NOSS B Satellite Bus
Data current as of 2026-07-20.
The NOSS B bus accounts for 3 cataloged objects, of which 3 are in orbit and 1 are active. Most are built by NRL. The largest operator on this bus is National Reconnaissance Office. The first launched in 1990, the most recent in 1996.
3
In orbit
1
Active
3
Total launched
0
Reentered
NOSS B launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged NOSS B satellites.
| Manufacturer | NRL |
|---|---|
| Purpose | Communication |
| Launch mass | 3000 kg |
| Dry mass | 3000 kg |
| Length | 3 m |
| Diameter | 4 m |
| Span | 4 m |
| Shape | Cyl |
| Propulsion | AJ-23-153 ? |
| Equipment | UHF transponder |
| Typical orbit | 107 min period, 63° inclination |
Top operators
National Reconnaissance Office 2 NROC/NRL 1
Top countries
US 3
NOSS B satellites
Track any of them live in KeepTrack.
Frequently asked questions
How many NOSS B satellites are there?
The catalog lists 3 objects built on the NOSS B bus. 3 are in orbit and 0 have reentered.
How many NOSS B satellites are in orbit?
3 NOSS B objects are currently in orbit, of which 1 carry an active status.
Who builds the NOSS B bus?
The NOSS B bus is most commonly built by NRL.
When did the first NOSS B satellite launch?
The first cataloged NOSS B satellite launched in 1990, and the most recent in 1996.