12 Aug 1977 06:29 UTC
Success US Air Force, Atlas SLV-3D Centaur
Astrophysics · LEO
Observatory satellite dedicated to X-ray and gamma-ray studies
Remind me
If the launch moves, your reminders move with it, and at the time of your first reminder we tell you the new date.
There's no exact time yet. Reminders start once the launch gets one.