I recovered USA 245 (39232). Preliminary TLE set for its new 286x999 km orbit: USA 245 1 39232U 13043A 19365.39943200 .00010000 00000-0 10147-3 0 04 2 39232 97.8900 64.1996 0508394 225.3404 281.4041 14.75824432 08 As usual further TLE updates will be provided in this file: https://hamsat1.home.xs4all.nl/tle.tle The orbit planes of USA 245 and Kosmos 2543 are now only 0.26 degrees apart. Kosmos 2543 is still in its 589x860 km orbit. NJ On 26-12-19 15:55, Nico Janssen via Seesat-l wrote: > > Kosmos 2542 was launched on 2019-11-25 into a 368x857 km orbit. > Interestingly, its orbit plane is almost exactly the same as USA 245's > orbit plane. The difference is less than 1 degree. > > On 2019-12-06 the inspector satellite Kosmos 2543 was deployed from > Kosmos 2542. After some initial maneuvers near its 'mother' satellite > Kosmos 2543 started raising its orbit. > > On 2019-12-09 or 2019-12-10 USA 245 changed its orbit. Before its > maneuver it was in a 272x985 km orbit. This is the last TLE set that I > could determine before the maneuver: > USA 245 > 1 39232U 13043A 19342.41935900 .00010000 00000-0 10147-3 0 00 > 2 39232 97.8900 42.9218 0508960 301.2530 203.1441 14.80147872 09 > > I lost track of USA 245 after its orbit maneuver. I suspect it is now > in a > much higher orbit. > > Kosmos 2542 is still in its original orbit. But meanwhile Kosmos 2543 has > climbed to a 590x859 km orbit, still in the same orbit plane as USA 245. > > So what is going on? Is Kosmos 2543 chasing USA 245? And is USA 245 > trying to escape by changing its orbit? Or is all this just a > coincidence? > > > _______________________________________________ > Seesat-l mailing list > http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu Jan 02 2020 - 07:51:35 UTC
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