Banxing

Banxing or BX-1 (Chinese: 伴星; lit. 'Companion Satellite'),^[1] is a small Chinese technology development satellite which was deployed from the Shenzhou 7 spacecraft at 11:27 GMT on 27 September 2008.^[1] Prior to deployment, the satellite was mounted on top of the Shenzhou 7 orbital module.

Banxing

Small satellite with shenzhou 7 (model）
Mission type	Spacecraft imaging Technology
Operator	CASC
COSPAR ID	2008-047G
SATCAT no.	33392
Spacecraft properties
Launch mass	40 kilograms (88 lb)
Start of mission
Launch date	25 September 2008, 13:10 (2008-09-25UTC13:10Z) UTC
Rocket	Chang Zheng 2F
Launch site	Jiuquan LA-4/SLS-1
Deployed from	Shenzhou 7
Deployment date	27 September 2008, 11:27 UTC
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Inclination	42.4 degrees

Purpose

Banxing was used to relay images of the Shenzhou 7 spacecraft.^[2] Weighing some 40 kilograms, and containing two cameras and communication equipment, it was maneuvered using an ammonia gas-based propulsion system.^[3] Following the re-entry of Shenzhou 7, Banxing remained in orbit as part of a formation-flying experiment with the discarded Shenzhou orbital module.^[4]

A few hours after Banxing was launched it and the Shenzhou 7 orbital module passed unusually close to the International Space Station. This provoked some speculation that the experiment was intended to test military anti-satellite interception technology.^[3]

See also

• Spaceflight portal

• 2008 in spaceflight
• Orbital Express