Discoverer 7

Discoverer 7
Mission typeOptical reconnaissance
OperatorUS Air Force / NRO
Harvard designation1959 KAP
COSPAR ID1959-010A Edit this at Wikidata
SATCAT no.S00024
Mission duration1 day
Spacecraft properties
Spacecraft typeCORONA KH-1
BusAgena-A
ManufacturerLockheed
Launch mass920 kilograms (2,030 lb) after orbit insertion
Start of mission
Launch date7 November 1959 20:28:41 (1959-11-07UTC20:28:41Z) GMT
RocketThor DM-21 Agena-A
(Thor 206)
Launch siteVandenberg LC 75-3-4
End of mission
Decay date26 November 1959 (1959-11-27)
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Eccentricity0.04996
Perigee altitude159 kilometers (99 mi)
Apogee altitude847 kilometers (526 mi)
Inclination81.640°
Period94.70 minutes
Epoch7 November 1959

Discoverer 7, also known as Corona 9004,[1]: 236  was an American optical reconnaissance satellite launched on 7 November 1959 at 20:28:41 GMT, the fourth of ten operational flights of the Corona KH-1 spy satellite series. Though the satellite was orbited successfully, its film capsule failed to separate from the main satellite.

  1. ^ Day, Dwayne A.; Logsdon, John M.; Latell, Brian (1998). Eye in the Sky: The Story of the Corona Spy Satellites. Washington and London: Smithsonian Institution Press. ISBN 1-56098-830-4. OCLC 36783934.