Constellations

Satellite constellations

2 constellations tracked in this selection, ranked by active satellites. The 2 shown on this page account for 511 active satellites. Membership is derived from curated name patterns and CelesTrak groups — see the methodology.

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Growth 365 d
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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	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

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