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Terra (EOS AM-1)
TERRA am1.jpg
Terra (EOS AM-1)
Organization NASA
Satellite of Earth
Launch date December 18, 1999
Launch vehicle Atlas II AS
Launch site Vandenberg AFB
COSPAR ID 1999-068A
Home page
Mass 4,864 kg (10,723 lb)
Orbital elements
Eccentricity 0
Inclination 98.2°
Orbital period 98.1 minutes
Apoapsis 685 km (426 mi)
Periapsis 654 km (406 mi)
The Solar eclipse of August 1, 2008 over Russia, Norway, and the Arctic Ocean as seen from NASA's Terra satellite.
The effects of the European winter storms of 2009–10 on Great Britain, seen from Terra.

Terra (EOS AM-1) is a multi-national NASA scientific research satellite in a sun-synchronous orbit around the Earth. It is the flagship of the Earth Observing System (EOS).

The name "Terra" comes from the Latin word for earth. The satellite was launched from Vandenberg Air Force Base on December 18, 1999, aboard an Atlas IIAS vehicle and began collecting data on February 24, 2000.

Terra carries a payload of five remote sensors designed to monitor the state of Earth's environment and ongoing changes in its climate system:

  • ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer)
  • CERES (Clouds and the Earth's Radiant Energy System)
  • MISR (Multi-angle Imaging SpectroRadiometer)
  • MODIS (Moderate-resolution Imaging Spectroradiometer)
  • MOPITT (Measurements of Pollution in the Troposphere)

The data collected by Terra will ultimately become a new, 15-year global data set.

See also

External links

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