Explorer 17

Explorer 17
Explorer-17 satellite
NamesAE-A
Atmosphere Explorer-A
S6
Mission typeEarth science
OperatorNASA
COSPAR ID1963-009A Edit this at Wikidata
SATCAT no.00564
Mission duration98 days (achieved)
Spacecraft properties
SpacecraftExplorer XVII
Spacecraft typeAtmosphere Explorer-A
BusAE
ManufacturerGoddard Space Flight Center
Launch mass183.7 kg (405 lb)
Dimensions0.95 m (3 ft 1 in) diameter
PowerNickel-cadmium batteries
Start of mission
Launch date3 April 1963, 02:00:02 GMT
RocketDelta-B (Thor 357 / Delta 017)
Launch siteCape Canaveral, LC-17A
ContractorDouglas Aircraft Company
Entered service3 April 1963
End of mission
Last contact10 July 1963
Decay date24 November 1966
Orbital parameters
Reference systemGeocentric orbit
RegimeLow Earth orbit
Perigee altitude255 km (158 mi)
Apogee altitude916 km (569 mi)
Inclination57.60°
Period96.39 minutes
Instruments
Langmuir Probes
Mass spectrometers
Pressure gauges
Atmosphere Explorer
AE-B →

Explorer 17 (also known as Atmosphere Explorer-A (AE-A) and S6) 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 in the "Atmosphere Explorer" series.