Orbit Altitude: 1336 km
Orbit Inclination: 66 degrees
Period: 112.4 minutes
Repeat Cycle: 9.9156 days
Perigee: 1,332 km (827 mi)
Apogee: 1,344 km (835 mi)
Orbit Type: LEO > Low Earth Orbit > Polar Non-Sun-Synchronous

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Jason maps ocean surface topography. The data collected
provide information on ocean surface current velocity and
heights which, when combined with ocean models, can
lead to a four-dimensional ... description of ocean circulation.
Data from Jason are also extending ocean surface
topography into the 21st century, providing a 5-year view
of global ocean surface topography, increasing understanding
of ocean circulation, improving forecasting of
climate events, and measuring global sea-level change.

Key Jason Facts
Joint with France
Dimensions: Satellite support module: 95.4 cm ý 95.4 cm ý 100.0 cm;
Payload module 95.4 cm ý 95.4 cm ý 121.8 cm; Solar array span: Two wings with four 1.5 m ý 0.8 m panels per wing; total surface of 9.8 m2
Mass: 500 kg
Power: 2100 W
Downlink: Jason telemetry downlink is 0.7 Mbps (700 Kbps) S-Band to JPL, Wallops Island, Virginia, Poker Flats, Alaska, and Aussaguel, France

http://sealevel.jpl.nasa.gov/mission/jason-1.html
http://www.aviso.oceanobs.com/
http://nasascience.nasa.gov/missions/jason-1
http://www.nasa.gov/centers/jpl/missions/jason.html
http://www.cnes.fr/web/1441-jason.php