| Name | Constellation Intruder 1, 2, 3, 4 (NOSS-2 1, 2, 3, 4) |
| ID | noss-2 |
| Country | USA |
| Type | Ocean Surveillance, ELINT |
| Satellites (NORAD) |
20682 (HeavensAbove) 20691 20692 21799 21808 21809 23893 23907 (HeavensAbove) 23908 |
| Satellites (COSPAR) | 1990-0501990-0501990-0501991-0761991-0761991-0761993-F021993-F021993-F021996-0291996-0291996-029 |
| Complementary constellations | noss-1 (Gunter's) noss-1_msd (Gunter's) sldcom (Gunter's) noss-3 (Gunter's) |
| Gunter's space URL | https://space.skyrocket.de/doc_sdat/noss-2.htm |