Encyclopedia Astronautica
Terra


American earth land resources satellite. One launch, 1999.12.18. NASA's Terra satellite (originally known as Earth Observing System EOS AM-1) was the first spacecraft in the EOS program.

Terra carried multispectral imagers, a radiation budget instrument, a detector to measure CO and methane pollution, and an instrument to study cloud top and vegetation properties.

Gross mass: 4,854 kg (10,701 lb).
First Launch: 1999.12.18.
Number: 1 .

More... - Chronology...


Associated Countries
See also
  • Atlas The Atlas rocket, originally developed as America's first ICBM, was the basis for most early American space exploration and was that country's most successful medium-lift commercial launch vehicle. It launched America's first astronaut into orbit; the first generations of spy satellites; the first lunar orbiters and landers; the first probes to Venus, Mars, Mercury, Jupiter, and Saturn; and was America's most successful commercial launcher of communications satellites. Its innovative stage-and-a-half and 'balloon tank' design provided the best dry-mass fraction of any launch vehicle ever built. It was retired in 2004 after 576 launches in a 47-year career. More...

Associated Launch Vehicles
  • Atlas The Atlas rocket, originally developed as America's first ICBM, was the basis for most early American space exploration and was that country's most successful medium-lift commercial launch vehicle. It launched America's first astronaut into orbit; the first generations of spy satellites; the first lunar orbiters and landers; the first probes to Venus, Mars, Mercury, Jupiter, and Saturn; and was America's most successful commercial launcher of communications satellites. Its innovative stage-and-a-half and 'balloon tank' design provided the best dry-mass fraction of any launch vehicle ever built. It was retired in 2004 after 576 launches in a 47-year career. More...
  • Atlas IIAS American orbital launch vehicle. The Atlas II booster was 2.7-meters longer than the Atlas I and included uprated Rocketdyne MA-5A engines. The Atlas I vernier engines were replaced with a hydrazine roll control system. The Centaur stage was stretched 0.9-meters compared to the Centaur I stage. Fixed foam insulation replaced Atlas I's jettisonable insulation panels. Higher performance RL10A-4 or RL10A-4-1 engines replaced Atlas II's RL10A-3-3A. The Atlas IIAS model added four Thiokol Castor IVA solid rocket boosters (SRBs) to the core Atlas stage to augment thrust for the first two minutes of flight. More...

Associated Manufacturers and Agencies
Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • NASA/GSFC Orbital Information Group Website, Web Address when accessed: here.
  • Space-Launcher.com, Orbital Report News Agency. Web Address when accessed: here.
  • NASA Report,
  • NASA Report, Terra Press Kit, Web Address when accessed: here.
  • NASA Report, TERRA THE EARTH OBSERVING SYSTEM (EOS) AM-1 Fact Sheet, Web Address when accessed: here.
  • NASA Report, EOS AM-1 Brochure, Web Address when accessed: here.
  • NASA Report, Terra Brochure, Web Address when accessed: here.
  • NASA Report, Science Writer's Guide to Terra, Web Address when accessed: here.

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 SLC3E Atlas V, Atlas launch complex. Atlas test facility, originally designated PALC1-2, then LC1-2, and finally upgraded to a Space Launch Facility in 1966. More...

Terra Chronology


1999 December 18 - . 18:57 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3E. LV Family: Atlas. Launch Vehicle: Atlas IIAS. LV Configuration: Atlas IIAS AC-141.
  • Terra - . Payload: EOS-AM1. Mass: 4,854 kg (10,701 lb). Nation: USA. Agency: NASA Greenbelt. Manufacturer: Valley Forge. Class: Earth. Type: Seismology satellite. Spacecraft: Terra. USAF Sat Cat: 25994 . COSPAR: 1999-068A. Apogee: 703 km (436 mi). Perigee: 702 km (436 mi). Inclination: 98.2000 deg. Period: 98.80 min. Summary: First launch in NASA's Earth Observing System program. Terra carried multispectral imagers, a radiation budget instrument, a detector to measure CO and methane pollution, and an instrument to study cloud top and vegetation properties..

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