Bufeng 1 [CAST]
Official name OBJECT B
Alternative name Tianqi-3
Cospar ID 2019-032B
Norad ID 44311
Launch date 2019-06-05
Launch site YSLA
Launch vehicle CZ-11H
Country/Organization China
Type application Technology
Operator CAST
RCS size MEDIUM
Decay date ON ORBIT
Period (min) 95.23
Inclination (deg) 44.98
Perigee (km) 523
Apogee (km) 536
Eccentricity 0.012275731822474
Mean motion (revs. per day) 15.1212853092513
Semi-Major axis (km) 6907.635
Raan (deg) 38.1637
Arg of perigee (deg) 69.219
Shape Box
Mass (kg) 8
Height (m) 0.3
Width (m) 0.2
Depth (m) 0.2
Span (m^2) 0.3
Contractors CAST

Bufeng 1A and 1B is a pair of small Chinese satellites built by CAST for testing the measurement of surface sea wind velocity fields via small satellites formation flying.

The Bufeng satellites measure the velocity of the wind by measuring the signals of navigation satellites reflected on the ocean's surface (GNSS-R).

The satellite were launched in June 2019 on the first sea launch of a CZ-11H rocket.

Satellite COSPAR Date LS Launch Vehicle Remarks
OBJECT A 2019-032A 2019-06-05 YSLA CZ-11H with Jilin-1 Gaofen-03A, Bufeng 1B, Xiaoxiang 1-04, Tianqi 3, Tianxiang 1, Tianxiang 2
OBJECT B 2019-032B 2019-06-05 YSLA CZ-11H with Jilin-1 Gaofen-03A, Bufeng 1A, Xiaoxiang 1-04, Tianqi 3, Tianxiang 1, Tianxiang 2