A SpaceX Falcon 9 rocket is set for liftoff from Vandenberg Space Force Base, heading southeast over the Pacific Ocean with NASA’s DART asteroid deflection experiment.
The 229-foot-tall (70-meter) rocket is poised for takeoff from Space Launch Complex 4-East at Vandenberg Space Force Base, California, at 10: 21: 02 p.m. PST on Nov. 23 (1: 21: 02 a.m. EST; 0621: 02 GMT on Nov. 24).
The payload for the mission is NASA’s Double Asteroid Redirection Test, or DART, mission. The first-of-its-kind mission will take aim on a binary asteroid next September, guiding itself to strike the smaller of the pair.
The target asteroid, named Dimorphos, is about the size of a football stadium. Scientists will use ground-based telescopes to measure how much the kinetic impact from DART changed the orbit of Dimorphos around its larger companion, named Didymos.
The experiment will demonstrate how a future spacecraft could be launched to nudge an asteroid off of a collision course with Earth. Didymos and Dimorphos, the asteroid system targeted by DART, do not pose any near-term threat to our planet.
DART was developed by the Johns Hopkins University Applied Physics Laboratory, and funded by NASA. The entire mission costs $330 million, according to NASA.
The Falcon 9 first stage booster set to launch the DART mission has two previous flights to its credit. It first flew in November 2020 with the Sentinel-6 Michael Freilich oceanography satellite, then launched again in May with 60 Starlink internet satellites.
The second stage will perform a “dogleg” steering maneuver, or a left turn, early in its burn to align with the proper track for DART’s launch. The trajectory allows SpaceX to position its drone ship for the first stage landing a proper distance away from Isla Guadalupe, a Mexican island west of Baja California.
The timeline below outlines the launch sequence for the Falcon 9 flight with DART.
Data source: SpaceX
T-0: 00: 00: Liftoff
T+0: 01: 00: Mach 1
T+0: 01: 12: Max Q
T+0: 02: 33: MECO
T+0: 02: 36: Stage 1 Separation
T+0: 02: 44: First Ignition of Second Stage
T+0: 03: 11: Fairing Jettison
T+0: 06: 40: Stage 1 Entry Burn Begins
T+0: 08: 06: SECO 1
T+0: 08: 52: Stage 1 Landing
T+0: 28: 37: Second Ignition of Second Stage
T+0: 29: 30: SECO 2
T+0: 55: 40: DART Separation
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