New information suggests a launch into a 190 x 575 km elliptical orbit, followed by a circularization burn at apogee. That would yield something like these two elsets (which are for launch on 16 Sep at 00:02 UT, the opening of the launch window): INSPIRATION4 rev 1 for launch on 16 Sept 2021 00:02:00 UT 1 70004U 21999A 21259.00138889 .00000000 00000-0 00000-0 0 00 2 70004 051.6000 251.1887 0284737 048.1748 324.5345 15.61785606 01 INSPIRATION4 post-circ for launch on 16 Sept 2021 00:02:00 UT 1 70005U 21999A 21259.00138889 .00000000 00000-0 00000-0 0 01 2 70005 051.6000 251.2407 0003597 047.8286 333.3751 14.98186673 04 The first elset is for immediately after orbit insertion: the second post-circularization elset would be valid post ~01:00 UT. Note that you can easily adjust these elsets to any other launch time using my "TLE from Proxy" software which you can find at http://software.langbroek.org (the launch is in the middle of the night for me, so I will not be immediately available myself to produce new elsets if the launch is later than 00:02 UT) If Inspiration4 launches close to opening of the launch window, the orbital plane will be similar to that of the ISS (the ISS orbital plane passes over the launch site at 23:54 UT on Sep 15, 8 minutes before launch). The ISS itself will pass near the launch site at 00:11:40 UT, around the time of orbit insertion of Inspiration 4 if launch is at 00:02 UT), so if it does launch right at the opening of the window, the launch will be visible from the ISS. - Marco ---- Dr Marco Langbroek e-mail: marco_at_langbroek.org web: www.langbroek.org Twitter: _at_Marco_Langbroek ---- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Wed Sep 15 2021 - 15:53:50 UTC
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