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Radcat (P68-1, P72-1)

Radcat (C) on Radsat

The Radcat (Radar Calibration Target) spacecrafts were cylindrical satellites to provide a passive optical and radar calibration target of about 5 m2 cross section.

The first of these satellites was lost in an cluster launch in 1968, when the oversized payload fairing of the Atlas-SLV3 Burner-2 launch vehicle collapsed.

A second one was successfully orbited in 1972 on an Atlas-F Burner-2 booster. it remained in orbit until 2 August 2012.

Nation: USA
Type / Application: Calibration target
Propulsion: None
Power: None
Lifetime: Passive
Mass: 726 kg (#2)
Orbit: 729 km × 746 km, 98.43 (#2)
Satellite COSPAR Date LS Launch Vehicle Remarks
Radcat (P68-1) 1968-F07 16.08.1968 Va SLC-3E F Atlas-SLV3 Burner-2 with Orbiscal 1, OV5 8, Gridsphere 1, Gridsphere 2, Mylar Balloon, Rigidsphere, LCS 3, LIDOS, RM 18 & UVR, SECOR 11, SECOR 12
Radcat 2 (P72-1) 1972-076A 02.10.1972 Va BMRS-A1 Atlas-F Burner-2 with Radsat
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