Gross Mass: 7,167 kg (15,800 lb). Empty Mass: 867 kg (1,911 lb). Thrust (vac): 71.166 kN (15,999 lbf). Isp: 285 sec. Burn time: 240 sec. Propellants: Nitric acid/UDMH. Isp(sl): 0 sec. Diameter: 1.52 m (4.98 ft). Span: 1.52 m (4.98 ft). Length: 7.09 m (23.26 ft). Country: USA. No Engines: 1. Engine: Bell 8081. Cost $ : 8.700 million. First Flight: 1960. Last Flight: 1968. No Launched: 156. No Failed: 18. Used as: Atlas Agena B; Thor Agena B.