I do know that there is different orbital elements for the various modules that make up the ISS. The problem is that using the orbital elements for the ISS and soyuz, shows them apart, when they are docked. If they are not tracking soyuz behind the iss, then whats going wrong with there equipment, and what are they tracking if they are really tracking something. Here some info on the ISS from the oig ISS (ZARYA) 1 25544U 98067A 01096.68481481 .00091097 00000-0 10041-2 0 8393 2 25544 51.5691 89.0926 0005380 249.6761 99.3541 15.62329136135901 25575 ISS (UNITY) No TLE found. ISS (ZVEZDA) 1 26400U 00037A 00208.84261022 +.00077745 +00000-0 +63394-3 0 00592 2 26400 051.5790 297.6001 0012791 171.3037 188.7763 15.69818870002328 26700 ISS (DESTINY) No TLE found. so objects 25575 and 26700 don't have orbital elements for them, and look at the epoch of the 26400 object they are for the future, what the heck is going on. I am going to send a message to norad and see what they say, since they supply the data to the oig. Kevin From: "ERKENSWICK, TOM M. (JSC-DM)" <tom.m.erkenswick1@jsc.nasa.gov> To: SeeSat-L@blackadder.lmsal.com Subject: RE: Observations Date: Fri, 6 Apr 2001 13:01:49 -0500 Don't be misled by the fact that various ISS modules and vehicles, including the Soyuz, have their own orbital elements in the OIG catalog that differ slightly from those attributed to ISS itself. They are in fact all attached. Otherwise, the Soyuz couldn't do its job as the lifeboat! :-) The same problem existed for Mir...Kvant-2, Kristall, Priroda and Spektr all had slightly different orbital elements in the OIG catalog, despite the fact that they were attached to the Mir baseblock. I'm sure that they are maintained as separate items because of the fact that they have a freeflight period when they rendezvous with the space station, and the possibility (however remote) that at some point they may undock. But I don't have a clue as to why the orbital elements aren't synchronized while they are docked. Tom M. Erkenswick _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Fri Apr 06 2001 - 21:23:56 PDT