// geodesy · 1975

GEOS-3

Third and final satellite of NASA's Geodetic Earth Orbiting Satellite/Geodynamics Experimental Ocean Satellite program. GEOS-3 was launched on April 9, 1975 aboard a Delta 1410 from Vandenberg. Latest status in GCAT: in orbit.

COSPAR 1975-027ANORAD 7734United States

Identity

Name in GCAT: Geos 3
Common name: GEOS-3
Payload designation: Geos C
International designator: 1975-027A
NORAD catalog number: 7734
GCAT identifier: S07734
UN registration: A/AC.105/INF.321

Mission

Mission type: Geodesy
Use: Civil government
Program: Geos-C
Owner: NASA WFC
Country: United States
Builder: JHU-Applied Physics Lab
Platform (bus): ANNA

Launch

Date: April 9, 1975 · 23:58 UTC
Launch record: 1975-027Success
Rocket: Delta 1410
Spaceport: Vandenberg · pad SLC2W

Orbit and fate

Orbit class (GCAT): LEO/R
Perigee: 821 km
Apogee: 855 km
Inclination: 114.99°
Status: In orbit
Last known active: May 1981
End of operations: May 1981

Size

Mass: 340 kg
Dry mass: 340 kg
Length: 1.2 m
Diameter: 1.10 m
Span: 6.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q16063525 (CC0).