At 13:28 2002-12-31 +0000, Alan Pickup wrote: >Sven, > >As I mentioned in my earlier post to SeeSat-L, SCC has changed the >designations so that Shenzhou 4, which was previously the C object, is now >27630 = A. > >In fact, all the C object elsets so far issued, plus the A elsets since >epoch 02365.01917697, can be satisfied by a single orbit to better than >0.1 second in equator crossing time. > >Similarly, all the A elsets up to 02364.70568348 and all the B elsets >since then can be satisfied by a single orbital evolution to better than >0.2 second. That evolution leads to decay on January 10. > >This leaves just four orphan elsets, the earlier ones issued under the B >designation: Alan, I am still confused. Is this what you mean?: - All the C object elsets so far issued, plus the A elsets since epoch 02365.01917697 are indeed the real Shenzhou-4 spacecraft. - All the A elsets up to 02364.70568348 and all the B elsets since then denote a separate object. But what is it? The rocket body? If this is what you mean, then it is true what I wrote - that we do not have any element sets for the real Shenzhou-4 spacecraft in its initial orbit (before the manoeuvre)! Am I right? Sorry for risking to adding to the confusion! Best wishes Sven ---------------------------------------------------- Mr Sven Grahn Rattviksvagen 44, S-192 71 Sollentuna, Sweden Tel: +46 8 7541904, svengrahn@telia.com http://www.svengrahn.pp.se/ ---------------------------------------------------- ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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