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ESA/GOES

retiredheo

Live HEO tracker

Browse UNCLASSIFIED

Identification

NORAD / COSPAR: 9931 / 1977-029A
Constellation: UNCLASSIFIED
Object type: PAYLOAD
Country / owner: European Space Agency
Operator: Various

Launch

Launch date: 20 Apr 1977
Launch site: N/A
Launch vehicle: N/A
Decay date: In orbit

Orbital parameters

Period: 734.04 min
Inclination: 27.72°
Apoapsis: 38377 km
Periapsis: 2777 km
Mean altitude: 20577 km
Semi-major axis: 26948 km
Eccentricity: 0.66036

Live state

Latitude: —
Longitude: —
Altitude: —
Velocity: —
Footprint area: —

TrackingLive tracker

TLE epoch: 10/22/2026, 12:05:29 PM
Source: Space-Track

1  9931U 77029A   26295.50380813 -.00000063  00000-0  00000+0 0  9998
2  9931  27.7200  16.0646 6603647 353.0311   1.1862  1.96173630354357