Prowler (satellite)
| Mission type | Satellite inspection |
|---|---|
| Operator | US NRO |
| COSPAR ID | N/A |
| SATCAT no. | N/A |
| Spacecraft properties | |
| Bus | HS-376 |
| Manufacturer | Hughes |
| Launch mass | 1,300 kilograms (2,900 lb) |
| Start of mission | |
| Launch date | 15 November 1990, 23:48:13 UTC |
| Rocket | Space Shuttle Atlantis STS-38 / PAM-D |
| Launch site | Kennedy LC-39A |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Near-geosynchronous |
Prowler was an American reconnaissance satellite launched aboard Space Shuttle Atlantis in 1990 to study Soviet satellites in geosynchronous orbit. The government of the United States has never acknowledged its existence, however it has been identified by amateur observers and through leaked information.