UoSAT Satellite Bus
Data current as of 2026-07-20.
The UoSAT bus accounts for 14 cataloged objects, of which 13 are in orbit and 0 are active. 1 have reentered. Most are built by SSTL. The largest operator on this bus is SSTL. The first launched in 1981, the most recent in 1999.
13
In orbit
0
Active
14
Total launched
1
Reentered
UoSAT launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged UoSAT satellites.
| Manufacturer | SSTL |
|---|---|
| Purpose | Earth observation, technology |
| Launch mass | 50 kg |
| Dry mass | 50 kg |
| Length | 0.6 m |
| Diameter | 0.4 m |
| Span | 6.5 m |
| Shape | Box + Ant |
| Power | Solar cells, batteries |
| Propulsion | None |
| Equipment | see above |
| Typical orbit | 101 min period, 99° inclination |
Top operators
Top countries
UK 5 F 3 KR 2 CL 1 P 1 T 1 US 1
UoSAT satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| CLEMENTINE Clementine | 25978 | 1999-064B | CNES/DGA | Dec 3, 1999 | 93 min, 98.1° | Inactive | ◉ |
| TMSAT-1 (TO-31) Thai-OSCAR-31 | 25396 | 1998-043C | TMSAT | Jul 10, 1998 | 101 min, 99.0° | Inactive | ◉ |
| FASAT B Fasat-Bravo | 25395 | 1998-043B | FACH | Jul 10, 1998 | 101 min, 99.0° | Inactive | ◉ |
| CERISE CERISE | 23606 | 1995-033B | CNES/DGA | Jul 7, 1995 | 94 min, 98.3° | Inactive | ◉ |
| POSAT 1 POSAT-OSCAR-28 | 22829 | 1993-061G | INETI | Sep 26, 1993 | 101 min, 98.7° | Inactive | ◉ |
| KITSAT B (KO-25) Kitsat-OSCAR-25 | 22828 | 1993-061F | KAIST | Sep 26, 1993 | 101 min, 98.7° | Inactive | ◉ |
| ITAMSAT (IO-26) Healthsat 2 | 22826 | 1993-061D | SATEL | Sep 26, 1993 | 101 min, 98.7° | Inactive | ◉ |
| S80/T S80/T | 22078 | 1992-052C | CNES | Aug 10, 1992 | 112 min, 66.1° | Inactive | ◉ |
| KITSAT A (KO-23) Kitsat-OSCAR-23 | 22077 | 1992-052B | KAIST | Aug 10, 1992 | 112 min, 66.1° | Inactive | ◉ |
| UOSAT 5 (UO-22) UoSAT-OSCAR-22 | 21575 | 1991-050B | SSTL | Jul 17, 1991 | 100 min, 98.3° | Inactive | ◉ |
| UOSAT 4 (UO-15) UoSAT-OSCAR-15 | 20438 | 1990-005C | SSTL | Jan 22, 1990 | 101 min, 98.8° | Inactive | ◉ |
| UOSAT 3 (UO-14) UoSAT-OSCAR-14 | 20437 | 1990-005B | SSTL | Jan 22, 1990 | 100 min, 98.8° | Inactive | ◉ |
| UOSAT 2 (UO-11) UoSAT-OSCAR-11 | 14781 | 1984-021B | UOS | Mar 1, 1984 | 97 min, 97.8° | Inactive | ◉ |
| UOSAT 1 (UO-9) UoSAT-OSCAR-9 | 12888 | 1981-100B | UOS | Oct 6, 1981 | 87 min, 97.5° | Reentered | ◉ |
Frequently asked questions
How many UoSAT satellites are there?
The catalog lists 14 objects built on the UoSAT bus. 13 are in orbit and 1 have reentered.
How many UoSAT satellites are in orbit?
13 UoSAT objects are currently in orbit, of which 0 carry an active status.
Who builds the UoSAT bus?
The UoSAT bus is most commonly built by SSTL.
When did the first UoSAT satellite launch?
The first cataloged UoSAT satellite launched in 1981, and the most recent in 1999.