TRS Satellite Bus
Data current as of 2026-07-20.
The TRS bus accounts for 3 cataloged objects, of which 2 are in orbit and 0 are active. 1 have reentered. Most are built by TRW. The largest operator on this bus is AFSSD. All were launched in 1963.
2
In orbit
0
Active
3
Total launched
1
Reentered
TRS launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged TRS satellites.
| Manufacturer | TRW |
|---|---|
| Purpose | Experimental |
| Launch mass | 1 kg |
| Dry mass | 1 kg |
| Length | 0.2 m |
| Diameter | 0.2 m |
| Span | 0.2 m |
| Shape | Tetrahedron |
| Power | Solar cells |
| Propulsion | None |
| Equipment | various: see above |
| Typical orbit | 166 min period, 87° inclination |
Top operators
AFSSD 3
Top countries
US 3
TRS satellites
Track any of them live in KeepTrack.
Frequently asked questions
How many TRS satellites are there?
The catalog lists 3 objects built on the TRS bus. 2 are in orbit and 1 have reentered.
How many TRS satellites are in orbit?
2 TRS objects are currently in orbit, of which 0 carry an active status.
Who builds the TRS bus?
The TRS bus is most commonly built by TRW.
When did the first TRS satellite launch?
The cataloged TRS satellites all launched in 1963.