Manifest / 01Go
Unknown Payload
Long March 6C
ProviderChina Aerospace Science and Technology Corporation
PadLaunch Complex 9A
DateAug 25, 2026
PrecisionAbout 03:20 AM UTC
Schedule watchTracking updates
T– about 19hWindow opens 03:15 AM UTC
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Success
OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer
Atlas V 501United Launch AllianceSpace Launch Complex 41
Wednesday, May 20, 2015 · 03:05 PM UTC
This mission is complete.
Mission Brief
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.
PayloadOTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer
OrbitLow Earth Orbit
CustomerUnited Launch Alliance
Stages2
PadSpace Launch Complex 41, Cape Canaveral SFS, FL, USA
Mission Timeline
30 / 30100%Ground vector
Launch site
Site locked
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
Global range
- Latitude
- 28.583°N
- Longitude
- 80.583°W
Range Weather
Launch commit criteria
Clear
Watch
TrackingNo active constraints
Weather Rules
Tracking no weather issues at this time.
- Primary concern
- No weather issues
- Rule count
- 0
- Temperature
- Not reported
- Surface wind
- Not reported
Window
01:00 PM UTC - 05:00 PM UTC
Provider
United Launch Alliance
Profile →USA • Founded 2006
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 spa...
Schedule History
No meaningful launch-time or status changes recorded.
