Hi Marco I have noticed that the WATEC is very good at catching night flying birds - must have just the right spectral response. Im often fooled by birds especially if they just happen to fly in a straight line across the field of view. I have noticed that the birds seem to like occupying a certain part of the sky ... most times they are very bright -- mag +3 or so - make lovely UFO videos! Cheers Greg ----- Original Message ----- From: "Marco Langbroek" <marco.langbroek@online.nl> To: "satelliet lijst (SeeSat)" <SeeSat-L@satobs.org>; "Ted Molczan" <tedmolczan@rogers.com>; "Pierre Neirinck" <pierre-neirinck@wanadoo.fr>; "Bram Dorreman" <bram.dorreman@skynet.be>; "Greg Roberts" <grr@telkomsa.net>; "Philip Masding" <zen32156@zen.co.uk>; "Scott Campbell" <campbel.7@hotmail.com> Sent: Thursday, November 15, 2012 1:59 PM Subject: Bird or UNID satellite? > > Hi all, > > While setting up my WATEC video system yesterday to monitor a potential > asteroid occultation, and checking the system out on the Pleiades, I recorded > a possible UNID of about mag. +7.5: > > 00000 00 000X 4353 G 20121114190908670 17 75 0356406+243550 56 +075 10 > 00000 00 000X 4353 G 20121114190909510 17 75 0354146+248880 56 +075 10 > 00000 00 000X 4353 G 20121114190909870 17 75 0353098+251250 56 +075 10 > 00000 00 000X 4353 G 20121114190911030 17 75 0349365+259090 56 +075 10 > > Video: > > http://sattrackcam.blogspot.nl/2012/11/is-it-bird-or-possible-unid-satellite.html > > A cautious fit using Scott Campbell's software yields a retrograde orbit: > > 1 00000U 00000X 12319.79804433 0.08150896 00000-0 50000-4 0 03 > 2 00000 127.9164 82.0201 0001856 256.4133 195.3316 16.53901902 03 > > STA YYday HHMM:SSsss AZ EL ASP XTRK deltaT Perr > ( 1) 4353 12319 1909:08670 86.8 29.1 31.2 -0.01 0.01 0.011 > ( 2) 4353 12319 1909:09510 86.9 29.9 31.9 0.00 -0.00 0.002 > ( 3) 4353 12319 1909:09870 86.9 30.2 32.3 0.00 -0.01 0.006 > ( 4) 4353 12319 1909:11030 87.0 31.3 33.3 0.00 -0.00 0.003 > > > HOWEVER: an object in such an orbit would be in shadow, and the retrograde > character (plus mean motion) is unlikely too. So perhaps it was a bird, though > usually those are more recognizable. > > - Marco > > > ----- > Dr Marco Langbroek - SatTrackCam Leiden, the Netherlands. > e-mail: sattrackcam@langbroek.org > > Cospar 4353 (Leiden): 52.15412 N, 4.49081 E (WGS84), +0 m ASL > Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL > Station (b)log: http://sattrackcam.blogspot.com > Twitter: @Marco_Langbroek > ----- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
This archive was generated by hypermail 2b29 : Thu Nov 15 2012 - 14:18:12 UTC