Terra (EOS AM-1)
Earth system science flagship — NORAD ID 25994
Orbital Parameters
NORAD ID25994
Altitude~705 km
Orbital Period~99 minutes
Velocity~7.50 km/s
Inclination98.2°
Apogee~710 km
Perigee~705 km
LaunchedDecember 18, 1999
OperatorNASA
About Terra
Terra is NASA's flagship Earth-observing satellite, carrying five instruments that study the interactions among Earth's atmosphere, lands, oceans, and radiant energy. Orbiting at about 705 km in a sun-synchronous orbit, Terra collects data on cloud cover, aerosols, surface temperature, vegetation, and fire activity. Its instruments — MODIS, ASTER, CERES, MISR, and MOPITT — have provided over two decades of continuous climate and environmental observations used by researchers worldwide.
Call Terra