BD-2 M1 [CAST]
Official name BEIDOU IGSO-7
Alternative name Beidou DW 32
Cospar ID 2018-057A
Norad ID 43539
Launch date 2018-07-09
Launch site XSC
Launch vehicle CZ-3A
Country/Organization China
Type application Navigation
Operator CNSA
RCS size LARGE
Decay date ON ORBIT
Period (min) 1436.22
Inclination (deg) 55.16
Perigee (km) 35412
Apogee (km) 36166
Eccentricity 0.0105339629495096
Mean motion (revs. per day) 1.0026319087605
Semi-Major axis (km) 42167.135
Raan (deg) 166.4159
Arg of perigee (deg) 236.4759
Shape Box + 2 Pan
Mass (kg) 2300
Height (m) 3
Width (m) 1.7
Depth (m) 1.7
Span (m^2) 18
Lifetime 8 years
Contractors CAST
Equipment ?
Propulsion 490 N
Configuration DFH-3 Bus
Power 2 deployable solar arrays, batteries

BD 2M (Beidou 2M) and BD 2I (Beidou 2I) satellites are the MEO and IGSO component of the 2rd 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 inclined geostatonary (IGSO) constellation called "Compass-I" and the prototypes for the intermediate constellation called "Compass-M" in 12-hours orbits.

The satellites are based on the DFH-3 Bus. They feature a phased array antenna for navigation signals and a laser retroreflector.

The global MEO satellites are built on a different, smaller satellite bus.

Satellite COSPAR Date LS Launch Vehicle Remarks
BEIDOU 2 2007-011A 2007-04-13 XSC CZ-3A
BEIDOU 5 2010-036A 2010-07-31 XSC CZ-3A
BEIDOU 7 2010-068A 2010-12-17 XSC CZ-3A
BEIDOU 8 2011-013A 2011-04-09 XSC CZ-3A
BEIDOU 9 2011-038A 2011-07-26 XSC CZ-3A
BEIDOU 10 2011-073A 2011-12-01 XSC CZ-3A
BEIDOU 12 2012-018A 2012-04-29 XSC CZ-3B/G1 with BD-2 M4
BEIDOU 13 2012-018B 2012-04-29 XSC CZ-3B/G1 with BD-2 M3
BEIDOU 14 2012-050A 2012-09-18 XSC CZ-3B/G1 with BD-2 M5
BEIDOU 15 2012-050B 2012-09-18 XSC CZ-3B/G1 with BD-2 M2
BEIDOU IGSO-6 2016-021A 2016-03-29 XSC CZ-3A
BEIDOU IGSO-7 2018-057A 2018-07-09 XSC CZ-3A