Sorry was updated just as I posted- the latest time advice is in fact NOT BEFORE 1100. Robert On 17 September 2014 10:33, Jon . <jonmikelk_at_gmail.com> wrote: > now 23:00 UT > > 2014-09-17 0:31 GMT+02:00 Robert Holdsworth via Seesat-l > <seesat-l_at_satobs.org>: >> >> Delayed owing to weather. Next attempt at 1044 UTC. >> >> Robert >> >> >> >> On 16 September 2014 05:11, Ted Molczan via Seesat-l >> <seesat-l_at_satobs.org> wrote: >> > CLIO is a Lockheed Martin-built communications satellite (A-2100 bus), >> > belonging to the U.S. Government. It is scheduled >> > for launch between 2014 Sep 16 21:44 UTC and Sep 17 00:10 UTC, from Cape >> > Canaveral, aboard an Atlas V-401. >> > >> > http://www.spaceflightnow.com/atlas/av049/status.html >> > >> > The official pre-launch information bears a strong superficial >> > resemblance to that of PAN (09047A / 35815), which >> > operates in a GSO (geostationary orbit). I suspect that CLIO will do >> > likewise. >> > >> > Judging by the information in the press-kit, the launch trajectory >> > appears to be some variant of the Extended Coast >> > type, which typically results in a highly elliptical parking orbit, in >> > which the vehicle coasts for a period of up to >> > two hours, before manoeuvring to GTO (geosynchronous transfer orbit). >> > The resulting orbit is lower in eccentricity and >> > inclination than that of the more common GTO, in which the manoeuvre to >> > GTO occurs at the first descending node. This >> > reduces the delta-V required of the payload to enter GEO, which saves >> > fuel, and extends its maximum useful life. The >> > spacecraft uses its own propulsion system to perform a series manoeuvres >> > to reach GSO, typically within a few weeks >> > after launch. PAN reached GSO within about 10 days of launch. >> > >> > Assuming launch on Sep 16 at 21:44 UTC, and a parking orbit similar to >> > the one we determined for PAN, the following TLE >> > would be valid from about 22:02 UTC until the manoeuvre to the transfer >> > orbit: >> > >> > Parking orbit 176 X 21623 km >> > 1 78401U 14259.98653000 .00000000 00000-0 00000-0 0 05 >> > 2 78401 25.3510 143.5430 6206470 145.1850 95.2000 3.82400000 00 >> > >> > According to the press-kit, the manoeuvre to the transfer orbit will >> > occur at 00:31:53 UTC (T+ 02h47m52.9s). I may >> > produce an estimated TLE later. >> > >> > Ted Molczan >> > >> > >> > _______________________________________________ >> > Seesat-l mailing list >> > http://mailman.satobs.org/mailman/listinfo/seesat-l >> _______________________________________________ >> Seesat-l mailing list >> http://mailman.satobs.org/mailman/listinfo/seesat-l > > > > > -- > Jon Mikel, COSPAR 6242, 42.9453, -2.82839, 623m, Bitoriano, Basque Country. _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Tue Sep 16 2014 - 17:37:09 UTC
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