CBERS-2B

Mission type	Remote sensing
Operator	CNSA / INPE[1]
COSPAR ID	2007-042A
SATCAT no.	32062
Mission duration	2 years (planned) 2 years, 7 months and 20 days (achieved)
Spacecraft properties
Spacecraft type	CBERS
Bus	Phoenix-Eye 1[1]
Manufacturer	CAST
Launch mass	1450 kg
Dimensions	1.8 x 2.0 x 2.2 m
Power	1100 watts
Start of mission
Launch date	19 September 2007, 03:26:13 UTC[2]
Rocket	Long March 4B
Launch site	Taiyuan Satellite Launch Center, LC-7
Contractor	SAST
End of mission
Last contact	10 May 2010
Orbital parameters
Reference system	Geocentric orbit[3]
Regime	Sun-synchronous orbit
Perigee altitude	773 km
Apogee altitude	774 km
Inclination	98.60°
Period	100.30 minutes
Epoch	19 September 2007

China–Brazil Earth Resources Satellite 2B (CBERS-2B), also known as Ziyuan 1-2B, was a remote sensing satellite operated as part of the China–Brazil Earth Resources Satellite program between the Chinese Center for Resources Satellite Data and Application and Brazilian National Institute for Space Research.^[1] The third CBERS satellite to fly, it was launched by China in 2007 to replace CBERS-2.^[2]

CBERS-2B was a 1,450-kilogram (3,200-pound) spacecraft built by the China Academy of Space Technology and based on the Phoenix-Eye 1 satellite bus.^[1] The spacecraft was powered by a single solar array, which provided 1100 watts of electricity for the satellite's systems.^[4][5] The 1.8 m x 2.0 m x 2.2 m, triaxially-stabilized spacecraft carries a low 20 m resolution, and a higher 2.5 m resolution camera. The data help in crop estimation, urban planning, water resource management, and military intelligence.^[6]

The instrument suite aboard the CBERS-2B spacecraft consisted of three systems:

• Wide Field Imager (WFI) produced visible-light to near-infrared images with a resolution of 260 meters (850 feet) and a swath width of 890 kilometers (550 miles).
• High-resolution CCD camera was used for multispectral imaging at a resolution of 20 m (66 ft) with a swath width of 113 km (70 mi).
• High Resolution Camera (HRC) was a panchromatic imager with a resolution of 2.5 m (8 ft 2 in) and a swath width of 27 km (17 mi).^[7]

The HRC replaced the lower-resolution Infrared Multispectral Scanner instrument flown on earlier CBERS satellites.^[1]

A Long March 4B carrier rocket, operated by the China Academy of Launch Vehicle Technology (CALT), was used to launch CBERS-2B. The launch took place at 03:26:13 UTC on 19 September 2007, using Launch Complex 7 at the Taiyuan Satellite Launch Center (TLSC).^[2] The satellite was successfully placed into a Sun-synchronous orbit.^[8]

The CBERS-2B spacecraft suffered a power system failure on 10 May 2010, leaving it unable to continue operations. It remains in orbit.^[3]