en Ziyuan (satellite)

Ziyuan
Country of origin	China, Brazil
Operator	CRESDA / INPE; People's Liberation Army[citation needed]
Applications	Remote sensing; Reconnaissance[citation needed]
Specifications
Bus	Phoenix-Eye
Regime	Sun-synchronous
Design life	2-4 years
Production
Status	Operational
On order	1
Built	15
Launched	15
Operational	8
Retired	5
Failed	1
Lost	1
Maiden launch	Ziyuan I-01; 14 October 1999
Last launch	Ziyuan I-02E; 26 December 2021
Related spacecraft
Derivatives	CBERS

Ziyuan (simplified Chinese: 资源; traditional Chinese: 資源; pinyin: Zī Yuán; lit. 'resources') is a series of remote sensing satellites operated by the People's Republic of China. Several Ziyuan satellites are operated jointly with Brazil's National Institute for Space Research under the China–Brazil Earth Resources Satellite program.

Ziyuan satellites are based on the Phoenix-Eye-1 or Phoenix-Eye-2 satellite buses - the Phoenix-Eye-1 is used for CBERS missions while the Phoenix-Eye-2 is used for the remaining satellites. The Ziyuan-II series satellites are operated by the Chinese military.^{[citation needed]} The Ziyuan-III series satellites are operated by the Ministry of Natural Resources.

Satellites

Satellite	COSPAR ID	SATCAT	Launch date^[2]	Rocket	Launch site	Status
Ziyuan I series
Ziyuan I-01 (CBERS-1)	1999-057A	25940	14 October 1999, 03:15 UTC	CZ-4B	Taiyuan, LC-7	Retired 2003
Ziyuan I-02 (CBERS-2)	2003-049A	28057	21 October 2003, 03:16 UTC	CZ-4B	Taiyuan, LC-7	Retired 2007
Ziyuan I-02B (CBERS-2B)	2007-042A	32062	19 September 2007, 03:26 UTC	CZ-4B	Taiyuan, LC-7	Failed 2010
Ziyuan I-02C	2011-079A	38038	22 December 2011, 03:26 UTC	CZ-4B	Taiyuan, LC-9	Operational
Ziyuan I-03 (CBERS-3)	—		9 December 2013, 03:26 UTC	CZ-4B	Taiyuan, LC-9	Launch failure
Ziyuan I-04 (CBERS-4)	2014-079A	40336	7 December 2014, 03:26 UTC	CZ-4B	Taiyuan, LC-9	Operational
Ziyuan I-04B (CBERS-4B)			2018^[1]	CZ-4B	Taiyuan	On order
Ziyuan I-02D	2019-059A	44528	12 September 2019, 03:26 UTC	CZ-4B	Taiyuan	Launched
Ziyuan I-04A (CBERS-4A)	2019-093E	44883	20 December 2019, 03:22 UTC	CZ-4B	Taiyuan LC-9	Launched
Ziyuan I-02E	2021-131A		26 December 2021, 03:11 UTC	CZ-4C	Taiyuan LC-9	Launched
Ziyuan II series
Ziyuan II-01	2000-050A	26481	1 September 2000, 03:25 UTC	CZ-4B	Taiyuan, LC-7	De-orbited 3 November 2016
Ziyuan II-02	2002-049A	27550	27 October 2002, 03:17 UTC	CZ-4B	Taiyuan, LC-7	De-orbited 22 January 2015
Ziyuan II-03	2004-044A	28470	6 November 2004, 03:10 UTC	CZ-4B	Taiyuan, LC-7	Presumed retired
Ziyuan III series
Ziyuan III-01	2012-001A	38046	9 January 2012, 03:17 UTC	CZ-4B	Taiyuan, LC-9	Operational
Ziyuan III-02	2016-033A	41556	30 May 2016, 03:17 UTC	CZ-4B	Taiyuan, LC-9	Launched^[3]
Ziyuan III-03	2020-051A	45939	25 July 2020, 03:13 UTC	CZ-4B	Taiyuan, LC-9

References

^ ^a ^b Krebs, Gunter. "CBERS 3, 4, 4B / ZY 1D, 1E, 1E2". Gunter's Space Page. Retrieved 30 May 2016.
^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 December 2013.
^ Barbosa, Rui C. (29 May 2016). "Chinese Long March 4B lofts satellites for Ziyuan-3 and Aleph-1 programs". NASASpaceflight.com.

[gunter-1] Krebs, Gunter. "CBERS 3, 4, 4B / ZY 1D, 1E, 1E2". Gunter's Space Page. Retrieved 30 May 2016.

[launchlog-2] McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 2 December 2013.

[3] Barbosa, Rui C. (29 May 2016). "Chinese Long March 4B lofts satellites for Ziyuan-3 and Aleph-1 programs". NASASpaceflight.com.

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