Constellations
Satellite constellations
5 constellations tracked in this selection, ranked by active satellites. The 5 shown on this page account for 743 active satellites. Membership is derived from curated name patterns and CelesTrak groups — see the methodology.
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| # | Constellation | Operator | Service | Orbit | Active | On orbit | Total | 365 d | 30 d | Activity derived | Median perigee | First launch | Last launch |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | USA (classified US military payloads)US | National Reconnaissance Office | Military | MIXED | 393 | 486 | 498 | 79 | 23 | 7.9 | 575 km | 25 Jun 1984 | 16 Aug 2026 |
| 2 | YaoganCN | China military / Yaogan programme | Military | LEO | 164 | 164 | 173 | 4 | 0 | 0.2 | 555 km | 25 May 2007 | 15 Mar 2026 |
| 3 | Kosmos (Russian military / government)RU | Russian Ministry of Defence | Military | MIXED | 118 | 1,024 | 2,465 | 23 | 0 | 1.9 | 919 km | 16 Mar 1962 | 23 Apr 2026 |
| 4 | Praetorian (Firefly / military rideshare)US | United States Space Force | Military | LEO | 42 | 42 | 42 | 21 | 0 | 5.0 | 937 km | 10 Sept 2025 | 16 Jul 2026 |
| 5 | TJS (Tongxin Jishu Shiyan)CN | People's Liberation Army (Strategic Support Force) | Military | GEO | 26 | 27 | 27 | 9 | 0 | 3.5 | 35,770 km | 12 Sept 2015 | 30 Jul 2026 |
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