ST5 Satellite Bus
Data current as of 2026-07-20.
The ST5 bus accounts for 3 cataloged objects, of which 2 are in orbit and 0 are active. 1 have reentered. Most are built by GSFC. The largest operator on this bus is NASA. All were launched in 2006.
2
In orbit
0
Active
3
Total launched
1
Reentered
ST5 launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged ST5 satellites.
| Manufacturer | GSFC |
|---|---|
| Purpose | Technology |
| Launch mass | 25 kg |
| Dry mass | 25 kg |
| Length | 0.5 m |
| Diameter | 0.5 m |
| Span | 1 m |
| Shape | Oct Cyl + Ant |
| Power | Solar cells, batteries |
| Propulsion | Cold Gas Microthrusters |
| Design life | 90 days |
| Equipment | see above |
| Typical orbit | 101 min period, 105° inclination |
Top operators
Top countries
US 3
ST5 satellites
Track any of them live in KeepTrack.
Frequently asked questions
How many ST5 satellites are there?
The catalog lists 3 objects built on the ST5 bus. 2 are in orbit and 1 have reentered.
How many ST5 satellites are in orbit?
2 ST5 objects are currently in orbit, of which 0 carry an active status.
Who builds the ST5 bus?
The ST5 bus is most commonly built by GSFC.
When did the first ST5 satellite launch?
The cataloged ST5 satellites all launched in 2006.