DMSP Block 5C Satellite Bus
Data current as of 2026-07-21.
The DMSP Block 5C bus accounts for 3 cataloged objects, of which 2 are in orbit and 0 are active. 1 have reentered. Most are built by RCA. The largest operator on this bus is SAMSO. The first launched in 1974, the most recent in 1976.
2
In orbit
0
Active
3
Total launched
1
Reentered
DMSP Block 5C launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged DMSP Block 5C satellites.
| Manufacturer | RCA |
|---|---|
| Purpose | Meteorology |
| Launch mass | 195 kg |
| Dry mass | 195 kg |
| Length | 1.6 m |
| Diameter | 1.3 m |
| Span | 1.6 m |
| Shape | Taper Cyl |
| Power | Solar cells, batteries |
| Propulsion | ? |
| Equipment | ? |
| Typical orbit | 101 min period, 99° inclination |
Top operators
SAMSO 3
Top countries
US 3
DMSP Block 5C satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| OPS 5140 (DMSP 5C F8) DMSP 11534 | 08696 | 1976-016A | SAMSO | Feb 19, 1976 | 89 min, 98.9° | Reentered | ◉ |
| OPS 6226 (DMSP 5C F7) DMSP 10533 | 07816 | 1975-043A | SAMSO | May 24, 1975 | 101 min, 98.6° | Inactive | ◉ |
| OPS 6983 (DMSP 5B F6) DMSP 9532 | 07411 | 1974-063A | SAMSO | Aug 9, 1974 | 101 min, 98.5° | Inactive | ◉ |
Frequently asked questions
How many DMSP Block 5C satellites are there?
The catalog lists 3 objects built on the DMSP Block 5C bus. 2 are in orbit and 1 have reentered.
How many DMSP Block 5C satellites are in orbit?
2 DMSP Block 5C objects are currently in orbit, of which 0 carry an active status.
Who builds the DMSP Block 5C bus?
The DMSP Block 5C bus is most commonly built by RCA.
When did the first DMSP Block 5C satellite launch?
The first cataloged DMSP Block 5C satellite launched in 1974, and the most recent in 1976.