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Envisat: satellite facts

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Launch	1 March 2002 (CET)
Launcher	Ariane 5
Launch mass	8200 kg
Payload mass (the instruments)	2050 kg
Planned mission length	5 years
Number of instruments	10
Orbit	Sun synchronous, altitude 800 km
Inclination	98 degrees
Time for one orbit	101 minutes
Cycle	35 day repeat, though many of Envisat’s instruments observe a wide swath of Earth and so observe the whole planet every few days.
Cost	About 2 billion Euros
Main contributors	Austria, Belgium, Canada, Denmark, France, Finland, Germany, Italy, Norway, Spain, Sweden, Switzerland, The Netherlands and the United Kingdom