Ministar Satellite Bus
Data current as of 2026-07-20.
The Ministar bus accounts for 9 cataloged objects, of which 9 are in orbit and 0 are active. Most are built by DSI. The largest operator on this bus is AFSSD2. The first launched in 1990, the most recent in 1999.
9
In orbit
0
Active
9
Total launched
0
Reentered
Ministar launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged Ministar satellites.
| Manufacturer | DSI |
|---|---|
| Purpose | Technology |
| Launch mass | 70 kg |
| Dry mass | 70 kg |
| Length | 0.4 m |
| Diameter | 0.6 m |
| Span | 6.1 m |
| Shape | Cyl + Ant |
| Power | Solar cells, batteries |
| Propulsion | None |
| Design life | 1 year (design); 3 years (goal) |
| Equipment | see above |
| Typical orbit | 98 min period, 90° inclination |
Top operators
Top countries
US 9
Ministar satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| ACRIMSAT ACRIMSAT | 26033 | 1999-070B | JPL | Dec 21, 1999 | 98 min, 98.3° | Inactive | ◉ |
| REX 2 REX II | 23814 | 1996-014A | STP | Mar 9, 1996 | 101 min, 90.0° | Inactive | ◉ |
| RADCAL RADCAL | 22698 | 1993-041A | WSMC | Jun 25, 1993 | 101 min, 89.5° | Inactive | ◉ |
| REX 1 REX | 21527 | 1991-045A | AFROM | Jun 29, 1991 | 101 min, 89.5° | Inactive | ◉ |
| MACSAT 2 (M 2) MACSAT 2 | 20608 | 1990-043B | DARPA | May 9, 1990 | 97 min, 89.8° | Inactive | ◉ |
| MACSAT 1 (M 1) MACSAT 1 | 20607 | 1990-043A | DARPA | May 9, 1990 | 98 min, 89.8° | Inactive | ◉ |
| USA 58 SCE | 20562 | 1990-031C | AFSSD2/USN | Apr 11, 1990 | 98 min, 89.9° | Inactive | ◉ |
| USA 57 TEX | 20561 | 1990-031B | AFSSD2 | Apr 11, 1990 | 98 min, 89.9° | Inactive | ◉ |
| USA 56 POGS | 20560 | 1990-031A | AFSSD2 | Apr 11, 1990 | 97 min, 89.9° | Inactive | ◉ |
Frequently asked questions
How many Ministar satellites are there?
The catalog lists 9 objects built on the Ministar bus. 9 are in orbit and 0 have reentered.
How many Ministar satellites are in orbit?
9 Ministar objects are currently in orbit, of which 0 carry an active status.
Who builds the Ministar bus?
The Ministar bus is most commonly built by DSI.
When did the first Ministar satellite launch?
The first cataloged Ministar satellite launched in 1990, and the most recent in 1999.