CBERS-2B

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 programme between the China Centre for Resources Satellite Data and Application and Brazil's National Institute for Space Research.[1] The third CBERS satellite to fly, it was launched by China in 2007 to replace CBERS-2.[3]

CBERS-2B

Mission type	Remote sensing
Operator	CNSA / INPE[1]
COSPAR ID	2007-042A
SATCAT no.	32062
Mission duration	2 years (planned)[2]
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[3]
Rocket	Long March 4B
Launch site	Taiyuan, LC-7
Contractor	SAST
End of mission
Last contact	10 May 2010
Orbital parameters
Reference system	Geocentric orbit [4]
Regime	Sun-synchronous orbit
Perigee altitude	773 km
Apogee altitude	774 km
Inclination	98.60°
Period	100.30 minutes
Epoch	19 September 2007

Spacecraft

CBERS-2B was a 1,450 kilograms (3,200 lb) 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.[2][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 metres (850 ft) and a swath width of 890 kilometres (550 mi).

• High-resolution CCD camera was used for multispectral imaging at a resolution of 20 metres (66 ft) with a swath width of 113 kilometres (70 mi).

• High Resolution Camera (HRC) was a panchromatic imager with a resolution of 2.5 metres (8 ft 2 in) and a swath width of 27 kilometres (17 mi).[7]

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

Launch

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).[3] The satellite was successfully placed into a sun-synchronous orbit.[8]

Last contact

The CBERS-2B spacecraft suffered a power system failure on 10 May 2010, leaving it unable to continue operations. It remains in orbit.[4]

References

1. Krebs, Gunter. "CBERS 1, 2, 2B / ZY 1A, 1B, 1B2". Gunter's Space Page. Retrieved 1 December 2013.
2. "CBERS-1 (China-Brazil Earth Resources Satellite) - 1st Generation Satellite Series". Earth Observation Portal. European Space Agency. Retrieved 1 December 2013.
3. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 1 December 2013.
4. "CBERS 2B Satellite details 2007-042A NORAD 32062". N2YO. 25 January 2015. Retrieved 25 January 2015.
5. "CBERS-1, 2 and 2B Description". INPE. Archived from the original on 20 January 2014. Retrieved 1 December 2013.
6. "Display: CBERS 2B 2007-042A". NASA. 14 May 2020. Retrieved 26 July 2020. This article incorporates text from this source, which is in the public domain.
7. "CBERS-1, 2 and 2B Cameras". INPE. Archived from the original on 20 January 2014. Retrieved 1 December 2013.
8. "UCS Satellite Database". Union of Concerned Scientists. Archived from the original on 9 September 2010. Retrieved 1 December 2013.