USAF SMC/DoD Space Test Program
18 satellites in orbit, 8 operating.
The count is the catalogue’s as of Nov 8, 2026, 4:17 PM; whether a satellite is operating is as Orbinauts writes it where it has written when the satellite’s mission ended, and otherwise as Jonathan McDowell’s general catalogue believes it, licensed CC BY 4.0: GCAT
USAF SMC/DoD Space Test Program is how GCAT, Jonathan McDowell’s general catalogue (CC BY 4.0), names the organisation under the code STP, of United States of America. This page gathers the satellites it flies and those of every organisation under it, each row naming the organisation that flies it. It is part of United States Air Force. See every satellite of United States Air Force.
The live map has no filter that picks out exactly these satellites.
| Satellite | Kind | Orbit class | Launched | Operating | Flown by |
|---|---|---|---|---|---|
| STPSAT-7 | Not known | Low Earth orbit | Yes | ||
| DISKSAT A | Not known | Low Earth orbit | Yes | ||
| DISKSAT D | Not known | Low Earth orbit | Yes | ||
| DISKSAT B | Not known | Low Earth orbit | Yes | ||
| DISKSAT C | Not known | Low Earth orbit | Yes | ||
| STPSAT-6 | Not known | Geostationary | Yes | ||
| MONOLITH | Not known | Low Earth orbit | Yes | ||
| STPSAT-5 | Not known | Low Earth orbit | Ended | ||
| TSX-5 | Not known | Low Earth orbit | Ended | ||
| FORTE | Not known | Low Earth orbit | Yes | ||
| REX 2 | Not known | Low Earth orbit | Ended | ||
| STEP 2 | Not known | Low Earth orbit | Ended | ||
| ALEXIS | Space telescope | Low Earth orbit | Ended | ||
| POLAR BEAR | Not known | Low Earth orbit | Ended | ||
| HILAT | Not known | Low Earth orbit | Ended | ||
| SCATHA | Not known | Inclined geosynchronous | Ended | ||
| P 76-5 | Navigation satellite | Low Earth orbit | Ended | ||
| ASTEX 1 | Not known | Low Earth orbit | Ended |