I have created a map showing how the NOTAM zones for the FIA Radar 1 launch 2010 September, and the upcoming NRO L-25 mission line up: http://www.zarya.info/Gallimaufry/FIARadar.php Bob Christy On 26/03/2012 21:09, Bob Christy wrote: > A NOTAM has been published for the impact zones of launcher components. > Being a different vehicle from the first FIA Radar satellite, they lie > at different distances from Vandenberg. The new ones (Delta 4) line up > very well along the same track and between the ones from the earlier > Atlas launch. > > The restriction period is 22:15-23:34 UTC. It fits the 22:30 launch time > with some spare time for unexpected delays. It hints, possibly, at a > launch window of about 30 minutes duration. > > Bob Christy > > > On 25/03/2012 07:26, Ted Molczan wrote: >> NROL-25 is scheduled for launch on a Delta IV Medium+ (5,2), from Vandenberg AFB, on 2012 Mar 29 at 22:30 UTC. I am >> confident that its payload is the second FIA Radar satellite. >> >> FIA Radar 1 (10046A / 37162) was launched on NROL-41, from VAFB, aboard an Atlas V-501. If NROL-25's ascent trajectory >> is identical to that of NROL-41, then the payload's orbit at the first ascending node after separation from the second >> stage will be: >> >> 1067 X 1080 km >> 1 79701U 12090.05719863 .00000000 00000-0 00000-0 0 08 >> 2 79701 122.9931 201.7813 0008524 77.8521 282.3398 13.49540846 03 >> >> Since the launch vehicle is different, it is reasonable to expect small differences from the above elements. >> >> Northern hemisphere observers will have evening visibility. Southern hemisphere observers will have morning visibility. >> >> Since the performance of the Delta IV Medium+ (5,2) exceeds that of the Atlas V-501, it is reasonable to expect that >> NROL-25's second stage will de-orbit soon after payload separation, the same as NROL-41's Centaur. >> >> FIA Radar 1 manoeuvred over a 21 day period to adjust its orbit to an altitude of 1103 km, with the argument of perigee >> frozen near 90 deg. >> >> FIA Radar 2's RAAN will be nearly 180 deg east of that of FIA Radar 1, and their planes will be 114 deg apart. >> >> I expect NROL-39 and NROL-45 to complete the initial FIA Radar constellation. Both are Atlas V-501 launches from VAFB. >> >> Ted Molczan >> >> >> _______________________________________________ >> Seesat-l mailing list >> http://mailman.satobs.org/mailman/listinfo/seesat-l >> >> >> ----- >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2012.0.1913 / Virus Database: 2114/4891 - Release Date: 03/24/12 >> >> > _______________________________________________ > Seesat-l mailing list > http://mailman.satobs.org/mailman/listinfo/seesat-l > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.1913 / Virus Database: 2114/4895 - Release Date: 03/26/12 > > _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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