Explorer 17
Spacecraft
Explorer 17 was a NASA satellite, launched at Cape Canaveral from LC-17B on a Delta B launch vehicle, on 3 April 1963, at 02:00:02 GMT, to study the Earth's upper atmosphere. It was the first satellite of five "Atmosphere Explorer". Wikipedia
Launch date: April 3, 1963
Launch mass: 183.7 kg (405 lb)
Mission duration: 98 days (achieved)
SATCAT no.: 00564