OPS 4311 (DMSP 5B F1)

retiredleo

NORAD / COSPAR5557 / 1971-087A

ConstellationUNCLASSIFIED

Object typePAYLOAD

Country / ownerUnited States

OperatorVarious

Launch date14 Oct 1971

Launch siteN/A

Launch vehicleN/A

Decay dateIn orbit

Period100.80 min

Inclination99.02°

Apoapsis833 km

Periapsis760 km

Mean altitude797 km

Semi-major axis7168 km

Eccentricity0.00508

Latitude—

Longitude—

Altitude—

Velocity—

Footprint area—

TLE epoch9/8/2026, 1:21:43 PM

SourceSpace-Track

1 05557U 71087A   26251.55675839  .00000088  00000-0  53037-4 0  9997
2 05557  99.0238 356.7616 0050783  28.9007 331.4969 14.28546212852340