CALSPHERE 4A

NORAD 01520· Active satellite· Earth Observation· LEO
Live · TLE epoch 2026-07-25 12:15 UTC
Orbit class
LEO — Low Earth Orbit (circular, < 2,000 km)
Operator
US Air Force
Country
United States
Manufacturer
Launched
Mass
Apogee
1,180 km
Perigee
1,075 km
Inclination
89.90°
Period
1.79 h

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