This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

astronautix.com Calsphere


Class: Calibration. Nation: USA. Agency: U.S. Air Force, U.S. Navy.

Radar calibration objects (but also cover for other classified subsatellites).


Specification


Calsphere Chronology


06 October 1964 Calsphere 2 Launch Site: Vandenberg . Launch Vehicle: Thor Able-Star. Mass: 10 kg. Perigee: 1,047 km. Apogee: 1,075 km. Inclination: 90.1 deg.

Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).


13 August 1965 Calsphere 4A Launch Site: Vandenberg . Launch Vehicle: Thor Able-Star. Mass: 2 kg. Perigee: 1,074 km. Apogee: 1,181 km. Inclination: 90.1 deg.

Surveillance Calibration; white 14 inch dia. sphere.


31 May 1967 Calsphere 4 Launch Site: Vandenberg . Launch Vehicle: Thor Agena D. Perigee: 815 km. Apogee: 834 km. Inclination: 69.9 deg.

Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).


16 August 1968 AVL-802 Grid Sphere 7-2 Launch Site: Vandenberg . Launch Vehicle: SLV-3 Atlas. FAILURE: Failure.
17 February 1971 Calsphere 3A Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 1 kg. Perigee: 509 km. Apogee: 531 km. Inclination: 98.4 deg.

Radar calibarion sphere. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).



Bibliography:



Back to Index
Last update 12 March 2001.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .