June 24 (UPI) -- NASA, SpaceX and Axiom Space are targeting an early Wednesday launch window for their Axiom-4 mission launch that will take four astronauts, on what will be the fourth private commercial mission, to the International Space Station.

Ax-4 is scheduled to lift off at 2:31 a.m. EDT on Wednesday from Launch Complex 39A at NASA's Kennedy Space Center in Florida. A backup launch window will also be available at 2:09 a.m. on Thursday.

"All systems are looking good for Wednesday's launch of Axiom Space's Ax-4 mission to the Space Station and weather is 90% favorable for liftoff," SpaceX wrote Tuesday in a post on X.

All systems are looking good for Wednesday's launch of @Axiom_Space's Ax-4 mission to the @Space_Station and weather is 90% favorable for liftoff. Webcast starts at 12:30 a.m. ET → https://t.co/6RXoybzInV pic.twitter.com/988o685PVF— SpaceX (@SpaceX) June 24, 2025

The Axiom-4 astronauts include Pilot Shubhanshu Shukla from India, Commander Peggy Whitson from the United States and Mission Specialists Slawosz Uzanański-Wiśniewksi from Poland and Tibor Kapu from Hungary.