DSP P2 Satellite Bus
Data current as of 2026-07-20.
The DSP P2 bus accounts for 3 cataloged objects, of which 3 are in orbit and 0 are active. Most are built by TRW. The largest operator on this bus is SAMSO. The first launched in 1975, the most recent in 1977.
3
In orbit
0
Active
3
Total launched
0
Reentered
DSP P2 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged DSP P2 satellites.
| Manufacturer | TRW |
|---|---|
| Purpose | Early Warning |
| Launch mass | 1040 kg |
| Dry mass | 980 kg |
| Length | 7.1 m |
| Diameter | 3 m |
| Span | 7.5 m |
| Shape | Cyl + 4 Pan |
| Power | 4 deployable fixed solar arrays, solar cells, batteries |
| Propulsion | MRE-4 |
| Design life | 2 years |
| Equipment | ? |
| Typical orbit | 1433 min period, 2° inclination |
Top operators
SAMSO 3
Top countries
US 3
DSP P2 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| OPS 3151 (DSP 7) DSP F7 | 09803 | 1977-007A | SAMSO | Feb 6, 1977 | 1476 min, 4.6° | Inactive | ◉ |
| OPS 2112 (DSP 6) DSP F6 | 08916 | 1976-059A | SAMSO | Jun 26, 1976 | 1448 min, 3.3° | Inactive | ◉ |
| OPS 3165 (DSP 5) DSP F5 | 08482 | 1975-118A | SAMSO | Dec 14, 1975 | 1433 min, 2.2° | Inactive | ◉ |
Frequently asked questions
How many DSP P2 satellites are there?
The catalog lists 3 objects built on the DSP P2 bus. 3 are in orbit and 0 have reentered.
How many DSP P2 satellites are in orbit?
3 DSP P2 objects are currently in orbit, of which 0 carry an active status.
Who builds the DSP P2 bus?
The DSP P2 bus is most commonly built by TRW.
When did the first DSP P2 satellite launch?
The first cataloged DSP P2 satellite launched in 1975, and the most recent in 1977.