I'm posting this question here because, even though it properly belongs in "Support Software", I've had a question down there for days and there's been no answer; up here there seems to be more attention...<br />Where can I find some more pre-launch TLEs ( other than the one in the STSPlus help file) and how can I simulate a Chase/Catch-up of the STS to the ISS?<br />Also, how would one know when to go to a regular TLE? Is it just when the STS reaches apogee? And, by the way, with the STS-67 pre-launch TLE in the STSPlus help notes, the STS reaches an "apogee" and stays right about there. Is the OMS-2 burn in the software?