Yaogan

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Yaogan (Chinese: 遥感式卫星; pinyin: yáogǎnshì wèixīng; literally: "Remote Sensing Type Satellite"; sometimes written YaoGan) refers to a series of Chinese reconnaissance satellites launched in the early 21st century.

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.[1] 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.[2]

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.[3]

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.[4]

Launches[edit]

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.[5]

Name Military
designation
Launch
date
Believed
type
Approximate orbit NORAD
ID
COSPAR
designator
Contractor Launch site Launcher
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-10-1 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
Yaogan 9A, 9B, 9C JB-8-1 March 5, 2010 Probable ELINT 1089–1107 km, 63.4 degrees
(Orbit of Yaogan 9C)
36413
36414
36415
2010-009A
2010-009B
2010-009C
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-10-2 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 JB-11-1 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
Yaogan 16A, 16B, 16C JB-8-2 November 25, 2012 Probable ELINT 1085–1096 km, 63.4 degrees 39011
39012
39013
2012-066A
2012-066B
2012-066C
CAST Jiuquan Long March 4C
Yaogan 17A, 17B, 17C JB-8-3 September 1, 2013 Probable ELINT 1060–1119 km, 63.4 degrees 39239
39240
39241
2013-046A
2013-046B
2013-046C
SAST Jiuquan Long March 4C
Yaogan 18 JB-7-3 October 29, 2013 SAR 509 km, 97.5 degrees 39363 2013-059A SAST Taiyuan Long March 2C
Yaogan 19 JB-9-3 November 20, 2013 Optical 1119–1204 km, 100.4 degrees 39410 2013-065A SAST Taiyuan Long March 4C
Yaogan 20A, 20B, 20C JB-8-4 August 9, 2014 Probable ELINT 1086–1092 km, 63.4 degrees 40109
40110
40111
2014-047A
2014-047B
2014-047C
CAST Jiuquan Long March 4C
Yaogan 21 JB-10-3 September 8, 2014 Optical 481–492 km, 97.4 degrees 40143 2014-053A CAST Taiyuan Long March 4B
Yaogan 22 JB-9-4 October 20, 2014 Optical 1198–1207 km, 100.3 degrees 40275 2014-063A SAST Taiyuan Long March 4C
Yaogan 23 JB-7-4 November 14, 2014 SAR 510–514 km, 97.3 degrees 40305 014-071A SAST Taiyuan Long March 2C
Yaogan 24 JB 6-5 November 20, 2014 Optical 629–654 km, 97.9 degrees 40310 2014-072A CAST Jiuquan Long March 2D
Yaogan 25A, 25B, 25C JB-8-5 December 10, 2014 Probable ELINT 1091–1098 km, 63.4 degrees 40338
40339
40340
2014-080A
2014-080B
2014-080C
CAST Jiuquan Long March 4C
Yaogan 26 JB-12-1 December 27, 2014 Optical 482–488 km, 97.4 degrees 40362 2014-088A CAST Taiyuan Long March 4B
Yaogan 27 JB-9-5 August 27, 2015 Optical 1201–1214 km, 100.4 degrees 40878 2015-040A SAST Taiyuan Long March 4C
Yaogan 28 JB-11-2 November 8, 2015 Optical 476–490 km, 97.3 degrees 41026 2015-064A CAST Taiyuan Long March 4B
Yaogan 29 November 26, 2015 SAR 635–636 km, 97.9 degrees 41038 2015-069A SAST Taiyuan Long March 4C
Yaogan 30 JB 6-6 May 15, 2016 Optical 634–664 km, 98.0 degrees 41473 2016-029A CAST Jiuquan Long March 2D
Yaogan 30A, 30B, 30C September 29, 2017 Probable ELINT 602–611 km, 35 degrees 42945
42946
42947
2017-058A
2017-058B
2017-058C
Jiuquan Long March 2C
Yaogan 30D, 30E, 30F November 24, 2017 Probable electro-optical 603–610 km, 35 degrees 43028
43029
43030
2017-075A
2017-075B
2017-075C
Jiuquan Long March 2D
Yaogan 30G, 30H, 30J December 25, 2017 Probable ELINT 602–610 km, 35 degrees 43081
43082
43083
2017-085A
2017-085B
2017-085C
Xichang Long March 2C
Yaogan 30K, 30L, 30M January 25, 2018 Probable ELINT 602–610 km, 35 degrees 43170
43171
43172
2018-011A
2018-011B
2018-011C
Xichang Long March 2C
Yaogan 31A, 31B, 31C April 10, 2018 Probable ELINT 1085–1110 km, 63.4 degrees 43275
43276
43277
2018-034A
2018-034B
2018-034C
Jiuquan Long March 4C
Yaogan 32A, 32B October 9, 2018 Probable ELINT 43642
43643
2018-077A
2018-077B
Jiuquan Long March 2C/YZ-1S
Table data sourced from previously cited references, "CalSky". Web site. CalSky.com. Retrieved 2016-11-09. and "Real Time Satellite Tracking". Web site. N2YO.com. Retrieved 2016-11-09.

See also[edit]

References[edit]

  1. ^ Barbosa, Rui C. (April 22, 2009). "Chinese launch again with YaoGan Weixing-6 remote sensing satellite". News article. NasaSpaceflight.com. Retrieved 2009-04-23.
  2. ^ "YaoGan Weixing / Remote Sensing Satellites". Web article. SinoDefence.com. February 20, 2009. Retrieved 2009-04-24.
  3. ^ "China launches "Yaogan VI" remote-sensing satellite". News article. Xinhua. April 22, 2009. Retrieved 2009-04-24.
  4. ^ "China Launches Yaogan-4 Satellite". Magazine article. Asian Surveying and Mapping. December 2, 2008. Retrieved 2009-04-24.
  5. ^ "Yaogan 1 Erupts". Arms Control Wonk. February 11, 2010. Retrieved 2010-02-11.