Yuanhai-2 []
Official name YUNHAI 2 1
Alternative name Yunhai-2 01 xing
Cospar ID 2018-112A
Norad ID 43909
Launch date 2018-12-29
Launch site JSC
Launch vehicle CZ-2D (2) YZ-3
Country/Organization China
Type application Meteorology
RCS size LARGE
Decay date ON ORBIT
Period (min) 100.82
Inclination (deg) 50.01
Perigee (km) 797
Apogee (km) 798
Eccentricity 0.000626959247648903
Mean motion (revs. per day) 14.2828803808768
Semi-Major axis (km) 7175.635
Raan (deg) 82.5921
Arg of perigee (deg) 3.7752
Shape Box + 2 Pan
Mass (kg) 100
Height (m) 0.5
Width (m) 0.2
Depth (m) 0.2
Span (m^2) 1
Contractors SAST
Power Solar arrays, batteries

Yunhai-2 is a constellation of Chinese military meteorological satellites.

Reportedly the satellites use Global Navigation Satellite System (GNSS) Radio Occultation (GNSS-RO) to collect atmospheric data for weather prediction and for ionosphere, climate and gravity research.

The first cluster of six identical satellites was launched in December 2018 on a CZ-2D (2) YZ-3 rocket. The first three were sent to a circular orbit with a height of 520 km, and the other three were sent to a circular orbit with a height of 1095 km.

Satellite COSPAR Date LS Launch Vehicle Remarks
YUNHAI 2 1 2018-112A 2018-12-29 JSC CZ-2D (2) YZ-3 with Yunhai-2 01, ..., 06, Hongyan 1
YUNHAI 2 2 2018-112B 2018-12-29 JSC CZ-2D (2) YZ-3 with Yunhai-2 01, ..., 06, Hongyan 1
YUNHAI 2 3 2018-112C 2018-12-29 JSC CZ-2D (2) YZ-3 with Yunhai-2 01, ..., 06, Hongyan 1
YUNHAI 2 4 2018-112D 2018-12-29 JSC CZ-2D (2) YZ-3 with Yunhai-2 01, ..., 06, Hongyan 1
YUNHAI 2 5 2018-112E 2018-12-29 JSC CZ-2D (2) YZ-3 with Yunhai-2 01, ..., 06, Hongyan 1
YUNHAI 2 6 2018-112G 2018-12-29 JSC CZ-2D (2) YZ-3 with Yunhai-2 01, ..., 06, Hongyan 1