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BD-3 M (Type 2)

BD-3M 3S [CAS]

BD 3M (Beidou 3M) satellites are the MEO component of the 3rd phase of the chinese Beidou (Compass) satellite navigation system, which, in contrast to GPS and GLONASS, uses both geostationary satellites and satellites in intermediate orbit.

This series provides the satellites for the intermediate constellation called "Compass-M" in 12-hours orbits. Ulitmately, the MEO constellation will comprise 27 satellites.

These class of intermediate orbit satellites is similar as the BD-3 I (Type 1) satellites also built by CAS. As they have no apogee propulsion system, they require the launch vehicle to perform the final orbit insertion.

The third phase MEO satellites can be launched as single stellites on a CZ-3C/G3Z with additional dispenser stage, two at a time on a CZ-3B/G3Z with additional dispenser stage or four at a time on a CZ-5 with additional dispenser stage.

Nation: China
Type / Application: Navigation
Operator: CNSA
Contractors: CAS
Equipment: ?
Configuration:
Propulsion:
Power: 2 deployable solar arrays, batteries
Lifetime: 12 years
Mass: 1060 kg
Orbit: 21519 km × 21545 km, 55.26°
Satellite COSPAR Date LS Launch Vehicle Remarks
BD-3 M3-S (Beidou 21) 2016-006A 01.02.2016 Xi LC-2 CZ-3C/G3Z
BD-3 M7 (Beidou 26) 2018-003A 11.01.2018 Xi LC-2 CZ-3B/G3Z with BD-3 M8
BD-3 M8 (Beidou 27) 2018-003B 11.01.2018 Xi LC-2 CZ-3B/G3Z with BD-3 M7
BD-3 M9 (Beidou 30) 2018-029A 29.03.2018 Xi LC-2 CZ-3B/G3Z with BD-3 M10
BD-3 M10 (Beidou 31) 2018-029B 29.03.2018 Xi LC-2 CZ-3B/G3Z with BD-3 M9
BD-3 M11 (Beidou 35) 2018-067A 24.08.2018 Xi LC-3 CZ-3B/G3Z with BD-3 M12
BD-3 M12 (Beidou 36) 2018-067B 24.08.2018 Xi LC-3 CZ-3B/G3Z with BD-3 M11
BD-3 M15 (Beidou 39) 2018-078A 15.10.2018 Xi LC-3 CZ-3B/G3Z with BD-3 M16
BD-3 M16 (Beidou 40) 2018-078B 15.10.2018 Xi LC-3 CZ-3B/G3Z with BD-3 M15
BD-3 M19 (Beidou 52) 2019-090A 16.12.2019 Xi LC-3 CZ-3B/G3Z with BD-3 M20
BD-3 M20 (Beidou 53) 2019-090B 16.12.2019 Xi LC-3 CZ-3B/G3Z with BD-3 M19
BD-3 M21 (Beidou 50) 2019-078A 23.11.2019 Xi LC-3 CZ-3B/G3Z with BD-3 M22
BD-3 M22 (Beidou 51) 2019-078B 23.11.2019 Xi LC-3 CZ-3B/G3Z with BD-3 M21
BD-3 M25 (Beidou 57) 2023-207A 26.12.2023 Xi LC-2 CZ-3B/G3Z with BD-3 M26
BD-3 M26 (Beidou 58) 2023-207B 26.12.2023 Xi LC-2 CZ-3B/G3Z with BD-3 M25

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