Encyclopedia Astronautica
Delta 7320-10


American orbital launch vehicle. Three stage vehicle consisting of 3 x GEM-40 + 1 x EELT Thor/RS-27A + 1 x Delta K

Status: Active.
Gross mass: 151,700 kg (334,400 lb).
Height: 38.90 m (127.60 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 2,500.00 kN (562,000 lbf).
Apogee: 1,000 km (600 mi).
First Launch: 1999.06.24.
Last Launch: 2011.06.10.
Number: 7 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • FUSE American ultraviolet astronomy satellite. One launch, 1999.06.24. FUSE carried four 0.35m far ultraviolet telescopes each with an ultraviolet high resolution spectrograph. More...
  • SAC-C Argentinan earth land resources satellite. One launch, 2000.11.21. The SAC-C Satelite de Aplicaciones Cientificas C was developed by the Argentine space agency CONAE and built by the Argentine company INVAP. More...
  • EO-1 American earth land resources satellite. One launch, 2000.11.21. The Earth Orbiter 1 satellite was part of NASA's New Millennium Program. More...
  • Munin Swedish technology satellite. One launch, 2000.11.21. Small 6 kg Munin nanosatellite was built by Swedish students in collaboration with the Swedish Institute for Space Physics (IRF) and carried a particle detector, a spectrometer, and an auroral camera. More...
  • QuickBird American civilian surveillance satellite. One launch, 2001.10.18. The QuickBird commercial imaging satellite was owned by DigitalGlobe (formerly EarthWatch) and used a Ball BCP2000 bus with a launch mass of 1028 kg and a dry mass of about 995 kg. More...
  • Jason French earth sea satellite. 2 launches, 2001.12.07 (Jason 1) and 2008.06.20 (Jason 2). Jason was a joint mission between CNES (the French space agency) and NASA/JPL, carrying the same type of sea surface altimeter used on NASA's Topex satellite. More...
  • ICESat American earth land resources satellite. One launch, 2003.01.13. More...
  • CHIPSat American ultraviolet astronomy satellite. One launch, 2003.01.13. NASA's Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) mission used the CHIPSat bus. More...
  • RS-300 American technology satellite bus, first launched 2007.03.09. Ball Aerospace's RS-300 was a small, low-cost spacecraft aimed at cost-capped principle investigator led missions for Earth or space science. 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
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...
  • 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...
  • Cape Canaveral LC17A Delta launch complex. Part of a dual launch pad complex built for the Thor ballistic missile program in 1956. Pad 17A supported Thor, Delta, and Delta II launches into the 21st Century. More...

Associated Stages
  • 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 XLT-C Lox/Kerosene propellant rocket stage. Loaded/empty mass 101,900/5,900 kg. Thrust 1,054.20 kN. Vacuum specific impulse 302 seconds. More...
  • GEM 40 Solid propellant rocket stage. Loaded/empty mass 13,064/1,361 kg. Thrust 492.93 kN. Vacuum specific impulse 274 seconds. More...

Delta 7320-10 Chronology


1999 June 24 - . 15:44 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. Launch Pad: SLC17A. LV Family: Delta. Launch Vehicle: Delta 7320-10. LV Configuration: Delta 7320-10 D271.
  • FUSE - . Nation: USA. Agency: NASA Greenbelt. Manufacturer: Germantown. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: FUSE. USAF Sat Cat: 25791 . COSPAR: 1999-035A. Apogee: 760 km (470 mi). Perigee: 745 km (462 mi). Inclination: 25.0000 deg. Period: 99.90 min. The Delta 3-m payload fairing was successfully jettisoned and the Far Ultraviolet Spectroscopic Explorer was placed in a 754 km x 769 km x 25.0 degree initial orbit. After separation the Delta second stage then a depletion burn and was left in a 182 x 915 km x 19.1 degree orbit from which it would quickly decay out of orbit. Checkout of FUSE in orbit was proceeding well as of July 1.

2000 November 21 - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7320-10. LV Configuration: Delta 7320-10 D282.
  • EO-1 - . Mass: 529 kg (1,166 lb). Nation: USA. Agency: NASA Greenbelt. Manufacturer: Swales. Class: Earth. Type: Earth resources satellite. Spacecraft: EO-1. USAF Sat Cat: 26619 . COSPAR: 2000-075A. Apogee: 703 km (436 mi). Perigee: 702 km (436 mi). Inclination: 98.2000 deg. Period: 98.80 min. First use of a Delta dual payload attach fitting. The Earth Orbiter 1 satellite was part of NASA's New Millenium Program. Complementing the New Millenium's Deep Space series, EO-1 was a NASA-Goddard satellite which demonstrated technology for the next generation Landsat. It flew in formation with Landsat-7 for comparison purposes, using a hydrazine thruster to adjust its orbit. The satellite used a MIDEX-derived bus built by Swales Aerospace; dry mass was 566 kg. The main instruments were ALI (Advanced Land Imager) and the Hyperion 220-band imaging spectrometer. At 1835 GMT the Delta second stage completed its first burn and entered a 185 x 713 km x 98.2 deg transfer orbit. At 1920 GMT the orbit was circularised and EO-1 separated at 1925 GMT into a 682 x 729 km x 98.2 deg orbit.
  • SAC-C - . Mass: 529 kg (1,166 lb). Nation: Argentina. Agency: CONAE. Manufacturer: INVAP. Program: SAC. Class: Earth. Type: Earth resources satellite. Spacecraft: SAC-C. USAF Sat Cat: 26620 . COSPAR: 2000-075B. Apogee: 704 km (437 mi). Perigee: 701 km (435 mi). Inclination: 98.2000 deg. Period: 98.80 min. The SAC-C Satelite de Aplicaciones Cientificas C was developed by the Argentine space agency CONAE and built by the Argentine company INVAP. The 467 kg satellite carried a battery of earth observing instruments for Argentine forestry and agriculture studies. SAC-C also carried a NASA experiment which used the distortion of GPS signals observed near the horizon to derive atmospheric conditions. The DPAF dual payload support structure, derived from Ariane's SPELDA, was ejected after deployment of the EO-1 satellite from the Delta stage to reveal SAC-C. After a further Delta burn SAC-C was ejected at 1955 GMT into a 687 x 707 km x 98.3 deg orbit.
  • Munin - . Mass: 529 kg (1,166 lb). Nation: Sweden. Agency: Seal Beach. Manufacturer: SISP. Class: Technology. Type: Navigation technology satellite. Spacecraft: Munin. USAF Sat Cat: 26621 . COSPAR: 2000-075C. Apogee: 1,797 km (1,116 mi). Perigee: 701 km (435 mi). Inclination: 95.4000 deg. Period: 110.50 min. The small 6 kg Munin nanosatellite was built by Swedish students in collaboration with the Swedish Insitute for Space Physics (IRF) and carried a particle detector, a spectrometer, and an auroral camera. After deployment of EO-1 and SAC-C a fourth burn put the Delta second stage in a 697 x 1800 km x 95.4 deg orbit, after which Munin was ejected from the stage.

2001 October 18 - . 18:51 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7320-10. LV Configuration: Delta 7320-10 D288.
  • QuickBird - . Payload: QuickBird 2. Mass: 980 kg (2,160 lb). Nation: USA. Agency: DigitalGlobe. Manufacturer: Ball. Class: Surveillance. Type: Civilian surveillance satellite. Spacecraft: QuickBird. USAF Sat Cat: 26953 . COSPAR: 2001-047A. Apogee: 471 km (292 mi). Perigee: 471 km (292 mi). Inclination: 97.2000 deg. Period: 94.00 min. The QuickBird commercial imaging satellite was owned by DigitalGlobe (formerly EarthWatch) and used a Ball BCP2000 bus with a launch mass of 1028 kg and a dry mass of about 995 kg. The Delta upper stage entered a 185 x 472 km x 98.1 deg orbit at 1902 GMT. At 1948 GMT it reached apogee and fired again to deploy QuickBird into a 461 x 465 km x 97.2 deg orbit. The Delta then made a series of unusual depletion burns, lowering its perigee to 167 km and changing inclination to 108.9 deg.

    Quickbird 2 was to be operational after a few months of calibration and "ground-truth" checkouts to market high resolution images. The 1.0 tonne satellite was reported to be capable of images with a resolution as small as 0.6 meter, though the standard products were to be coarser. Unlike the comparable quality images from IKONOS images, some of which are currently marketed exclusively to the US military, all Quickbird 2 images may be available in the open market.


2003 January 13 - . 00:45 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7320-10. LV Configuration: Delta 7320-10 D294.
  • ICESat - . Payload: EOS-LAM. Mass: 1,000 kg (2,200 lb). Nation: USA. Agency: NASA. Manufacturer: Ball. Class: Earth. Type: Sea satellite. Spacecraft: ICESat. Decay Date: 2010-08-30 . USAF Sat Cat: 27642 . COSPAR: 2003-002A. Apogee: 610 km (379 mi). Perigee: 593 km (368 mi). Inclination: 94.0089 deg. Period: 96.56 min. Summary: Oceanography, gravimetry, altimetry mission. Delayed from March 30, May 12, August 30, September 10, December 15 and 20, 2002; and Jan. 11 and 12, 2003..
  • CHIPSat - . Payload: CHIPSat BD 2. Mass: 85 kg (187 lb). Nation: USA. Agency: NASA. Manufacturer: SpaceDev. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: CHIPSat. USAF Sat Cat: 27643 . COSPAR: 2003-002B. Apogee: 601 km (373 mi). Perigee: 585 km (363 mi). Inclination: 94.0070 deg. Period: 96.39 min. Summary: Astrophysics mission. Delayed from March 30, May 12, August 30, September 10, December 15 and 20, 2002; and Jan. 11 and 12, 2003..

2008 June 20 - . 07:46 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7320-10. LV Configuration: Delta 7320-10 s/n D334.
  • Jason 2 - . Mass: 506 kg (1,115 lb). Nation: France. Agency: Martin. Class: Earth. Type: Earth resources satellite. Spacecraft: Jason. USAF Sat Cat: 33105 . COSPAR: 2008-032A. Apogee: 1,344 km (835 mi). Perigee: 1,332 km (827 mi). Inclination: 66.0000 deg. Period: 112.40 min.

2009 December 14 - . 14:09 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7320-10. LV Configuration: Delta 7320-10 s/n D347.
  • WISE - . Mass: 674 kg (1,485 lb). Nation: USA. Agency: Martin. Spacecraft: RS-300. USAF Sat Cat: 36119 . COSPAR: 2009-071A. Apogee: 532 km (330 mi). Perigee: 527 km (327 mi). Inclination: 97.5000 deg. Period: 95.20 min. Wide Field Infrared Explorer astronomy satellite, designed to conduct an all-sky survey at infrared frequencies of 3.4, 4.6, 12 and 22 microns, detecting objects 100 times fainter than the earlier IRAS and Akari satellites. Primary instrument is a 40 cm telescope cooled to 12 K by a cryostat filled with solid hydrogen. The survey was expected to detect tens of thousands of new asteroids, brown dwarf stars, and planets orbiting nearby stars.

2011 June 10 - . 14:20 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 7320-10.
  • SAC-D/Aquarius - . Nation: Argentina. Program: SAC. Class: Earth. Type: Weather satellite. Spacecraft: SAC-D. COSPAR: 2011-024A. Apogee: 655 km (406 mi). Perigee: 653 km (405 mi). Inclination: 98.0000 deg. Period: 97.80 min. Argentinian 'Satelite de Aplicaciones Cientificas-D' satellite. Carried NASA Aquarius L-band radiometer/scatterometer map sea salinity; a Ka-band microwave radiometer; a an infrared scanner to measure sea surface temperature; a high sensitivity camera to study light sources at night; and an Italian experiment which measured atmospheric deflection of GPS signals to determine air temperature and humidity.

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