BD-2 I4

Compass-IGSO4 (BD-2 I4)

China (PR)

Spacecraft nº:

Chinese spacecraft nº: 161

BD= Beidou 2 - Also called: Beidou DW9 and Compass G-9

Launch data:

Designation	37763 / 11038A
Launch date	26 July 2011 - 21:44:28 UT
Launch site	Xichang, LC3
Launch vehicle	CZ-3A (Y17)
Mission	Military: Navigation/Global positioning
Geostationary orbit:
Perigee / Apogee	35708 x 35879 km
Eccentricity	2.03E-03
Inclination	55.2 deg
Period	1435.1 min

Spacecraft data:

Prime manufactor	Space Technology Research Institute (part of CASC)
Platform	DFH-3 Bus
Operator	Chinese Defense Ministry
Mass at launch	2300 kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment
Solar array	2 deployable solar arrays
Stabilization
Propulsion
DC power
Design lifetime	8 yrs - Operational

Location:

Date	Position	Remarks
	GSO, 55° incl.

Mission details:

Part of Compass constellation.
A new Chinese navigation satellite was launched on Jul 26, 2011. The CALT launch agency refers to it as Beidou-2 IGSO-4 (Beidou er hao IGSO-4 weixing). The Xinhua news agency mostly refers to it as 9th Beidou Navigation Satellite .
On Aug 14 Beidou DW9 was in a 35698 x 35871 km x 55.2 deg orbit with longitudes ranging from 78 to 110E.

Ref.: #7(JR645), #226, #233 - update: 18.10.11