Mars SA Satellite Bus
Data current as of 2026-07-20.
The Mars SA bus accounts for 4 cataloged objects, of which 1 are in orbit and 0 are active. 3 have reentered. Most are built by NPOL. The largest operator on this bus is IKI/NPOL. The first launched in 1971, the most recent in 1973.
1
In orbit
0
Active
4
Total launched
3
Reentered
Mars SA launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged Mars SA satellites.
| Manufacturer | NPOL |
|---|---|
| Launch mass | 645 kg |
| Dry mass | 645 kg |
| Length | 1.2 m |
| Diameter | 1.2 m |
| Span | 2 m |
| Shape | Ell + 2 Petal |
Top operators
IKI/NPOL 4
Top countries
SU 4
Mars SA satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| MARS 7 DESCENT CRAFT SA Marsa-7 | 07224 | · | IKI/NPOL | Aug 9, 1973 | · | Inactive | ◉ |
| MARS 6 DESCENT CRAFT SA Marsa-6 | 07223 | · | IKI/NPOL | Aug 5, 1973 | · | Reentered | ◉ |
| MARS 2 CAPSULE SA Marsa-2 | 05739 | · | IKI/NPOL | May 19, 1971 | · | Reentered | ◉ |
| MARS 3 DESCENT CRAFT SA Marsa-3 | 05667 | · | IKI/NPOL | May 28, 1971 | · | Reentered | ◉ |
Frequently asked questions
How many Mars SA satellites are there?
The catalog lists 4 objects built on the Mars SA bus. 1 are in orbit and 3 have reentered.
How many Mars SA satellites are in orbit?
1 Mars SA objects are currently in orbit, of which 0 carry an active status.
Who builds the Mars SA bus?
The Mars SA bus is most commonly built by NPOL.
When did the first Mars SA satellite launch?
The first cataloged Mars SA satellite launched in 1971, and the most recent in 1973.