ESIAFI 1 (COMSTAR 4)

retiredgeo

NORAD / COSPAR12309 / 1981-018A

ConstellationUNCLASSIFIED

Object typePAYLOAD

Country / ownerUnited States

OperatorVarious

Launch date21 Feb 1981

Launch siteN/A

Launch vehicleN/A

Decay dateIn orbit

Period1435.98 min

Inclination8.55°

Apoapsis35791 km

Periapsis35778 km

Mean altitude35784 km

Semi-major axis42155 km

Eccentricity0.00016

Latitude—

Longitude—

Altitude—

Velocity—

Footprint area—

TLE epoch9/7/2026, 4:52:55 PM

SourceSpace-Track

1 12309U 81018A   26250.70341782 -.00000073  00000-0  00000-0 0  9991
2 12309   8.5475 310.7125 0001588  70.3138 289.7223  1.00279979168270