 Launch of OTV-8 | |
| Mission type | Classified |
|---|---|
| Operator | U.S. Space Force |
| COSPAR ID | 2025-183A |
| SATCAT no. | 65271  |
| Spacecraft properties | |
| Spacecraft type | Boeing X-37B |
| Manufacturer | Boeing |
| Launch mass | [1] |
| Power | Deployable solar array, batteries [1] |
| Start of mission | |
| Launch date | August 21, 2025 |
| Rocket | Falcon 9 Block 5 B1092-6 |
| Launch site | Kennedy, LC-39A |
| Contractor | SpaceX |
| Orbital parameters | |
| Reference system | Low Earth |
| Perigee altitude | 323 km (201 mi) |
| Apogee altitude | 38,838 km (24,133 mi) |
OTV program | |
Orbital Test Vehicle 8 (OTV-8), also referred to as United States Space Force-36 (USSF-36) or USA-555, is the fourth flight of the first Boeing X-37B, an American unmanned vertical-takeoff, horizontal-landing spaceplane. It was launched to a low Earth orbit (LEO) aboard a Falcon 9 Block 5 rocket (for the first time) from LC-39A on August 21, 2025. [2]
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The spaceplane is operated by the United States Space Force, which considers the mission classified and as such has not revealed the objectives. [3]