United States Navy

95 satellites in orbit, 15 operating.

The count is the catalogue’s as of Nov 8, 2026, 4:17 PM; whether a satellite is operating is as Orbinauts writes it where it has written when the satellite’s mission ended, and otherwise as Jonathan McDowell’s general catalogue believes it, licensed CC BY 4.0: GCAT

United States Navy is how GCAT, Jonathan McDowell’s general catalogue (CC BY 4.0), names the organisation under the code USN, of United States of America. This page gathers the satellites it flies and those of every organisation under it, each row naming the organisation that flies it.

SatelliteKindOrbit classLaunchedOperatingFlown by
Vanguard 1, the polished 16-centimetre sphere with six antennas, being fitted to its rocket by a team of Naval Research Laboratory scientists in 1958.
Photograph: US Naval Research Laboratory (public domain)
Vanguard 1
PioneerMedium Earth orbitEndedNaval Research Lab
SPEAR-1ANot knownLow Earth orbitYesNaval Research Lab
SPEAR-1CNot knownLow Earth orbitYesNaval Research Lab
SPEAR-1BNot knownLow Earth orbitYesNaval Research Lab
OTTERNot knownLow Earth orbitYesUS Naval Postgraduate School
MOLANot knownLow Earth orbitYesUS Naval Postgraduate School
NPSAT1Not knownLow Earth orbitEndedUS Naval Postgraduate School
SPAWAR-CAL-ORNot knownLow Earth orbitEndedSpace and Naval Warfare Systems Command, Space Field Activity
SPAWAR-CAL-RNot knownLow Earth orbitEndedSpace and Naval Warfare Systems Command, Space Field Activity
SPAWAR-CAL-ONot knownLow Earth orbitEndedSpace and Naval Warfare Systems Command, Space Field Activity
MUOS 5Communications satelliteMedium Earth orbitYesSpace and Naval Warfare Systems Command, San Diego
PROPCUBE 1Not knownLow Earth orbitYesUS Naval Postgraduate School
PROPCUBE 3Not knownLow Earth orbitYesUS Naval Postgraduate School
MUOS 4Communications satelliteGeostationaryYesSpace and Naval Warfare Systems Command, San Diego
MUOS 3Communications satelliteGeostationaryYesSpace and Naval Warfare Systems Command, San Diego
MUOS 2Communications satelliteInclined geosynchronousYesSpace and Naval Warfare Systems Command, San Diego
MUOS 1Communications satelliteInclined geosynchronousYesSpace and Naval Warfare Systems Command, San Diego
TACSAT 4Communications satelliteHighly elliptical orbitEndedNaval Research Lab
UFO 11 (USA 174)Communications satelliteInclined geosynchronousYesSPAWAR PMW 146 Com Sat Program Office
SAPPHIRENot knownLow Earth orbitEndedUS Naval Academy
PCSATCommunications satelliteLow Earth orbitYesUS Naval Academy
UFO 10 (USA 146)Communications satelliteInclined geosynchronousYesSPAWAR PMW 146 Com Sat Program Office
UFO 9 (USA 140)Communications satelliteInclined geosynchronousEndedSPAWAR PMW 146 Com Sat Program Office
UFO 8 (USA 138)Communications satelliteInclined geosynchronousEndedSPAWAR PMW 146 Com Sat Program Office
UFO 6 (USA 114)Communications satelliteInclined geosynchronousEndedSPAWAR PMW 146 Com Sat Program Office
UFO 5 (USA 111)Communications satelliteInclined geosynchronousEndedSPAWAR PMW 146 Com Sat Program Office
FLTSATCOM 8 (USA 46)Communications satelliteInclined geosynchronousEndedSpace and Naval Warfare Systems Command, Space Field Activity
OSCAR 31Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OSCAR 25Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
NOVA 2Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OSCAR 32Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OSCAR 23Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OSCAR 29Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OSCAR 27Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
FLTSATCOM 7 (USA 20)Communications satelliteInclined geosynchronousEndedNavy Electronic Systems Command
OSCAR 24Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OSCAR 30Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
GEOSATEarth-watching satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
NOVA 3Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
SSDNot knownLow Earth orbitEndedNaval Research Lab
FLTSATCOM 5Communications satelliteInclined geosynchronousEndedNavy Electronic Systems Command
NOVA 1Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OPS 6394 (FLTSATCOM 4)Communications satelliteInclined geosynchronousEndedNavy Electronic Systems Command
OPS 6393 (FLTSATCOM 3)Communications satelliteInclined geosynchronousEndedNavy Electronic Systems Command
OPS 6392 (FLTSATCOM 2)Communications satelliteInclined geosynchronousEndedNavy Electronic Systems Command
OPS 6391 (FLTSATCOM 1)Communications satelliteInclined geosynchronousEndedNavy Electronic Systems Command
TRANSATNavigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
SOLRAD 11ASpace telescopeMedium Earth orbitEndedNaval Research Lab
NNSS 20 (TRANSIT 20)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
TRIAD 1Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
NNSS 19 (TRANSIT 19)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
TIMATION 2Navigation satelliteLow Earth orbitEndedNaval Research Lab
OPS 7613 (P/L 1)Not knownLow Earth orbitEndedNaval Research Lab
TEMPSAT 2Not knownLow Earth orbitEndedNaval Research Lab
SOICAL (CONE)Not knownLow Earth orbitEndedNaval Research Lab
OPS 7034 (TRANSIT 18)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OPS 4947 (TRANSIT 17)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
DODGE 1Not knownMedium Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
AURORA 1Not knownMedium Earth orbitEndedOffice of Naval Research
SURCAL 159Not knownLow Earth orbitEndedNaval Research Lab
TIMATION 1Navigation satelliteLow Earth orbitEndedNaval Research Lab
OPS 5712 (P/L 160)Not knownLow Earth orbitEndedNaval Research Lab
OPS 7218 (TRANSIT 16)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OPS 0100 (TRANSIT 15)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OPS 2366 (TRANSIT 14)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OPS 0082 (TRANSIT 13)Navigation satelliteLow Earth orbitEndedUSN Naval Air Systems Command (NAVAIR)
OPS 1117 (TRANSIT 12)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
OPS 1593 (TRANSIT 11)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
OPS 1509 (TRANSIT 10)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
EXPLORER 30Space telescopeLow Earth orbitEndedNaval Research Lab
PORCUPINE 2Not knownLow Earth orbitEndedNaval Research Lab
CALSPHERE 4(A)Not knownLow Earth orbitEndedNaval Research Lab
NAVSPASUR ROD 1Not knownLow Earth orbitEndedNaval Research Lab
OPS 8464 (TRANSIT 5B-7)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
TEMPSAT 1Not knownLow Earth orbitEndedNaval Research Lab
DODECAPOLE 2Not knownLow Earth orbitEndedNaval Research Lab
OPS 8480 (TRANSIT 5B-6)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
PORCUPINE 1Not knownLow Earth orbitEndedNaval Research Lab
OPS 6582 (TRANSIT 5B-5)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
OPS 6582 (TRANSIT 5E-5)Space telescopeLow Earth orbitEndedBureau of Naval Weapons, US Navy
CALSPHERE 2Not knownLow Earth orbitEndedNaval Research Lab
CALSPHERE 1Not knownLow Earth orbitEndedNaval Research Lab
OPS 5798 (TRANSIT 5B-4)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
OPS 4412 (TRANSIT 9)Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
TRANSIT 5E 3Not knownLow Earth orbitEndedBureau of Naval Weapons, US Navy
TRANSIT 5B-2Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
RADIATION SAT (5E 1)Not knownLow Earth orbitEndedBureau of Naval Weapons, US Navy
TRANSIT 5B-1Navigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
ANNA 1BEarth-watching satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
TRAACNot knownLow Earth orbitEndedBureau of Naval Weapons, US Navy
TRANSIT 4BNavigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
SOLRAD 3/INJUN 1Not knownLow Earth orbitEndedOffice of Naval Research
TRANSIT 4ANavigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy
SOLRAD 1 (GREB)Not knownLow Earth orbitEndedNaval Research Lab
TRANSIT 2ANavigation satelliteLow Earth orbitEndedBureau of Naval Weapons, US Navy