About: Discoverer 20   Sponge Permalink

An Entity of Type : dbkwik:resource/G7YR4yAvfoe7I_ap4nmguQ==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

The launch of Discoverer 20 occurred at 20:25 UTC on 17 February 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch pad 75-3-4 at the Vandenberg Air Force Base. Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Epsilon 1.

AttributesValues
rdf:type
rdfs:label
  • Discoverer 20
rdfs:comment
  • The launch of Discoverer 20 occurred at 20:25 UTC on 17 February 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch pad 75-3-4 at the Vandenberg Air Force Base. Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Epsilon 1.
sameAs
dcterms:subject
dbkwik:nasa/proper...iPageUsesTemplate
Harvard designation
  • 1961(xsd:integer)
spacecraft bus
spacecraft type
Name
  • Discoverer 20
Manufacturer
  • Lockheed
orbit period
  • 5712.0
orbit inclination
  • 80(xsd:double)
Operator
decay date
  • 1962-07-28(xsd:date)
launch site
  • Vandenberg SLC-1 launch pad 75-3-4
Mission Type
  • Optical reconnaissance
apsis
  • gee
orbit regime
launch rocket
  • Thor DM-21 Agena-B 298
Launch date
  • --02-17
orbit reference
abstract
  • The launch of Discoverer 20 occurred at 20:25 UTC on 17 February 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch pad 75-3-4 at the Vandenberg Air Force Base. Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Epsilon 1. Discoverer 20 was operated in a low Earth orbit, with a perigee of kilometre (mi), an apogee of kilometre (mi), 80.9 degrees of inclination, and a period of 95.2 minutes. The satellite had a mass of kilogram (lb), and was equipped with a frame camera with a focal length of millimetre (in), which had a maximum resolution of metre (ft). Images were recorded onto -millimeter () film, and were to have been returned in an SRV before the satellite ceased operations. Due to a problem with the systems controlling the flight program, the spacecraft failed to eject its film capsule, and hence no images were returned. Discoverer 20 decayed from orbit on 28 July 1962.
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