Satellites/NAVSTAR 71 (USA 256)
NAVSTAR 71 (USA 256)
Satellite · United StatesActive
Who
Owner / operatorUS Air Force Space and Missile Center
ManufacturerBoeing Satellite Development Center, El Segundo
CountryUnited States
Catalogue owner codeUS
Orbit
OrbitingEarth
Orbit classMEO
Perigee20,085 km
Apogee20,279 km
Inclination55.46°
Period718 min
Radar cross-section10.787 m²
Latest Orbital Elements
Epoch (UTC)2026-11-07 15:28:37
Mean motion2.00567513 rev/day
Eccentricity0.0036495
Inclination55.4587°
Right ascension of node82.7539°
Argument of perigee122.0017°
Mean anomaly238.3295°
B* drag term0.0000e+0
Element set999
Revolutions at epoch8,895
Mean elements (OMM) for the SGP4 model, refreshed every 6 hours. They describe the orbit at the epoch shown and drift as time passes, fastest for low orbits.
Source: CelesTrak satellite catalogue and GP data (celestrak.org); owner and manufacturer from GCAT (J. McDowell, CC BY 4.0).