Satellite Grace 1 (Gravity Recovery and Climate Experiment, "Tom and Jerry") of GeoForschungsZentrum (GFZ)/Center for Space Research, University of Texas

Name of Satellite, Alternate Names Grace 1 (Gravity Recovery and Climate Experiment, "Tom and Jerry")
Country of Operator/Owner Germany/USA
Operator/Owner GeoForschungsZentrum (GFZ)/Center for Space Research, University of Texas
Users Civil
Purpose Earth Science
Class of Orbit LEO
Type of Orbit Polar
Longitude of GEO (degrees) 0
Perigee (km) 435
Apogee (km) 450
Eccentricity 0.00110091743119266
Inclination (degrees) 89
Period (minutes) 93.4
Launch Mass (kg.) 480
Dry Mass (kg.) 445
Power (watts) 150
Date of Launch 17-03-2002
Expected Lifetime 5 yrs.
Contractor Jet Propulsion Laboratory (NASA)/Space Systems/Loral/Astrium GmBH
Country of Contractor Germany/USA
Launch Site Plesetsk Cosmodrome
Launch Vehicle Rokot
COSPAR Number 2002-012A
NORAD Number 27391
Comments Map gravitational mini-variations caused by sea-level changes, glaciers and melting/freezing of ice sheets by measuring distance between satellites.

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