On 20/06/30 17:09, Richard Cole via Seesat-l wrote: > There is an article on Spaceflightnow.com that says: > >> Mission planners also changed the perigee of the spacecraft’s initial >> orbit after launch from around 740 miles [for SV01] to 250 miles [for >> SV03], according to Col. Edward Byrne, senior materiel leader at SMC’s >> Medium Earth Orbit space systems division. > > Elsewhere it is clear this is the transfer orbit that is being referred > to. Therefore, the initial injection orbit has a much lower apogee than > on SV01 (which have have put it at 1300km altitude at the second stage > reignition at T+62mins). This will make it lower and much brighter on > the first orbit pass over Europe. Here is a TLE estimate for an assumed 200 x 400 km initial coasting orbit: GPS III SV03 launch 2020-06-30 19:55:00 UT 200 x 400 km 1 70000U 20999A 20182.82986111 .00000000 00000-0 00000-0 0 08 2 70000 055.0000 116.8043 0149742 045.0627 327.7197 15.90815658 07 Sighting opportunities in SE Europe. For NW Europe the sky probably is still too bright (and weather bad). - Marco ---- Dr Marco Langbroek Leiden, the Netherlands e-mail: marco_at_langbroek.org web: http://www.langbroek.org twitter: _at_Marco_Langbroek ---- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Tue Jun 30 2020 - 11:34:46 UTC
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