AKA: SE.4400. Status: Retired 1961. First Launch: 1954-04-09. Last Launch: 1961-03-10. Number: 20 . Gross mass: 1,200 kg (2,600 lb). Height: 8.10 m (26.50 ft). Diameter: 0.56 m (1.83 ft). Apogee: 67 km (41 mi).