Are there any references, online or otherwise, that talk about the math needed to convert RA/Dec/Time to TLEs? Modifing a current TLE based off new information and also generating them from purely observational data? Do you try to convert the RA/Dec/Time into a geocentric vector and then convert the vector back to a TLE? If so, where can one find the math/code for the vec2tle conversion? Or does everyone just guess values until the TLEs match what they saw? When looking for a satellite w/old TLEs (assuming no active thrusting) how would one ideally look to recover a satellite? Would you try to precess the RAAN, integrate the drag terms into a new mean motion, etc? Or do you just look along its predicted path and hope that you get lucky finding it being early or late? How do you deside where to look and when to look at certain locations in the sky? Thanks in advance for any help on these questions! --- Marek Kozubal marek@portents.com ----------------------------------------------------------------- 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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