CmdrJaycee@aol.com said: >I'm hoping someone on SeeSatL might have a little more information on these >"reboosts" and what they mean for the passes predicted for the >Endeavour/Zarya/Unity assembly from 8 Dec on and 11 Dec on. A reboost was performed today (Dec 8 20:36 UT) rasing Babylon 1's orbit from 210 to 215 nautical miles. I didn't check whether or not the second reboost on the 11th is still on or not. Raising the orbit reduces the mean motion (the number of orbits a satellite makes in a day). The Earth continues to rotate at the same speed. The rest is left as an exercise for the reader. ;-) Philip Chien, KC4YER Earth News world (in)famous writer, science fiction fan, ham radio operator, all-around nice guy, etc.