NOSS-3 Satellite Bus
Data current as of 2026-07-20.
The NOSS-3 bus accounts for 19 cataloged objects, of which 19 are in orbit and 9 are active. Most are built by LMSSD. The largest operator on this bus is National Reconnaissance Office. The first launched in 2001, the most recent in 2025.
19
In orbit
9
Active
19
Total launched
0
Reentered
NOSS-3 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged NOSS-3 satellites.
| Manufacturer | LMSSD |
|---|---|
| Purpose | Ocean Surveillance, ELINT |
| Launch mass | 1000 kg |
| Dry mass | 1000 kg |
| Length | 2 m |
| Diameter | 2 m |
| Span | 2 m |
| Shape | Cyl |
| Power | Solar arrays, batteries |
| Propulsion | ? |
| Equipment | ? |
| Typical orbit | 107 min period, 63° inclination |
Top operators
Top countries
US 19
NOSS-3 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| USA 570 | 66992 | · | NROC/USN | Dec 9, 2025 | · | Active | ◉ |
| USA 498 | 63350 | · | NROC/USN | Mar 24, 2025 | · | Active | ◉ |
| USA 327 USA 327 | 52259 | 2022-040A | NROC/USN | Apr 17, 2022 | 107 min, 63.4° | Active | ◉ |
| USA 274 DEB USA 274 P/L 2 | 42065 | 2017-011B | NROC/USN | Mar 1, 2017 | 107 min, 63.4° | Inactive | ◉ |
| USA 274 USA 274 | 42058 | 2017-011A | NROC/USN | Mar 1, 2017 | 107 min, 63.4° | Active | ◉ |
| USA 264 DEB USA 264 P/L 2 | 40981 | 2015-058R | NROC/USN | Oct 8, 2015 | 107 min, 63.4° | Inactive | ◉ |
| USA 264 USA 264 | 40964 | 2015-058A | NROC/USN | Oct 8, 2015 | 107 min, 63.4° | Active | ◉ |
| USA 238 DEB USA 238 P/L 2 | 38773 | 2012-048P | NROC/USN | Sep 13, 2012 | 107 min, 63.4° | Inactive | ◉ |
| USA 238 USA 238 | 38758 | 2012-048A | NROC/USN | Sep 13, 2012 | 107 min, 63.4° | Active | ◉ |
| USA 229 DEB USA 229 P/L 2 | 37391 | 2011-014B | NROC/USN | Apr 15, 2011 | 107 min, 63.4° | Inactive | ◉ |
| USA 229 USA 229 | 37386 | 2011-014A | NROC/USN | Apr 15, 2011 | 107 min, 63.4° | Active | ◉ |
| USA 194 DEB USA 194 P/L 2 | 31708 | 2007-027C | NROC/USN | Jun 15, 2007 | 107 min, 63.4° | Inactive | ◉ |
| USA 194 USA 194 | 31701 | 2007-027A | NROC/USN | Jun 15, 2007 | 107 min, 63.4° | Active | ◉ |
| USA 181 DEB USA-181 P/L 2 | 28541 | 2005-004C | NROC/USN | Feb 3, 2005 | 107 min, 63.4° | Inactive | ◉ |
| USA 181 USA 181 | 28537 | 2005-004A | NROC/USN | Feb 3, 2005 | 107 min, 63.4° | Active | ◉ |
| USA 173 DEB USA 173 P/L 2 | 28097 | 2003-054C | NROC/USN | Dec 2, 2003 | 107 min, 63.4° | Inactive | ◉ |
| USA 173 USA 173 | 28095 | 2003-054A | NROC/USN | Dec 2, 2003 | 107 min, 63.4° | Inactive | ◉ |
| USA 160 DEB USA 160 P/L 2 | 26907 | 2001-040C | NROC/USN | Sep 8, 2001 | 107 min, 63.4° | Inactive | ◉ |
| USA 160 USA 160 | 26905 | 2001-040A | NROC/USN | Sep 8, 2001 | 107 min, 63.4° | Inactive | ◉ |
Frequently asked questions
How many NOSS-3 satellites are there?
The catalog lists 19 objects built on the NOSS-3 bus. 19 are in orbit and 0 have reentered.
How many NOSS-3 satellites are in orbit?
19 NOSS-3 objects are currently in orbit, of which 9 carry an active status.
Who builds the NOSS-3 bus?
The NOSS-3 bus is most commonly built by LMSSD.
When did the first NOSS-3 satellite launch?
The first cataloged NOSS-3 satellite launched in 2001, and the most recent in 2025.