Satellite constellations
11 major constellations tracked. Live counts refresh every 3 hours from CelesTrak. Compare any two head-to-head via the constellation pages below.
- StarlinkUSSpaceXSpaceX broadband mega-constellation in LEO. Currently the largest constellation ever flown.
- OneWebGBEutelsat OneWebBroadband LEO constellation operated by Eutelsat OneWeb after the 2023 merger.
- Planet (Dove / SuperDove)USPlanet LabsPlanet Labs cubesat Earth-imaging fleet — daily imagery of every spot on Earth.
- Iridium NEXTUSIridium CommunicationsSecond-generation Iridium constellation; 66 active sats provide global comms.
- SESLUSESGlobal GEO + MEO (O3b) comms fleet.
- IntelsatUSIntelsatGlobal GEO comms fleet. ~50 active satellites.
- BeiDouCNCNSAChinese navigation constellation. Mix of MEO, GEO, and IGSO.
- GPS (Global Positioning System)USUS Space ForceUS satellite navigation constellation. ~31 active sats in MEO at ~20,200 km.
- GalileoEUEuropean Union (GSA)European satellite navigation. ~28 active sats in MEO at ~23,222 km.
- GLONASSRURoscosmosRussian satellite navigation system. ~24 active sats in MEO at ~19,100 km.
- GOESUSNOAAGeostationary Operational Environmental Satellites — NOAA weather/storm tracking.