Satellite
Calsphere 1
A 36-cm aluminium sphere launched by the US Navy in 1964 to calibrate radars. It is the oldest object in this catalogue still listed as active: a perfect sphere has no way to fail.
- Catalogue name
- CALSPHERE 1
- NORAD ID
- 900
- Owner
- United States
- Launched
- October 6, 1964
- Altitude (perigee – apogee)
- 965 – 1,001 km
- Orbital period
- 104.6 min
- Inclination
- 90.2°