Encyclopedia Astronautica
Delta 5920-8


American orbital launch vehicle. Three stage vehicle consisting of 9 x Castor 4A + 1 x ELT Thor/RS-27 + 1 x Delta K with 2.4 m (8 foot) diameter fairing)

LEO Payload: 3,848 kg (8,483 lb) to a 185 km orbit. Payload: 1,405 kg (3,097 lb) to a GTO in 1985 dollars. Flyaway Unit Cost $: 34.220 million.

Status: Retired 1989.
Gross mass: 201,580 kg (444,400 lb).
Payload: 3,848 kg (8,483 lb).
Height: 34.00 m (111.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 3,468.90 kN (779,840 lbf).
Apogee: 185 km (114 mi).
First Launch: 1989.11.18.
Number: 1 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • COBE American infrared astronomy satellite. One launch, 1989.11.18. More...

See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...

Associated Manufacturers and Agencies
  • Douglas American manufacturer of rockets, spacecraft, and rocket engines. Boeing Huntington Beach, Huntington Beach, CA, USA. More...

Associated Launch Sites
  • Vandenberg Vandenberg Air Force Base is located on the Central Coast of California about 240 km northwest of Los Angeles. It is used for launches of unmanned government and commercial satellites into polar orbit and intercontinental ballistic missile test launches toward the Kwajalein Atoll. More...
  • Vandenberg SLC2W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1966. More...

Associated Stages
  • Castor 4A Solid propellant rocket stage. Loaded/empty mass 11,743/1,529 kg. Thrust 478.31 kN. Vacuum specific impulse 266 seconds. More...
  • Delta K N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 6,954/950 kg. Thrust 43.63 kN. Vacuum specific impulse 319 seconds. More...
  • Delta Thor RS27 Lox/Kerosene propellant rocket stage. Loaded/empty mass 84,368/4,360 kg. Thrust 1,030.22 kN. Vacuum specific impulse 296 seconds. More...

Delta 5920-8 Chronology


1989 November 18 - . 14:34 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 5920-8. LV Configuration: Delta 5920-8 D189.
  • COBE - . Mass: 2,265 kg (4,993 lb). Nation: USA. Agency: NASA Greenbelt. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: COBE. USAF Sat Cat: 20322 . COSPAR: 1989-089A. Apogee: 886 km (550 mi). Perigee: 873 km (542 mi). Inclination: 98.9000 deg. Period: 102.60 min. Summary: Cosmic Background Explorer; measured background galactic infrared radiation. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

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