Live coverage of Delta 4 countdown and launch

The rollout operation on Tuesday followed a day of evaluations using Boeing’s weight and center-of-gravity machine to determine the final measurements on the spacecraft. Launch is still targeting May 6 at 10:34 p.m. EDT (0234 UTC).

SpaceX’s next launch from Cape Canaveral is set for Feb. 24, when a Falcon 9 rocket will carry a commercial television broadcasting satellite aloft for Luxembourg-based SES, the payload’s owner announced Monday.

The U.S. Navy’s Mobile User Objective System communications satellite No. 5 was encapsulated in the payload fairing at Astrotech on June 4 and then hoisted atop the United Launch Alliance Atlas 5 rocket at Complex 41 on June 13.