We have excellent predicted passes but dreadful weather owing to the remains of a cyclone heading this way from Australia. Unlikely to be able to take a look for several days! Robert Wainuiomata New Zealand S 41.244 E 174.946 On 4 April 2017 at 09:08, Chris Jones via Seesat-l <seesat-l_at_satobs.org> wrote: > On 04/03/17 4:46 PM, Tristan Cools via Seesat-l wrote: > >> Has someone recently oberved 2007-27B/31702, an Atlas second stage >> Centaur rocket ? At the time of launch it under-performed placing a >> NOSS duo in a lower than intended orbit. I presume there must be >> some fuel left over. > > > Given the Centaur's propellants (LH2 and LOX), I would be surprised if > either of those had lasted 10 years, even without any attempt to > passivate the the stage. The RCS uses a hydrazine monopropellant, which > could probably survive if it weren't dumped (the Wikipedia article says > 340 pounds are carried, split between two bladder tanks). > > Since I expect they would have attempted to dump the propellants, if > that were successful, there shouldn't be propellants left over. > > > _______________________________________________ > Seesat-l mailing list > http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Mon Apr 03 2017 - 19:06:01 UTC
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