firstname.lastname@example.org said: >According to Don Horton's website, the final Mir orbit adjustment >was made on Feb 02. The adjustment is barely noticeable and period >remains the same from previous recent earlier elsets. > >http://www.bcn.net/~dhorton/zarex.html The Feb 2 boost was about 3.4 km in Mir's apogee (99033.62215070) The Jan 29 boost was about 3.5 km in apogee (99029.93231147) The Jan 27 boost was rather small - enough so I can't see it in the TLEs. It seems strange that these boosts were scheduled as three separate burns, I suspect that it may have been to tweak the orbit to match the sun angles for Znamya over the planned target cities. Philip Chien, KC4YER Earth News world (in)famous writer, science fiction fan, ham radio operator, all-around nice guy, etc.