There's now a backup NOTAM for June 19 - same area but the times are one minute later. Bob Christy On 16/06/2012 20:59, Ted Molczan wrote: > Bob Christy wrote: > >> If it helps, and you have not factored it in, there is a NOTAM for the >> upper stage de-orbit: >> >> A2527/12 - AIRSPACE DCC ER OPA6563 ATLAS REENTRY STATIONARY RESERVATION >> WITHIN AN AREA BNDD BY 1900N/17930E 1530N/16900W 0930N/17100W >> 1300N/17730E. SFC-UNL. 18 JUN 21:14 2012 UNTIL 18 JUN 22:19 2012. >> CREATED: 16 JUN 01:18 2012 > An excelled find, Bob; and indeed it does help. It did not occur to me that the Centaur would be de-orbited on a GEO > mission. The time and location does not fit well with either of the GTO TLEs I estimated. The duration from launch > appears to be less than 9 h. If it is a GEO mission, then perhaps the GTO is of the low-altitude type that leave > considerable manoeuvring to the payload to reach the final orbit. A manoeuvre near apogee to bring about the Centaur's > de-orbit would explain the need for thermal paint. I need to put some numbers to this. > > There is some evidence that the window may not be planar, as would be expected for an inclined GEO mission. It seemed > inconclusive, so I discounted it. This could mean that the intended orbit is geostationary, i.e. zero deg inclination, > or perhaps not GEO at all. > > Others have noted the three-headed dragon on the patch, that has long been associated with SIGINT or COMINT missions. > Considering the high-level warning issued several years ago to avoid those sorts of leaks, I have tended to discount > recent patches, many of which have been rather bland. I have also been wary of the possibility that new patches might > use old themes in new ways to muddy the record. Yet some recent patches seem to have revealed useful information. > > I intend to look into this further, perhaps tonight. > > 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: 10.0.1424 / Virus Database: 2433/5073 - Release Date: 06/16/12 > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mailman.satobs.org/mailman/private/seesat-l/attachments/20120617/82a2bdda/attachment.html _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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