Hi Bjorn : Thanks for your reply .( Link to a .gif below ) http://www.studiodynamics.net/moon/cz_4c_deb.gif > > I spotted it in an area that was still (supposedly) in shadow ... > ...at the altitude of this fragment - not the area itself. Understood . > > The best-guess , for me , might be a UNID perhaps , that may have an odd , maybe deep > > orbit ... > This would be most likely! SkyMap also reports this piece in shadow at > 1613 km range, thirty other objects within +-8 min and 5 deg are closer. > The closest ones sunlit in the area within +-8 min are at ~1700 km, some > debris objects entering shadow about ten degrees left . Hmmm . Well , Satflare does show two SL-6 R/B (2) (NORAD 17081 & 21199) that are right there at that time, not in shadow , and not moving very quickly like CZ-4C DEB was . However , they are both on the other side of Capella , and for quite a long time . http://www.studiodynamics.net/moon/cz_4c_deb.gif CZ-4C DEB is absolute perfect position relative to the stars I used to locate it but unless it's orbit has been altered , or the SL-6 R/B's orbit has been altered then I guess we are looking at a UNID ? So , should I do an FPAS for a UNID ? I'm guessing ,... yes . > > However, regarding your last question, the space-track (NORAD) common names are not > > unique. > > While in-tact satellites have unique names, rocket bodies and debris do not. The rocket > > bodies are named by class (CZ-4C is a designation for a Chinese Long > > March 4C). Debris is > > named after the source body name with deb appended. For the case of > > rocket bodies, it's therefore possible for debris from different sources to have the > > same common name. The international designation can tell you which objects are > > associated with the same launch. > Well, not only DEBris from rocket bodies - the rockets themselves exist in multiples. > There are six CZ-4C R/B, and e.g. 429 SL-8 R/B in the full catalog (295 still in orbit). > Also DEBris from COSMOS 2251, IRIDIUM 33, FENGYUN 1C (these are the most notable, many > other satellites have one to dozens of debris). > /Björn Thanks Bjorn . I had no idea . Cheers , gc -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mailman.satobs.org/mailman/private/seesat-l/attachments/20120913/13a733d8/attachment.html _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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