HaiYang-2A (HY-2A) is the second of a series of Earth observation satellites designed at the China National Space Administration (CNSA). The mission objective of HY-2A is to monitor the marine physical characteristics, such as Sea Surface Temperature, wind field and sea level. HY-2A was launched in August 2011 and it is still operational. The orbit has a near sun-synchronous orbit with 99.3° inclination and a repeat cycle of 14 and 168 days.

Satellite Parameter

Launch date2011-08-15
Mass1500 kg
HY-2A (Credit: CAST)

Orbit elements


Repeat cycle [days]14 days
Semi major axis7349136.3 m
Inclination [deg]99.35 °
Mean Height971 km

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