In the last few days the NOSS 3-8 A&B pair (42058 & 42065) are closing in on eachother. On Mar 10 the leading object B was late on predictions and the trailing object A was early. Last night 3 passes were imaged. The leader B was on time but a bit off track in the 3rd pass. The traling object A was still early wrt newer TLE's and on track. To get a time difference between the two objects images were measured with both objects in it. Sattools puts 250 frames in one inmage at 25 fps; so the track of the object is over 10 sec. The length of the track was measured in mm from a zoomed in image and also the lengt in mm from the end of the track of 42065 to the end of the track of 42058. The time difference is then: (length end to end / tracklength) x 10 sec. This gives the following results: 2017-03-10 02:02:06 UT 25.83 sec 2017-03-12 23:49:14 UT 17.36 sec 2017-03-13 01:38:41 UT 16.55 sec 2017-03-13 03:31:03 UT 16.29 sec It looks like the closing in rate is slowing down. Hope the weather will co-operate in yhe next days (or rather nights). Regards Leo _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Mon Mar 13 2017 - 08:40:02 UTC
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