BD-3 M3 & M4 (Beidou DW 28 & DW 29)

China

Spacecraft nº:

Chinese spacecraft nº: 377/378

Beidou BW= Beidou Daohang Weixing.

Launch data:

Designation	BD-3 M3	BD-3 M4
NORAD-ID	43207	43208
Int. code	18018A	18018B
Launch date	12 Feb 2018 - 05:03 UTC
Launch site	Xichang, LC-2
Launch vehicle	CZ-3B/YZ1
Mission	Polaris Navigation
Earth orbit:
Perigee / Apogee	21464 x 22170 km	21539 x 22191 km
Eccentricity
Inclination	55.0°	55.0°
Period	773.2 min	773.2 min
Decay

Launched together.

Spacecraft data:

Prime manufacturer	Shanghai CAS Institute
Platform
Operator
Mass at launch	kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment
Solar array
Stabilization
Propulsion
DC power
Design lifetime

Mission details:

The CALT/Beijing CZ-3B was used for China′s third launch, from Xichang.
Two more CAST/Beijing-built Beidou-3 navigation satellites, Beidou 3 MEO-3 and MEO-4, were launched on Feb 12, becoming Beidou Daohang Weixing 28 and 29.

External links:

Satellite tracking (n2ya.com): Real time satellite tracking

Ref.: #7(JR746), #228 - update: 02.03.18