Allow me to expand on Nico's message. Passive radio observations of OTV 6 have been obtained on three passes, the first directly after launch, the other two earlier today. Fitting a circular orbit to all three passes; fitting for mean anomaly, RA of the ascending node, mean motion as well as inclination, yields the following orbit: OTV 6 (3 passes) 390 x 392km 1 84001U 20139.01686850 .00000000 00000-0 50000-4 0 04 2 84001 44.9398 319.5572 0001000 0.0000 107.1462 15.59403495 01 Though it is expected that OTV 6 was inserted into its orbit around or before the first pass directly after launch, excluding it and only using the two passes of today yields: OTV 6 (2 passes) 391 x 392km 1 84002U 20139.01686850 .00000000 00000-0 50000-4 0 05 2 84002 44.9655 319.7503 0001000 0.0000 107.1197 15.59340098 08 The two orbits are very similar and indicate an orbital altitude of 390 km (under the assumption of a circular orbit) at 45 degree inclination. Currently, these orbits predict visibility near the equator though evening visibility for Northern hemisphere observers will improve over the next few weeks. The designation of OTV 6 has not yet been released by space-track.org, and given some confusion about cubesats being deployed from Cygnus NG-13, I use temporary designations. Regards, Cees _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Mon May 18 2020 - 06:43:02 UTC
This archive was generated by hypermail 2.3.0 : Mon May 18 2020 - 11:43:02 UTC