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KH-4B Corona

KH-4B [NRO]

The KH-4B (Keyhole-4B) was sixth version in the Corona-program to build an optical reconnaissance satellite.

KH-4B carried two J-3 panoramic cameras, with a focal length of 61 cm, and a ground resolution of 1.8 m. The ground swath was 16 km × 217 km.

The DISIC (Dual Improved Stellar Index) camera provided a mapping capability superior to the KH-5 Argon system. The DISIC camera had a focal length of 91 cm, a ground resolution of 30 m, and frame coverage of 260 km × 260 km.

Secondary Payloads

Some satellites carried secondary payloads mounted on the satellite:

  • KH-4B 9 carried the DB-1 (Doppler Beacon 1) payload
  • KH-4B 10 carried the DB-2 payload
  • KH-4B 12 carried the DB-3 payload
  • KH-4B 13 carried the DB-4 payload
  • KH-4B 14 carried the DB-5 payload
  • KH-4B 15 carried the DB-6 payload
  • KH-4B 16 carried the STP S71-3 payload
  • KH-4B 17 carried the STP S71-5 payload

Several missions carried small "Subsatellite Ferret" satellites into orbit.

Nation: USA
Type / Application: Reconnaissance, photo (film return type)
Operator: CIA
Contractors: Lockheed
Equipment: J-3 camera, DISIC camera
Configuration: Agena-D, 2 SRVs
Propulsion: Bell 8096, 2 Star-12 retro motors
Power: Batteries
Lifetime:
Mass: ~3000 kg (incl. Agena stage)
Orbit:
Satellite COSPAR Date LS Launch Vehicle Remarks
KH-4B 1 (Corona 120 / 1101, OPS 5089) 1967-087A 15.09.1967 Va SLC-1W Thorad-SLV2G Agena-D
KH-4B 2 (Corona 122 / 1102, OPS 1001) 1967-122A 09.12.1967 Va SLC-1W Thorad-SLV2G Agena-D
KH-4B 3 (Corona 125 / 1103, OPS 1419) 1968-039B 01.05.1968 Va SLC-3W Thorad-SLV2G Agena-D
KH-4B 4 (Corona 127 / 1104, OPS 5955) 1968-065A 07.08.1968 Va SLC-3W Thorad-SLV2G Agena-D
KH-4B 5 (Corona 129 / 1105, OPS 1315) 1968-098A 03.11.1968 Va SLC-3W Thorad-SLV2G Agena-D
KH-4B 6 (Corona 131 / 1106, OPS 3890) 1969-010A 05.02.1969 Va SLC-3W Thorad-SLV2G Agena-D with P-801 2
KH-4B 7 (Corona 134 / 1107, OPS 3654) 1969-063A 24.07.1969 Va SLC-3W Thorad-SLV2H Agena-D
KH-4B 8 (Corona 136 / 1108, OPS 6617) 1969-105A 04.12.1969 Va SLC-3W Thorad-SLV2H Agena-D
KH-4B 9 (Corona 137 / 1109, OPS 0440) 1970-016A 04.03.1970 Va SLC-3W Thorad-SLV2H Agena-D with Tivoli 3
KH-4B 10 (Corona 138 / 1110, OPS 4720) 1970-040A 20.05.1970 Va SLC-3W Thorad-SLV2H Agena-D with Tripos 4/Sousea 3
KH-4B 11 (Corona 139 / 1111, OPS 4324) 1970-054A 23.07.1970 Va SLC-3W Thorad-SLV2H Agena-D
KH-4B 12 (Corona 140 / 1112, OPS 4992) 1970-098A 18.11.1970 Va SLC-3W Thorad-SLV2H Agena-D with Tophat 1
KH-4B 13 (Corona 141 / 1113, OPS 3297) 1971-F01 17.02.1971 Va SLC-3W F Thorad-SLV2H Agena-D with P-801 3
KH-4B 14 (Corona 142 / 1114, OPS 5300) 1971-022A 24.03.1971 Va SLC-3W Thorad-SLV2H Agena-D
KH-4B 15 (Corona 143 / 1115, OPS 5454) 1971-076A 10.09.1971 Va SLC-3W Thorad-SLV2H Agena-D with Arroyo
KH-4B 16 (Corona 144 / 1116, OPS 5640) 1972-032A 19.04.1972 Va SLC-3W Thorad-SLV2H Agena-D
KH-4B 17 (Corona 145 / 1117, OPS 6371) 1972-039A 25.05.1972 Va SLC-3W Thorad-SLV2H Agena-D