Follow the Atlas 5 rocket’s ascent from Cape Canaveral’s Complex 41 launch pad to send NASA’s OSIRIS-REx on an interplanetary trajectory to intercept Asteroid Bennu and bring back a pristine sample. Launch is scheduled for Thursday at 7:05 p.m. EDT (2305 GMT).
(Editor’s note: Times will vary slightly depending on when liftoff occurs during the two-hour daily launch window.)
T+04:09: Stage Separation
The Common Core Booster first stage of the Atlas 5 rocket separates from the Centaur upper stage. Over the next few seconds, the Centaur engine liquid hydrogen and liquid oxygen systems are readied for ignition.
T+12:23: Centaur Engine Cutoff No. 1
The Centaur engine shuts down after arriving in its planned temporary orbit around the Earth. The vehicle enters a brief coast period before reaching at the required location in space for the second burn.
See earlier OSIRIS-REx coverage.
Our Atlas archive.