 78.2 +6.31 6/19/1997 6:49:22.9 12785 Cosmos 1300 20.7 77.8 +6.38 6/19/1997 8:26:09.5 12785 Cosmos 1300 19.8 77.2 +6.45 6/19/1997 10:02:56.2 12785 Cosmos 1300 18.7 76.6 +6.51 6/19/1997 11:39:42.8 12785 Cosmos 1300 17.7 75.8 +6.58 6/19/1997 13:16:29.4 12785 Cosmos 1300 16.5 74.8 +6.65 6/19/1997 14:53:16.1 12785 Cosmos 1300 15.3 73.6 +6.71 6/19/1997 16:30:02.7 12785 Cosmos 1300 14.0 72.2 +6.78 6/19/1997 18:06:49.4 12785 Cosmos 1300 12.7 70.4 +6.85 6/19/1997 19:43:36.1 12785 Cosmos 1300 11.4 68.0 +6.92 6/19/1997 21:20:22.8 12785 Cosmos 1300 10.0 64.8 +6.98 ... The elements I used were: HST 1 20580U 90037B 97164.12191564 +.00000345 +00000-0 +21665-4 0 09693 2 20580 028.4663 063.7286 0014988 152.8368 207.3003 14.86459659192454 and Cosmos 1300 1 12785U 81082A 97163.90546505 +.00000114 +00000-0 +94043-5 0 00859 2 12785 082.4866 316.8230 0017448 055.0692 305.2166 14.89002967854368 Haven't checked yet, but perhaps this pair is sunlit from a dark location at one of the times of close approach ... --Rob