Chinese media describe the satellites as intended for "scientific experiments, land survey, crop yield assessment, and disaster monitoring". Western analysts suspect that they are also used for military purposes. Analysts believe that each satellite employs either optical or synthetic aperture radar (SAR) sensors and that the SAR satellites are of the Jian Bing-5 series.
The SAR satellite was developed by the Shanghai Academy of Space Flight Technology(SAST). The electro-optical digital imaging satellite was developed by the China Academy of Space Technology (CAST). It is carried into space atop a Chang Zheng (Long March) rocket.
Yaogan satellites have been launched from both the Taiyuan Satellite Launch Center in China's northern Shanxi province and the Jiuquan Satellite Launch Center in China's northwestern Gansu province.
Yaogan 11 was launched with Long March 2D from Jiuquan Satellite Launch Centre, on September 22, 2010.
Yaogan 1 is believed to have broken up around February 4, 2010 almost four years after it was launched. Because of the small number of pieces and low orbital speeds, it was likely due to an internal explosion, not a high-speed collision.
|Yaogan 1||JB-5-1||April 27, 2006||SAR||635–637 km, 97.9 degrees||29092||2006-015A||SAST||Taiyuan||Long March 4B|
|Yaogan 2||JB-6-1||May 25, 2007||Optical||639–663 km, 97.9 degrees||31490||2007-019A||CAST||Jiuquan||Long March 2D|
|Yaogan 3||JB-5-2||November 12, 2007||SAR||635–637 km, 97.8 degrees||32289||2007-055A||SAST||Taiyuan||Long March 4C|
|Yaogan 4||JB-6-2||December 1, 2008||Optical||642–660 km, 97.9 degrees||33446||2008-061A||CAST||Jiuquan||Long March 2D|
|Yaogan 5||JB-8-1||December 15, 2008||Optical||494–501 km, 97.3 degrees||33456||2008-064A||CAST||Taiyuan||Long March 4B|
|Yaogan 6||JB 7-1||April 22, 2009||SAR||518–519 km, 97.6 degrees||34839||2009-021A||SAST||Taiyuan||Long March 2C|
|Yaogan 7||JB-6-3||December 9, 2009||Optical||630–666 km, 97.8 degrees||36110||2009-069A||CAST||Jiuquan||Long March 2D|
|Yaogan 8||JB 9-1||December 15, 2009||Optical||1200–1212 km, 100.5 degrees||36121||2009-072A||SAST||Taiyuan||Long March 4C|
|unknown||March 5, 2010||Probable ELINT||1089–1107 km, 63.4 degrees
(Orbit of Yaogan 9C)
|CAST||Jiuquan||Long March 4C|
|Yaogan 10||JB 5-3||August 10, 2010||SAR||629–627 km, 97.8 degrees||36834||2010-038A||SAST||Taiyuan||Long March 4C|
|Yaogan 11||JB 6-4||September 22, 2010||Optical||670–625 km, 98.0 degrees||37165||2010-047A||CAST||Jiuquan||Long March 2D|
|Yaogan 12||JB 8-2||November 9, 2011||Optical||479–495 km, 97.3 degrees||37875||2011-066B||CAST||Taiyuan||Long March 4B|
|Yaogan 13||JB 7-2||November 30, 2011||SAR||502–504 km, 97.4 degrees||37941||2011-072A||SAST||Taiyuan||Long March 2C|
|Yaogan 14||May 10, 2012||Optical||471–474 km, 97.3 degrees||38257||2012-021A||CAST||Taiyuan||Long March 4B|
|Yaogan 15||JB 9-2||May 29, 2012||Optical||1198–1204 km, 100.2 degrees||38354||2012-029A||SAST||Taiyuan||Long March 4C|
|November 25, 2012||Probable ELINT||1085–1096 km, 63.4 degrees||39011,
|CAST||Jiuquan||Long March 4C|
|September 1, 2013||Probable ELINT||1060–1119 km, 63.4 degrees||39239,
|SAST||Jiuquan||Long March 4C|
|Yaogan 18||October 29, 2013||509 km, 97.5 degrees||2013-059||Taiyuan||Long March 2C|
|Yaogan 19||November 20, 2013||1119–1204 km, 100.4 degrees||2013-065||Taiyuan||Long March 4C|
|August 9, 2014||Probable ELINT||1086–1092 km, 63.4 degrees||2014-047||Jiuquan||Long March 4C|
|Table data sourced from previously cited references, "CalSky". Web site. CalSky.com. Retrieved 2014-08-19. and "Real Time Satellite Tracking". Web site. N2YO.com. Retrieved 2010-03-05.|
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