United Launch Alliance OTV-4 (X-37B) (USA 261) (AFSPC-5) & ULTRASat cubesat deployer Atlas V 501
Rocket Launch Video Stream
About the OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer Mission
| Type | Government/Top Secret |
|---|---|
| Orbit | Low Earth Orbit |
| Launch Cost | $120,000,000 |
It is the second flight of the second Boeing X-37B vehicle and the fourth flight of the program. United States Air Force Orbital Test Vehicle is an unmanned 5000 kg, 8.8 m-long reusable mini-spaceplane capable of autonomous re-entry and landing. The OTV-4 mission was to test Aerojet Rocketdyne's XR-5A Hall-effect thruster and conduct a NASA investigation for testing various materials in space. The mission concluded after 717 days in orbit, marking the first time X-37B landed on the Shuttle Landing Facility at the Kennedy Space Center.
Launch Pad & Location
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
| Launches | 124 |
|---|---|
| Orbital Launch Attempts | 124 |
| Total Launches | 1111 |
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
United Launch Alliance Atlas V 501 Rocket
Atlas V with 5m Fairing, 0 SRB, 1 Centaur upper stage engine.
| Length | 58.3 m |
|---|---|
| Diameter | 3.8 m |
| Stages | 1-2 |
| Launch Mass | 334.0 T |
| Takeoff Thrust | 3,827.0 kN |
| Apogee | 40,000.0 km |
| LEO Capacity | 8,210 kg |
| GTO Capacity | 3,780 kg |
| Launch Cost | $120,000,000 |
| Maiden Flight | 4/22/2010 |
Learn more about the United Launch Alliance Atlas V 501 Rocket
About United Launch Alliance
United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
| Total Launches | 174 |
|---|---|
| Successful | 174 |
| Pending | 37 |
| Consecutive Success | 174 |
Frequently Asked Questions
When was the United Launch Alliance Atlas V 501 OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer launch scheduled?
The United Launch Alliance Atlas V 501 OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer launch was scheduled for:
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Where can I watch the United Launch Alliance Atlas V 501 OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer launch video?
You can watch the United Launch Alliance Atlas V 501 launch video on this page. The official video includes full mission coverage with multiple camera angles, onboard views, and expert commentary covering pre-launch procedures, liftoff, stage separation, and payload deployment.
Where did the United Launch Alliance Atlas V 501 OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer mission launch from?
The United Launch Alliance Atlas V 501 rocket launched from Space Launch Complex 41 at Cape Canaveral SFS, FL, USA. Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
What rocket was used for the OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer mission?
The OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer mission launched aboard a United Launch Alliance Atlas V 501 rocket. Atlas V with 5m Fairing, 0 SRB, 1 Centaur upper stage engine. Detailed rocket specifications and performance data are available in the rocket details above.
What weather conditions could have delayed the United Launch Alliance Atlas V 501 OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer launch?
The United Launch Alliance Atlas V 501 OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer launch could have been delayed by various weather conditions including lightning within 10 nautical miles, high winds (especially upper-level winds), thick cloud layers, precipitation, and poor visibility. Weather must be favorable at the launch site, downrange landing zones, and abort landing sites.
How can I get updates if the United Launch Alliance Atlas V 501 OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer launch was delayed?
This page was updated in real-time with the latest United Launch Alliance Atlas V 501 launch status, including any delays or scrubs for the OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer mission. You can also check our space launch schedule for historical launch information. Our mobile app provides push notifications for instant alerts about launch status changes. Official United Launch Alliance live streams provided the most immediate range updates during the launch window.
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