Hi, I found evidence of identity swap between Chinese geostationary satellites ZX-20 (object 26058) and ZX-22A (object 28082) made between DOY 176 and 177 in 2008. 1. Both objects jumped simultaneously and immediately between their stations of 103E and 68E. There is no explanation neither need in such relocation. 2. Each object continued other's trend in mean motion, inclination and calculated longitude after the swap. (I should mention that another swap in inclination may be guessed between DOY 164 and 170 -- can't say if it was real.) 3. "New" ZX-22A lost its latitude control capability in January 2010, only 3.5 years after launch. If it is in fact ZX-20, the loss occured more than six years after launch which is more plausible. Are there any visual observations or other data to confirm or deny this swap in designations? Sincerely, Igor Lissov _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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