Here are Marco Langbroek's new NROL-47 elsets, for launch tonight (11 January), updated from the original launch time 21:00 UT to the new launch time of 22:05 UT. Text is as Marco wrote. Coverage is here: https://spaceflightnow.com/2018/01/10/delta-4-nrol-47-mission-status-center/ First, taking the launch azimuth at face value (resulting in a 108.6 degree inclined orbit), for two altitude variants, one ~1500 km orbital altitude and one for a FIA-like ~1100 km orbital altitude: NROL-47 1495 X 1505 1 70000U 18999A 18011.92013889 .00000000 00000-0 00000-0 0 07 2 70000 108.6398 130.3140 0006347 166.4011 308.2684 12.41559515 04 NROL-47 1100 X 1110 1 70001U 18999A 18011.92013889 .00000000 00000-0 00000-0 0 08 2 70001 108.5831 130.3140 0006682 166.4011 304.1188 13.41149813 09 Second, two more altrenative elset (for the same two altitude variants) that assume an inclination-changing manoeuvre into a 123.0 degree inclined FIA-like orbit upon first nodal passage: NROL-47 ALT 1495 X 1505 1 70004U 18999A 18011.93472222 .00000000 00000-0 00000-0 0 02 2 70004 123.0000 130.3263 0006347 179.9597 359.9483 12.41559515 03 NROL-47 ALT 1100 X 1110 1 70005U 18999A 18011.93162038 .00000000 00000-0 00000-0 0 04 2 70005 123.0000 130.3427 0006682 180.0080 359.9441 13.41149813 09 For more background details, see Marco's earlier posted here: http://www.satobs.org/seesat/Jan-2018/0080.html ..and here: http://www.satobs.org/seesat/Jan-2018/0089.html Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu Jan 11 2018 - 15:56:53 UTC
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