4 ms·
They have enough propellant to change their orbital height by quite a lot, more than the typical satellite (other than GTO-to-GEO thrusters.) OTOH you can just
by greglindahl 7y ago
They have enough propellant to change their orbital height by quite a lot, more than the typical satellite (other than GTO-to-GEO thrusters.)
OTOH you can just ask SpaceX or the Air Force where they have been in the past, SpaceX uses GPS and the Air Force radar is accurate enough for knowing where they were.
- londons_explore 7y agoIf the astronomer community requested it, I'm sure spacex would give them a real-time (or even a few minutes ahead of time) feed of satellite positions accurate to less than a pixel on these telescopes.