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Object data
CALSPHERE 4A
Check the current position, flight trajectory and orbital parameters for CALSPHERE 4A (NORAD 1520). Find out when it will be visible in the sky.
NORAD 1520Radar calibrationOrbit
Orbital data
Catalog facts
- Name
- CALSPHERE 4A
- NORAD ID
- 1520
- Category
- Radar calibration
- TLE epoch
- Aug 11, 2026, 11:35 UTC
- Object ID
- 1965-065H
- Object type
- Payload
- Owner
- United States
- Launch site
- Air Force Western Test Range, California, USA
- Launch date
- 1965-08-13
- Operational status
- Active
- Orbit type
- Orbit
- Orbit center
- Earth
Orbital parameters
Orbit profile
Inclination89.8964°
Eccentricity0.0069
Mean motion13.3629 rev/day
Orbital period107.8 min
Perigee1071.7 km
Apogee1174.6 km
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