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USA 21

retiredheo

Live HEO tracker

Browse UNCLASSIFIED

Identification

NORAD / COSPAR: 17506 / 1987-015A
Constellation: UNCLASSIFIED
Object type: PAYLOAD
Country / owner: United States
Operator: Various

Launch

Launch date: 12 Feb 1987
Launch site: N/A
Launch vehicle: N/A
Decay date: In orbit

Orbital parameters

Period: 714.70 min
Inclination: 62.97°
Apoapsis: 39367 km
Periapsis: 836 km
Mean altitude: 20101 km
Semi-major axis: 26472 km
Eccentricity: 0.72756

Live state

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

TrackingLive tracker

TLE epoch: 2/14/2026, 3:28:01 AM
Source: Space-Track

1 17506U 87015A   26045.14445650 -.00000778  00000-0 -21159-2 0  9990
2 17506  62.9671 273.1681 7275603 278.0632  12.4511  2.01482512 42766