Live coverage: Starlink satellites set for launch today from Kennedy Space Center

Live coverage of the countdown and launch of a SpaceX Falcon 9 rocket from pad 39A at NASA’s Kennedy Space Center in Florida. The mission will launch SpaceX’s next batch of 49 Starlink broadband satellites. Text updates will appear automatically below. Follow us on Twitter.

SpaceX’s third Falcon 9 rocket launch of the week is set to carry 49 more Starlink internet satellites into orbit Thursday from Kennedy Space Center in Florida, continuing the rapid build-out of the company’s commercial broadband network.

Liftoff from launch pad 39A is scheduled for 1:13:20 p.m. EST (1813:20 GMT) to begin a 15-minute sequence to deploy the 49 Starlink satellites into orbit.

You can watch a replay of our live launch coverage on this page beginning at 11:30 a.m. EST (1630 GMT).

The mission, known as Starlink 4-7 on SpaceX’s launch schedule, was delayed from last weekend to wait for two higher-priority Falcon 9 launches. One of those, carrying an Italian radar satellite, suffered a series of delays caused by bad weather and a cruise ship in the downrange launch hazard area.

The Italian radar satellite launched from Cape Canaveral on Monday, and a classified National Reconnaissance Office spy satellite launched on a Falcon 9 rocket Thursday from Vandenberg Space Force Base, California.

The 49 flat-panel Starlink satellites packaged inside the Falcon 9 rocket’s payload fairing for liftoff Thursday will join more than 1,500 operational spacecraft in SpaceX’s global internet network, beaming broadband signals to more than 145,000 subscribers in more than 25 countries.

The satellites each weigh more than a quarter-ton, and were built at SpaceX’s Starlink factory in Redmond, Washington. SpaceX has launched 2,042 Starlink satellites to date, including spacecraft that have failed or already been decommissioned, and the 49 satellites taking off Thursday will bring that number to 2,071.

SpaceX is continuing the deployment of around 4,400 Starlink satellites in five orbital “shells” at slightly different altitudes and at different inclinations, or angles to the equator. The launch Thursday will target an orbital shell at an inclination of 53.2 degrees and an altitude of 335 miles (540 kilometers).

The 229-foot-tall (70-meter) Falcon 9 rocket will head southeast from Kennedy Space Center to deploy the Starlink payloads into orbit. The mission will aim to release the Starlink satellites at T+plus 15 minutes, 31 seconds, into an orbit ranging in altitude between 130 miles and 210 miles (210 by 339 kilometers).

The satellites will unfurl solar arrays and turn on ion thrusters to maneuver into their operational orbit at an 335 miles altitude.

The first stage booster on Thursday’s mission, tail number B1061, will be flying on its sixth mission. SpaceX’s drone ship “A Shortfall of Gravitas” is on station in the Atlantic Ocean near the Bahamas for landing of the first stage booster.

ROCKET: Falcon 9 (B1061.6)

PAYLOAD: 49 Starlink satelllites (Starlink 4-7)

LAUNCH SITE: LC-39A, Kennedy Space Center, Florida

LAUNCH DATE: Feb. 3, 2022

LAUNCH TIME: 1:13:20 p.m. EST (1813:20 GMT)

WEATHER FORECAST: 80% chance of acceptable weather; Moderate risk of unfavorable conditions for booster recovery

BOOSTER RECOVERY: “A Shortfall of Gravitas” drone ship near the Bahamas

LAUNCH AZIMUTH: Southeast

TARGET ORBIT: 210 miles by 130 miles (338 kilometers by 210 kilometers), 53.2 degrees inclination

LAUNCH TIMELINE:

T+00:00: Liftoff T+01:12: Maximum aerodynamic pressure (Max-Q) T+02:32: First stage main engine cutoff (MECO) T+02:36: Stage separation T+02:44: Second stage engine ignition T+02:49: Fairing jettison T+06:48: First stage entry burn ignition (three engines) T+07:08: First stage entry burn cutoff T+08:26: First stage landing burn ignition (one engine) T+08:49: First stage landing T+08:50: Second stage engine cutoff (SECO 1) T+15:31: Starlink satellite separation

MISSION STATS:

140th launch of a Falcon 9 rocket since 2010 148th launch of Falcon rocket family since 2006 6th launch of Falcon 9 booster B1061 123rd Falcon 9 launch from Florida’s Space Coast 138th launch overall from pad 39A 44th SpaceX launch overall from pad 39A 83rd flight of a reused Falcon 9 booster 36th dedicated Falcon 9 launch with Starlink satellites 6th Falcon 9 launch of 2022 6th launch by SpaceX in 2022 6th orbital launch based out of Cape Canaveral in 2022