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IXPE (Imaging X-ray Polarimetry Explorer)

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Key Launch Day Milestones for NASA’s IXPE

NASA's IXPE spacecraft
Tune in to NASA Television, the NASA app, or the agency’s website, starting at 12:30 a.m. EST for a live broadcast of the IXPE launch. Photo credit: SpaceX

Here is a look at some of the key milestones for today’s IXPE launch:

Mission Timeline (all times approximate)
LAUNCH AND SPACECRAFT DEPLOYMENT
Time Events
1 a.m. EST Liftoff
T+153 sec First stage main engine cutoff (MECO)
T+156 sec First and second stages separate
T+164 sec Second stage engine start 1 (SES-1)
T+220 sec Fairing deploy
8.1 min Second stage engine cutoff 1 (SECO-1)
28.7 min Second stage engine start 2 (SES-2)
29.8 min Second stage engine cutoff 2 (SECO-2)
33.3 min Spacecraft separation
66.7 min Second stage deorbit burn

IXPE’s launch from NASA’s Kennedy Space Center in Florida is now about 40 minutes away. Coverage of launch day activities will continue here on the blog. Also, tune in to NASA Television, the NASA app, or the agency’s website, starting at 12:30 a.m. EST for a live broadcast. Liftoff, from Kennedy’s Launch Complex 39A, is targeted for 1 a.m.