Hi Tristan, > Most Centaur rockets have always been steady (according to my own observations) I am somewhat surprised by such a statement, since it is not what I have been currently noticing. See for instance several threads in my blog at : https://www.flickr.com/groups/satellites_artificiels/ More exhaustively, the russian site 'astroguard.ru' (MMT data) lists multiple examples of flashing Atlas Centaur rockets. Concerning 2007-060B their graph shows how the rotation period has been decreasing for the last years ; their last measurement is at 48.72s for the rotation period (twice your photometric period). See also the info by the same russian site about Landsat 4 1982-072A. They measured a rotation period at 16.7 s in 2018 but observed the rocket as 'Aperiodic' in other circumstances too. Regards Alain Figer Gometz: 48.67 N ; 2.13 E ; 170m a.s.l. Vars: 44.57 N ; 6.68 E ; 1850m a.s.l. Le sam. 20 avr. 2019 à 10:28, tristan.cools--- via Seesat-l < seesat-l_at_satobs.org> a écrit : > Hi all, > > Most Centaur rockets have always been steady(according to my own > observations) but I was surprised to see 07-60B/32379 as a nice regular > varying object with a period of about 23s. I think I will follow this > object to see it's future flash behaviour. Maybe this has already been > reported... > > Another object, is the Landsat 4 satellite(82-72A/13367), no exact period > measured but around 30s with sharp and round maxima. In my old records I > had a notice written that this satellite did have a mechanism to be > retrieved by the Space Shuttle. Well, it is too late for that, but only > one satellite I think has ever been retrieved and re-launched I remember. > > greetings, > Tristan Cools > Belgian Working Group Satellites. > _______________________________________________ > 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 Sat Apr 20 2019 - 04:37:08 UTC
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