From: POGO satellite orbit corrections: an opportunity to improve the quality of the geomagnetic field measurements?
Spacecraft
Launch date
Orbit (km)
Inclination (°)
OGO-2
October 14, 1965
410–1510
87.3
OGO-4
July 28, 1967
410–910
86.0
OGO-6
June 5, 1969
400–1100
82.0