Chang'e 1: Difference between revisions

Chang'e 1
Mission type	Lunar orbiter
Operator	China National Space Administration
COSPAR ID	2007-051A
SATCAT no.	32273
Mission duration	Planned: 1 year ; Achieved: 1 year, 4 months, 4 days
Spacecraft properties
Launch mass	2,350 kg
Start of mission
Launch date	24 October 2007, 10:05:04.602 UTC
Rocket	Chang Zheng 3A
Launch site	Xichang LC-3
End of mission
Disposal	Deorbited (Moon impact)
Decay date	1 March 2009, 08:13:10 UTC
Orbital parameters
Reference system	Selenocentric
Periselene altitude	200 kilometres (120 mi)
Aposelene altitude	200 kilometres (120 mi)
Inclination	64 degrees
Period	127 minutes
Lunar orbiter
Orbital insertion	5 November 2007
Impact site	1°30′S 52°22′E / 1.50°S 52.36°E
	Chinese Lunar Exploration Program Chang'e 2 →

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Chang'e 1 ( /tʃæŋˈʌ/; simplified Chinese: 嫦娥一号; traditional Chinese: 嫦娥一號; pinyin: Cháng'é yī hào) was an uncrewed Chinese lunar-orbiting spacecraft, part of the first phase of the Chinese Lunar Exploration Program. The spacecraft was named after the Chinese Moon goddess, Chang'e.

Chang'e 1 was launched on 24 October 2007 at 10:05:04 UTC from Xichang Satellite Launch Center.^[4] It left lunar transfer orbit on 31 October and entered lunar orbit on 5 November.^[5] The first picture of the Moon was relayed on 26 November 2007.^[6] On 12 November 2008, a map of the entire lunar surface was released, produced from data collected by Chang'e 1 between November 2007 and July 2008.^[7]^[8]

The mission was scheduled to continue for a year, but was later extended and the spacecraft operated until 1 March 2009, when it was taken out of orbit. It impacted the surface of the Moon at 08:13 UTC.^[2] Data gathered by Chang'e 1 was used to create an accurate and high resolution 3-D map of the lunar surface.^[9] Chang'e 1 was the first lunar probe to conduct passive, multi-channel, microwave remote sensing of the Moon by using a microwave radiometer.^[10]

Its sister orbital probe Chang'e 2 was launched on 1 October 2010.^[11]

Overview

The Chinese Lunar Exploration Program is designed to be conducted in four ^[12] phases of incremental technological advancement: The first is simply reaching lunar orbit, a task completed by Chang'e 1 in 2007 and Chang'e 2 in 2010. The second is landing and roving on the Moon, as Chang'e 3 did in 2013 and Chang'e 4 did in 2019. The third is collecting lunar samples from the near-side and sending them to Earth, a task for the Chang'e 5 and Chang'e 6 missions. The fourth phase consists of development of a robotic research station near the Moon's south pole.^[12]^[13]^[14] The program aims to facilitate a crewed lunar landing in the 2030s and to possibly build an outpost near the south pole.^[15]

Objectives

The Chang'e 1 mission had four major goals:^[8]^[16]

Obtaining three-dimensional images of the landforms and geological structures of the lunar surface, so as to provide a reference for planned future soft landings. The orbit of Chang'e 1 around the Moon was designed to provide complete coverage, including areas near the north and south poles not covered by previous missions.
Analysing and mapping the abundance and distribution of various chemical elements on the lunar surface as part of an evaluation of potentially useful resources on the Moon. China hopes to extend the number of elements studied to 14 (potassium (K), thorium (Th), uranium (U), oxygen (O), silicon (Si), magnesium (Mg), aluminium (Al), calcium (Ca), tellurium (Te), titanium (Ti), sodium (Na), manganese (Mn), chromium (Cr), and lanthanum (La)),^[17] compared with the 10 elements (K, U, Th, Fe (iron), Ti, O, Si, Al, Mg, and Ca)^[18] previously probed by NASA's Lunar Prospector.
Probing the features of the lunar soil and assessing its depth, as well as the amount of helium-3 (³He) present.^[17]
Probing the space environment between 40,000 km. (24854.8 mi) and 400,000 km (248548.5 mi) from the Earth, recording data on the solar wind and studying the impact of solar activity on the Earth and the Moon.

In addition, the lunar probe engineering system, composed of five major systems – the satellite system, the launch vehicle system, the launch site system, the monitoring and control system and the ground application system – accomplished five goals:

Researching, developing and launching China's first lunar probe
Mastering the basic technology of placing satellites in lunar orbit
Conducting China's first scientific exploration of the Moon
Initially forming a lunar probe space engineering system
Accumulating experience for the later phases of China's lunar exploration program

Mission

According to the schedule, detailed design of the first program milestone was completed by September 2004. Research and development of a prototype probe and relevant testing of the probe were finished before the end of 2005. Design, manufacture, general assembly, test and ground experiments of the lunar orbiter were finished before December 2006.^{[citation needed]}

Originally scheduled for April 2007, the launch was postponed until October as this was "a better time for sending a satellite into the Moon's orbit".^[19] Chang'e 1 was launched by a Long March 3A rocket at 10:05 GMT on October 24, 2007, from Xichang Satellite Launch Center in Sichuan Province.

After liftoff, Chang'e 1 made three orbits around the Earth, a burn at perigee extending the orbit's apogee further each time, until a final translunar injection burn placed it on course for the Moon on October 31, 2007. Another burn placed it in a polar orbit around the Moon, with burns at the periselenium of the first three orbits decreasing the aposelenium until it entered a final circular orbit. Lunar orbit insertion was achieved on the November 5, 2007. To mark this occasion, the probe transmitted 30 classical Chinese songs and musical pieces, including "My Motherland", "The Song of the Yangtze River", and "High Mountains and Flowing Water".^{[citation needed]}

The probe was remotely controlled from stations at Qingdao and Kashgar, as the first use of the Chinese Deep Space Network. The ESA Maspalomas Tracking Station was also used to transmit signals to and from the probe.^{[citation needed]}

The first pictures of the Moon were relayed on November 26, 2007. The probe was designed to orbit the Moon for one year,^[17] but operations were later extended, and it remained in lunar orbit until March 1, 2009.

End of mission

On 1 March 2009, at 08:13:10 UTC, Chang'e 1 crashed onto the surface of the Moon, ending its mission. According to the State Administration of Science, Technology and Industry for National Defense (China), this was a planned and controlled impact.^[20] Impact point was 1°30′S 52°22′E / 1.50°S 52.36°E / -1.50; 52.36.^[21]^[22]^[23] During its orbital mission the probe transmitted 1,400 gigabits or 175 gigabytes (GB) of data.^[24]

Design and instrumentation

The Chang'e 1 spacecraft had a mass of 2,350 kilograms (5,180 lb), with a 130-kilogram (290 lb) payload, carrying 24 instruments including a charge-coupled device (CCD) stereo camera, microprobe instruments, and a high-energy solar particle detector.

Stereo camera with an optical resolution of 120 metres (390 ft) and spectrometer imager operating at wavelengths of 0.48 to 0.96 μm (4,800–9,600 Å)
Laser altimeter with 1,064 nm, 150 mJ laser, a range resolution of 1 metre (3 ft 3 in) and a spot size of 300 metres (980 ft)
Imaging spectrometer
Gamma and X-ray spectrometer working in an energy range of 0.5 to 50 keV for X-rays and 300 keV to 9 MeV for gamma rays
Microwave radiometer detecting 3, 7.8, 19.35 and 37 GHz with a maximal penetration depth of 30, 20, 10, 1 m (98.4, 65.6, 32.8, 3.3 ft) and a thermal resolution of 0.5 K
High energy particle detector and two solar wind detectors capable of the detection of electrons and heavy ions up to 730 MeV

Achievements

Chang'e 1 created an accurate and high resolution 3-D map ever of the lunar surface.
Chang'e 1 conducted world's first passive, multi-channel, microwave remote sensing of the Moon.^[10]

References

^ "China's first lunar probe Chang'e-1 blasts off". SINA Corporation. October 24, 2007. Retrieved 2007-10-24.
^ ^a ^b Guodong, Du (2009-03-01). "China's lunar probe Chang'e-1 impacts Moon". Xinhua. Archived from the original on March 2, 2009. Retrieved 2009-03-01.
^ "Chang'e 1". NASA Space Science Data Coordinated Archive. Retrieved November 30, 2022.
^ "China's 1st Moon orbiter enters Earth orbit". Xinhua News Agency. October 24, 2007. Archived from the original on October 25, 2007. Retrieved 2007-10-24.
^ "China's Chang'e-I Enters Moon Orbit". www.efluxmedia.com. Archived from the original on November 7, 2007.
^ "China publishes first Moon picture". China National Space Administration. November 26, 2007. Archived from the original on November 28, 2007. Retrieved 2007-11-26.
^ "China publishes first map of whole lunar surface". 12 November 2008. Retrieved 2008-11-12.
^ ^a ^b "Chang'E-1 Lunar Mission: An Overview and Primary Science Results" (PDF). Archived from the original (PDF) on 2016-11-09. Retrieved 2011-08-23.
^ "China's map leaps over the moon" Asia Times
^ ^a ^b "Chang'e-1 – eoPortal Directory – Satellite Missions". directory.eoportal.org.
^ "BBC 中文网 – 两岸三地 – 嫦娥二号奔月有助提升军事威慑力". Bbc.co.uk. 2010-10-01. Retrieved 2013-11-16.
^ ^a ^b Chang'e 4 press conference. CNSA, broadcast on 14 January 2019.
^ China's Planning for Deep Space Exploration and Lunar Exploration before 2030. (PDF) XU Lin, ZOU Yongliao, JIA Yingzhuo. Space Sci., 2018, 38(5): 591-592. doi:10.11728/cjss2018.05.591
^ A Tentative Plan of China to Establish a Lunar Research Station in the Next Ten Years. Zou, Yongliao; Xu, Lin; Jia, Yingzhuo. 42nd COSPAR Scientific Assembly. Held 14–22 July 2018, in Pasadena, California, USA, Abstract id. B3.1-34-18.
^ China lays out its ambitions to colonize the moon and build a "lunar palace". Echo Huang, Quartz. 26 April 2018.
^ "Chang'e-1 – new mission to Moon lifts off". European Space Agency. Retrieved 2007-10-24.
^ ^a ^b ^c Sūn Huīxiān (孙辉先); Dài Shùwǔ (代树武); Yáng Jiànfēng (杨建峰); Wú Jì (吴季) & Jiāng Jǐngshān (姜景山) (2005). "Scientific objectives and payloads of Chang'E-1 lunar satellite" (PDF). Journal of Earth System Science. 114 (6): 789–794. Bibcode:2005JESS..114..789H. doi:10.1007/BF02715964. S2CID 128428662.
^ D. J. Lawrence; W. C. Feldman; B. L. Barraclough; A. B. Binder; et al. (1998). "Global Elemental Maps of the Moon: The Lunar Prospector Gamma-Ray Spectrometer". Science. 281 (5382): 1484–1489. Bibcode:1998Sci...281.1484L. doi:10.1126/science.281.5382.1484. PMID 9727970.
^ "Chang'e-1 Satellite Launch Delayed". China Radio International. March 15, 2007. Archived from the original on March 17, 2007. Retrieved 2007-10-24.
^ "China lunar probe mission ends with planned crash". USA Today. Associated Press. 2009-03-02. Retrieved 2009-03-02.
^ "NASA NSSDC Master Catalog – Chang'e 1". Retrieved 2011-01-01.
^ "Chang'e-1 impacts Moon (coordinates)". China People's Daily Online. 2 March 2009. Retrieved 2011-01-01.
^ "Smackdown". Aviation Week & Space Technology. Vol. 70, no. 10. 9 March 2009. p. 16.
^ "Chang'e-1 - eoPortal Directory - Satellite Missions". directory.eoportal.org. Retrieved 2021-11-18.

External links

[1] "China's first lunar probe Chang'e-1 blasts off". SINA Corporation. October 24, 2007. Retrieved 2007-10-24.

[deorbit-2] Guodong, Du (2009-03-01). "China's lunar probe Chang'e-1 impacts Moon". Xinhua. Archived from the original on March 2, 2009. Retrieved 2009-03-01.

[3] "Chang'e 1". NASA Space Science Data Coordinated Archive. Retrieved November 30, 2022.

[4] "China's 1st Moon orbiter enters Earth orbit". Xinhua News Agency. October 24, 2007. Archived from the original on October 25, 2007. Retrieved 2007-10-24.

[5] "China's Chang'e-I Enters Moon Orbit". www.efluxmedia.com. Archived from the original on November 7, 2007.

[6] "China publishes first Moon picture". China National Space Administration. November 26, 2007. Archived from the original on November 28, 2007. Retrieved 2007-11-26.

[7] "China publishes first map of whole lunar surface". 12 November 2008. Retrieved 2008-11-12.

[results-8] "Chang'E-1 Lunar Mission: An Overview and Primary Science Results" (PDF). Archived from the original (PDF) on 2016-11-09. Retrieved 2011-08-23.

[atimes.com-9] "China's map leaps over the moon" Asia Times

[directory.eoportal.org-10] "Chang'e-1 – eoPortal Directory – Satellite Missions". directory.eoportal.org.

[11] "BBC 中文网 – 两岸三地 – 嫦娥二号奔月有助提升军事威慑力". Bbc.co.uk. 2010-10-01. Retrieved 2013-11-16.

[Jan_2019_press_conference-12] Chang'e 4 press conference. CNSA, broadcast on 14 January 2019.

[Planning_by_2018-13] China's Planning for Deep Space Exploration and Lunar Exploration before 2030. (PDF) XU Lin, ZOU Yongliao, JIA Yingzhuo. Space Sci., 2018, 38(5): 591-592. doi:10.11728/cjss2018.05.591

[14] A Tentative Plan of China to Establish a Lunar Research Station in the Next Ten Years. Zou, Yongliao; Xu, Lin; Jia, Yingzhuo. 42nd COSPAR Scientific Assembly. Held 14–22 July 2018, in Pasadena, California, USA, Abstract id. B3.1-34-18.

[15] China lays out its ambitions to colonize the moon and build a "lunar palace". Echo Huang, Quartz. 26 April 2018.

[16] "Chang'e-1 – new mission to Moon lifts off". European Space Agency. Retrieved 2007-10-24.

[huixian-17] Sūn Huīxiān (孙辉先); Dài Shùwǔ (代树武); Yáng Jiànfēng (杨建峰); Wú Jì (吴季) & Jiāng Jǐngshān (姜景山) (2005). "Scientific objectives and payloads of Chang'E-1 lunar satellite" (PDF). Journal of Earth System Science. 114 (6): 789–794. Bibcode:2005JESS..114..789H. doi:10.1007/BF02715964. S2CID 128428662.

[18] D. J. Lawrence; W. C. Feldman; B. L. Barraclough; A. B. Binder; et al. (1998). "Global Elemental Maps of the Moon: The Lunar Prospector Gamma-Ray Spectrometer". Science. 281 (5382): 1484–1489. Bibcode:1998Sci...281.1484L. doi:10.1126/science.281.5382.1484. PMID 9727970.

[19] "Chang'e-1 Satellite Launch Delayed". China Radio International. March 15, 2007. Archived from the original on March 17, 2007. Retrieved 2007-10-24.

[AP-20] "China lunar probe mission ends with planned crash". USA Today. Associated Press. 2009-03-02. Retrieved 2009-03-02.

[21] "NASA NSSDC Master Catalog – Chang'e 1". Retrieved 2011-01-01.

[22] "Chang'e-1 impacts Moon (coordinates)". China People's Daily Online. 2 March 2009. Retrieved 2011-01-01.

[23] "Smackdown". Aviation Week & Space Technology. Vol. 70, no. 10. 9 March 2009. p. 16.

[24] "Chang'e-1 - eoPortal Directory - Satellite Missions". directory.eoportal.org. Retrieved 2021-11-18.

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@@ Line 1: / Line 1: @@
+{{Short description|Chinese lunar probe launched in 2007}}
 {{Infobox spaceflight
 | name                  = Chang'e 1
 | image                 = Chang e 1.jpg
 | image_caption         =
-| mission_type          = Lunar orbiter<ref>{{cite web | url=http://english.sina.com/technology/1/2007/1024/129176.html | title=China's first lunar probe Chang'e-1 blasts off | publisher=[[SINA Corporation]] | date=October 24, 2007 | accessdate=2007-10-24}}</ref><ref name="deorbit"/>
+| mission_type          = Lunar orbiter<ref>{{cite web | url=http://english.sina.com/technology/1/2007/1024/129176.html | title=China's first lunar probe Chang'e-1 blasts off | publisher=[[SINA Corporation]] | date=October 24, 2007 | access-date=2007-10-24}}</ref><ref name="deorbit"/>
 | operator              = [[China National Space Administration]]
 | COSPAR_ID             = 2007-051A
 | SATCAT                =
 | website               =
-| mission_duration      = Planned: 1&nbsp;year <br/>Achieved: 1&nbsp;year, 4&nbsp;months, 4&nbsp;days
+| mission_duration      = Planned: 1&nbsp;year <br />Achieved: 1&nbsp;year, 4&nbsp;months, 4&nbsp;days
 | spacecraft_bus        =
 | manufacturer          =
 | dry_mass              =
+| launch_mass           = 2,350 kg<ref>{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2007-051A |title=Chang'e 1 |publisher=[[NASA Space Science Data Coordinated Archive]] |access-date=November 30, 2022}}</ref>
-| launch_mass           = {{convert|2350|kg|lb}}
 | power                 =
 | launch_date           = {{start-date|24 October 2007, 10:05:04.602|timezone=yes}}&nbsp;UTC
@@ Line 18: / Line 19: @@
 | launch_site           = [[Xichang Satellite Launch Center|Xichang]] [[Xichang Launch Complex 3|LC-3]]
 | launch_contractor     =
-| disposal_type         = Deorbited
+| disposal_type         = Deorbited (Moon impact)
 | decay_date            = {{end-date|1 March 2009, 08:13:10|timezone=yes}}&nbsp;UTC
 | orbit_epoch           =
@@ Line 39: / Line 40: @@
 }}
-'''Chang'e 1''' ({{IPAc-en|pron|tʃ|æ|ŋ|'|ʌ|}}; {{zh|s=嫦娥一号|t=嫦娥一號|p=Cháng'é yī hào}}) was an [[Robotic spacecraft|unmanned]] Chinese [[Moon|lunar]]-orbiting [[spacecraft]], part of the first phase of the [[Chinese Lunar Exploration Program]]. The spacecraft was named after the Chinese Moon goddess, [[Chang'e]].
+'''Chang'e 1''' ({{IPAc-en|pron|tʃ|æ|ŋ|'|ʌ}}; {{zh|s=嫦娥一号|t=嫦娥一號|p=Cháng'é yī hào}}) was an [[Robotic spacecraft|uncrewed]] Chinese [[Moon|lunar]]-orbiting [[spacecraft]], part of the first phase of the [[Chinese Lunar Exploration Program]]. The spacecraft was named after the Chinese Moon goddess, [[Chang'e]].
-Chang'e 1 was launched on 24 October 2007 at 10:05:04 [[Coordinated Universal Time|UTC]] from [[Xichang Satellite Launch Center]].<ref>{{cite web|url=http://news.xinhuanet.com/english/2007-10/24/content_6937622.htm | title=China's 1st Moon orbiter enters Earth orbit | publisher=[[Xinhua News Agency]] | date=October 24, 2007 | accessdate=2007-10-24}}</ref> It left [[lunar transfer orbit]] on 31 October and entered [[lunar orbit]] on 5 November.<ref>http://www.efluxmedia.com/news_Chinas_Change_I_Enters_Moon_Orbit_10279.html  {{webarchive |url=https://web.archive.org/web/20071107081712/http://www.efluxmedia.com/news_Chinas_Change_I_Enters_Moon_Orbit_10279.html |date=November 7, 2007 }}</ref>
+Chang'e 1 was launched on 24 October 2007 at 10:05:04 [[Coordinated Universal Time|UTC]] from [[Xichang Satellite Launch Center]].<ref>{{cite web|url=http://news.xinhuanet.com/english/2007-10/24/content_6937622.htm |archive-url=https://web.archive.org/web/20071025235924/http://news.xinhuanet.com/english/2007-10/24/content_6937622.htm |url-status=dead |archive-date=October 25, 2007 | title=China's 1st Moon orbiter enters Earth orbit | publisher=[[Xinhua News Agency]] | date=October 24, 2007 | access-date=2007-10-24}}</ref> It left [[lunar transfer orbit]] on 31 October and entered [[lunar orbit]] on 5 November.<ref>{{cite web |url=http://www.efluxmedia.com/news_Chinas_Change_I_Enters_Moon_Orbit_10279.html |title= China's Chang'e-I Enters Moon Orbit|website=www.efluxmedia.com |archive-url=https://web.archive.org/web/20071107081712/http://www.efluxmedia.com/news_Chinas_Change_I_Enters_Moon_Orbit_10279.html |archive-date=November 7, 2007}}</ref>
-The first picture of the Moon was relayed on 26 November 2007.<ref>{{cite web |url=http://www.cnsa.gov.cn/n615709/n620682/n639462/132125.html |title=China publishes first Moon picture |publisher=China National Space Administration |date=November 26, 2007 |accessdate=2007-11-26 |deadurl=yes |archiveurl=https://web.archive.org/web/20071128012548/http://www.cnsa.gov.cn/n615709/n620682/n639462/132125.html |archivedate=November 28, 2007 |df= }}</ref> On 12 November 2008, a map of the entire lunar surface was released, produced from data collected by Chang'e 1 between November 2007 and July 2008.<ref>{{cite web | url=http://mil.news.sina.com.cn/s/2008-11-12/1559529860.html | title=China publishes first map of whole lunar surface | date=12 November 2008 | accessdate=2008-11-12}}</ref><ref name="results">{{cite web | url=http://www.cjss.ac.cn/qikan/manage/wenzhang/2010-05-02.pdf | title=Chang'E-1 Lunar Mission: An Overview and Primary Science Results | format= PDF }}</ref>
+The first picture of the Moon was relayed on 26 November 2007.<ref>{{cite web |url=http://www.cnsa.gov.cn/n615709/n620682/n639462/132125.html |title=China publishes first Moon picture |publisher=China National Space Administration |date=November 26, 2007 |access-date=2007-11-26 |url-status=dead |archive-url=https://web.archive.org/web/20071128012548/http://www.cnsa.gov.cn/n615709/n620682/n639462/132125.html |archive-date=November 28, 2007 }}</ref> On 12 November 2008, a map of the entire lunar surface was released, produced from data collected by Chang'e 1 between November 2007 and July 2008.<ref>{{cite web | url=http://mil.news.sina.com.cn/s/2008-11-12/1559529860.html | title=China publishes first map of whole lunar surface | date=12 November 2008 | access-date=2008-11-12}}</ref><ref name="results">{{cite web | url=http://www.cjss.ac.cn/qikan/manage/wenzhang/2010-05-02.pdf | title=Chang'E-1 Lunar Mission: An Overview and Primary Science Results | access-date=2011-08-23 | archive-date=2016-11-09 | archive-url=https://web.archive.org/web/20161109223050/http://www.cjss.ac.cn/qikan/manage/wenzhang/2010-05-02.pdf | url-status=dead }}</ref>
-The mission was scheduled to continue for a year, but was later extended and the spacecraft operated until 1 March 2009, when it was taken out of orbit. It impacted the surface of the Moon at 08:13 UTC.<ref name="deorbit">{{cite web|url=http://news.xinhuanet.com/english/2009-03/01/content_10923205.htm | title=China's lunar probe Chang'e-1 impacts Moon | last=Guodong | first=Du | date=2009-03-01 | publisher=Xinhua | accessdate=2009-03-01}}</ref> Data gathered by Chang'e 1 was able to create an accurate and high resolution 3-D map of the lunar surface.<ref name="atimes.com">[http://www.atimes.com/atimes/China/LD16Ad01.html "China's map leaps over the moon"] ''Asia Times''</ref> Chang'e 1 is the first lunar probe to conduct passive, multi-channel, microwave remote sensing of the Moon by using a microwave radiator.<ref name="directory.eoportal.org">{{cite web|url=https://directory.eoportal.org/web/eoportal/satellite-missions/c-missions/chang-e-1|title=Chang'e-1 – eoPortal Directory – Satellite Missions|website=directory.eoportal.org}}</ref>
+The mission was scheduled to continue for a year, but was later extended and the spacecraft operated until 1 March 2009, when it was taken out of orbit. It impacted the surface of the Moon at 08:13 UTC.<ref name="deorbit">{{cite web|url=http://news.xinhuanet.com/english/2009-03/01/content_10923205.htm |archive-url=https://web.archive.org/web/20090302170937/http://news.xinhuanet.com/english/2009-03/01/content_10923205.htm |url-status=dead |archive-date=March 2, 2009 | title=China's lunar probe Chang'e-1 impacts Moon | last=Guodong | first=Du | date=2009-03-01 | publisher=Xinhua | access-date=2009-03-01}}</ref> Data gathered by Chang'e 1 was used to create an accurate and high resolution 3-D map of the lunar surface.<ref name="atimes.com">[https://web.archive.org/web/20100418193148/http://www.atimes.com/atimes/China/LD16Ad01.html "China's map leaps over the moon"] ''Asia Times''</ref> Chang'e 1 was the first lunar probe to conduct passive, multi-channel, microwave remote sensing of the Moon by using a microwave radiometer.<ref name="directory.eoportal.org">{{cite web|url=https://directory.eoportal.org/web/eoportal/satellite-missions/c-missions/chang-e-1|title=Chang'e-1 – eoPortal Directory – Satellite Missions|website=directory.eoportal.org}}</ref>
-Its sister orbital probe [[Chang'e 2]] was launched on 1 October 2010.<ref>{{cite web|url=http://www.bbc.co.uk/zhongwen/simp/china/2010/10/101001_china_satellite_moon.shtml |title=BBC 中文网 – 两岸三地 – 嫦娥二号奔月有助提升军事威慑力 |publisher=Bbc.co.uk |date=1970-01-01 |accessdate=2013-11-16}}</ref>
+Its sister orbital probe [[Chang'e 2]] was launched on 1 October 2010.<ref>{{cite web|url=http://www.bbc.co.uk/zhongwen/simp/china/2010/10/101001_china_satellite_moon.shtml |title=BBC 中文网 – 两岸三地 – 嫦娥二号奔月有助提升军事威慑力 |publisher=Bbc.co.uk |date=2010-10-01 |access-date=2013-11-16}}</ref>
 == Overview ==
-The [[Chinese Lunar Exploration Program]] is designed to be conducted in three phases of incremental technological advancement: The first is simply reaching lunar orbit, a task completed by Chang'e 1 in 2007 and [[Chang'e 2]] in 2010. The second is landing and roving on the Moon, as [[Chang'e 3]] did in 2013 and [[Chang'e 4]] did in 2019. The third is collecting lunar samples from the near-side and sending them to Earth, a task for the future [[Chang'e 5]] and [[Chang'e 6]] missions. The program aims to facilitate a crewed lunar landing in the 2030s and possibly build an outpost near the south pole.<ref>[https://qz.com/1262581/china-lays-out-its-ambitions-to-colonize-the-moon-and-build-a-lunar-palace/ China lays out its ambitions to colonize the moon and build a "lunar palace"]. Echo Huang, ''Quartz''. 26 April 2018.</ref>
+The [[Chinese Lunar Exploration Program]] is designed to be conducted in four <ref name='Jan 2019 press conference'>[https://www.youtube.com/watch?v=v7FiaHwv-BI Chang'e 4 press conference]. CNSA, broadcast on 14 January 2019.</ref> phases of incremental technological advancement: The first is simply reaching lunar orbit, a task completed by Chang'e 1 in 2007 and [[Chang'e 2]] in 2010. The second is landing and roving on the Moon, as [[Chang'e 3]] did in 2013 and [[Chang'e 4]] did in 2019. The third is collecting lunar samples from the near-side and sending them to Earth, a task for the [[Chang'e 5]] and [[Chang'e 6]] missions. The fourth phase consists of development of a robotic research station near the Moon's south pole.<ref name='Jan 2019 press conference'/><ref name='Planning by 2018'>[http://epizodsspace.airbase.ru/bibl/inostr-yazyki/Chinese_Journal_of_Space_Science/2018/5/Xu_et_al_China's_Planning_---_before_2030_Chin_J_Space_Sci_38_(2018).pdf China's Planning for Deep Space Exploration and Lunar Exploration before 2030]. (PDF) XU Lin, ZOU Yongliao, JIA Yingzhuo. ''Space Sci''., 2018, 38(5): 591-592. {{doi|10.11728/cjss2018.05.591}}</ref><ref>[http://adsabs.harvard.edu/abs/2018cosp...42E3886Z A Tentative Plan of China to Establish a Lunar Research Station in the Next Ten Years]. Zou, Yongliao; Xu, Lin; Jia, Yingzhuo. 42nd COSPAR Scientific Assembly. Held 14–22 July 2018, in Pasadena, California, USA, Abstract id. B3.1-34-18.</ref> The program aims to facilitate a crewed lunar landing in the 2030s and to possibly build an outpost near the south pole.<ref>[https://qz.com/1262581/china-lays-out-its-ambitions-to-colonize-the-moon-and-build-a-lunar-palace/ China lays out its ambitions to colonize the moon and build a "lunar palace"]. Echo Huang, ''Quartz''. 26 April 2018.</ref>
 == Objectives ==
-The Chang'e 1 mission had four major goals:<ref name="results" /><ref>{{cite web | url = http://www.esa.int/esaCP/SEMPM53Z28F_index_0.html | title = Chang'e-1 – new mission to Moon lifts off | publisher = [[European Space Agency]] | accessdate=2007-10-24}}</ref>
+The Chang'e 1 mission had four major goals:<ref name="results" /><ref>{{cite web | url = http://www.esa.int/esaCP/SEMPM53Z28F_index_0.html | title = Chang'e-1 – new mission to Moon lifts off | publisher = [[European Space Agency]] | access-date=2007-10-24}}</ref>
 # Obtaining three-dimensional images of the landforms and geological structures of the [[lunar surface]], so as to provide a reference for planned future soft landings. The orbit of Chang'e 1 around the Moon was designed to provide complete coverage, including areas near the north and south poles not covered by previous missions.
-# Analysing and mapping the abundance and distribution of various chemical elements on the lunar surface as part of an evaluation of potentially useful resources on the Moon. China hopes to extend the number of elements studied to 14 ([[potassium]] (K), [[thorium]] (Th), [[uranium]] (U), [[oxygen]] (O), [[silicon]] (Si), [[magnesium]] (Mg), [[aluminium]] (Al), [[calcium]] (Ca), [[tellurium]] (Te), [[titanium]] (Ti), [[sodium]] (Na), [[manganese]] (Mn), [[chromium]] (Cr), and [[lanthanum]] (La),<ref name=huixian/> compared with the 10 elements (K, U, Th, Fe ([[iron]]), Ti, O, Si, Al, Mg, and Ca)<ref>{{cite journal | journal = Science | date = 1998 | volume = 281 | issue = 5382 | pages = 1484–1489 | doi = 10.1126/science.281.5382.1484 | title = Global Elemental Maps of the Moon: The Lunar Prospector Gamma-Ray Spectrometer | author = D. J. Lawrence | display-authors = 4 | author2 = W. C. Feldman | author3 = B. L. Barraclough | author4 = A. B. Binder | author5 = R. C. Elphic | author6 = S. Maurice | author7 = D. R. Thomsen | pmid = 9727970 | bibcode=1998Sci...281.1484L}}</ref> previously probed by [[NASA]]'s [[Lunar Prospector]].
+# Analysing and mapping the abundance and distribution of various chemical elements on the lunar surface as part of an evaluation of potentially useful resources on the Moon. China hopes to extend the number of elements studied to 14 ([[potassium]] (K), [[thorium]] (Th), [[uranium]] (U), [[oxygen]] (O), [[silicon]] (Si), [[magnesium]] (Mg), [[aluminium]] (Al), [[calcium]] (Ca), [[tellurium]] (Te), [[titanium]] (Ti), [[sodium]] (Na), [[manganese]] (Mn), [[chromium]] (Cr), and [[lanthanum]] (La)),<ref name=huixian/> compared with the 10 elements (K, U, Th, Fe ([[iron]]), Ti, O, Si, Al, Mg, and Ca)<ref>{{cite journal | journal = Science | date = 1998 | volume = 281 | issue = 5382 | pages = 1484–1489 | doi = 10.1126/science.281.5382.1484 | title = Global Elemental Maps of the Moon: The Lunar Prospector Gamma-Ray Spectrometer | author = D. J. Lawrence | display-authors = 4 | author2 = W. C. Feldman | author3 = B. L. Barraclough | author4 = A. B. Binder | author5 = R. C. Elphic | author6 = S. Maurice | author7 = D. R. Thomsen | pmid = 9727970 | bibcode=1998Sci...281.1484L| doi-access = free }}</ref> previously probed by [[NASA]]'s [[Lunar Prospector]].
 # Probing the features of the lunar soil and assessing its depth, as well as the amount of [[helium-3]] (³He) present.<ref name=huixian/>
 # Probing the space environment between 40,000&nbsp;km. (24854.8&nbsp;mi) and 400,000&nbsp;km (248548.5&nbsp;mi) from the Earth, recording data on the solar wind and studying the impact of solar activity on the Earth and the Moon.
@@ Line 72: / Line 73: @@
 According to the schedule, detailed design of the first program milestone was completed by September 2004. Research and development of a prototype probe and relevant testing of the probe were finished before the end of 2005. Design, manufacture, general assembly, test and ground experiments of the lunar orbiter were finished before December 2006.{{citation needed|date=October 2017}}
-Originally scheduled for April 2007, the launch was postponed until October as this was "a better time for sending a satellite into the Moon's orbit".<ref>{{cite web | url=http://english.cri.cn/2906/2007/03/15/1261@205784.htm | title=Chang'e-1 Satellite Launch Delayed | publisher=[[China Radio International]] | date=March 15, 2007 | accessdate=2007-10-24}}</ref> Chang'e 1 was launched  by a [[Long March 3A]] rocket at 10:05 GMT on October 24, 2007 from [[Xichang Satellite Launch Center]] in [[Sichuan]] Province.
+Originally scheduled for April 2007, the launch was postponed until October as this was "a better time for sending a satellite into the Moon's orbit".<ref>{{cite web | url=http://english.cri.cn/2906/2007/03/15/1261@205784.htm | archive-url=https://web.archive.org/web/20070317225442/http://english.cri.cn/2906/2007/03/15/1261@205784.htm | url-status=dead | archive-date=March 17, 2007 | title=Chang'e-1 Satellite Launch Delayed | publisher=[[China Radio International]] | date=March 15, 2007 | access-date=2007-10-24}}</ref> Chang'e 1 was launched  by a [[Long March 3A]] rocket at 10:05 GMT on October 24, 2007, from [[Xichang Satellite Launch Center]] in [[Sichuan]] Province.
 After liftoff, Chang'e 1 made three orbits around the Earth, a burn at [[apsis|perigee]] extending the orbit's [[apsis|apogee]] further each time, until a final [[translunar injection]] burn placed it on course for the Moon on October 31, 2007.  Another burn placed it in a [[polar orbit]] around the Moon, with burns at the [[Apsis#Terminology|periselenium]] of the first three orbits decreasing the [[Apsis#Terminology|aposelenium]] until it entered a final circular orbit. Lunar orbit insertion was achieved on the November 5, 2007. To mark this occasion, the probe transmitted 30 classical Chinese songs and musical pieces, including "My Motherland", "The Song of the Yangtze River", and "High Mountains and Flowing Water".{{citation needed|date=October 2017}}
@@ Line 85: / Line 86: @@
 | author4=Wú Jì (吴季)
 | author5=Jiāng Jǐngshān (姜景山)
-| last-author-amp=yes
+| name-list-style=amp
 | journal=Journal of Earth System Science
 | date=2005
@@ Line 91: / Line 92: @@
 | pages=789–794
 | url=http://www.ias.ac.in/jessci/dec2005/ilc-25.pdf
-|format=PDF| doi=10.1007/BF02715964
+| doi=10.1007/BF02715964
 | issue=6
-|bibcode = 2005JESS..114..789H }}</ref> but operations were later extended, and it remained in lunar orbit until March 1, 2009.
+|bibcode = 2005JESS..114..789H | s2cid=128428662
+}}</ref> but operations were later extended, and it remained in lunar orbit until March 1, 2009.
 ==End of mission==
-On 1 March 2009, at 08:13:10 UTC, Chang'e 1 crashed onto the surface of the Moon, ending its mission. According to the State Administration of Science, Technology and Industry for National Defense (China), this was a planned and controlled impact.<ref name="AP">{{cite news | url=http://usatoday30.usatoday.com/tech/science/space/2009-03-02-china-lunar-crash_N.htm | title=China lunar probe mission ends with planned crash | agency=Associated Press | work=USA Today|accessdate=2009-03-02 | date=2009-03-02}}</ref> Impact point was {{Coord|1.50|S|52.36|E|globe:Moon|display=inline}}.<ref>{{cite web|url = https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2007-051A|title = NASA NSSDC Master Catalog – Chang'e 1|accessdate = 2011-01-01}}</ref><ref>{{cite web|url = http://english.peopledaily.com.cn/90001/90781/90876/6603492.html|website= China People's Daily Online | date=2 March 2009 |title=Chang'e-1 impacts Moon (coordinates) |accessdate = 2011-01-01}}</ref><ref>{{cite news | author= | title=Smackdown | work=Aviation Week & Space Technology | date=9 March 2009 | volume=70 | issue=10 | page=16 }}</ref>  During its orbital mission the probe transmitted 1,400 gigabits or 175 gigabytes (GB) of data.{{citation needed|date=October 2017}}
+On 1 March 2009, at 08:13:10 UTC, Chang'e 1 crashed onto the surface of the Moon, ending its mission. According to the State Administration of Science, Technology and Industry for National Defense (China), this was a planned and controlled impact.<ref name="AP">{{cite news | url=http://usatoday30.usatoday.com/tech/science/space/2009-03-02-china-lunar-crash_N.htm | title=China lunar probe mission ends with planned crash | agency=Associated Press | work=USA Today|access-date=2009-03-02 | date=2009-03-02}}</ref> Impact point was {{Coord|1.50|S|52.36|E|globe:Moon|display=inline}}.<ref>{{cite web|url = https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2007-051A|title = NASA NSSDC Master Catalog – Chang'e 1|access-date = 2011-01-01}}</ref><ref>{{cite web|url = http://english.peopledaily.com.cn/90001/90781/90876/6603492.html|website= China People's Daily Online | date=2 March 2009 |title=Chang'e-1 impacts Moon (coordinates) |access-date = 2011-01-01}}</ref><ref>{{cite news | title=Smackdown | work=Aviation Week & Space Technology | date=9 March 2009 | volume=70 | issue=10 | page=16 }}</ref>  During its orbital mission the probe transmitted 1,400 gigabits or 175 gigabytes (GB) of data.<ref>{{Cite web|title=Chang'e-1 - eoPortal Directory - Satellite Missions|url=https://directory.eoportal.org/web/eoportal/satellite-missions/c-missions/chang-e-1|access-date=2021-11-18|website=directory.eoportal.org}}</ref>
 == Design and instrumentation ==
@@ Line 106: / Line 108: @@
 * Imaging spectrometer
 * Gamma and X-ray spectrometer working in an energy range of 0.5 to 50 [[Electronvolt|keV]] for [[X-rays]] and 300 keV to 9 MeV for [[gamma ray]]s
-* [[Microwave radiometer]] detecting 3, 7.8, 19.35 and 37 [[Hertz|GHz]] with a maximal penetration depth of 30, 20, 10, 1 m (98.4, 65.6, 32.8, 3.3&nbsp;ft) and a [[thermal]] resolution of 0.5 K
+* [[Microwave radiometer]] detecting 3, 7.8, 19.35 and 37 [[Hertz|GHz]] with a maximal penetration depth of 30, 20, 10, 1 m (98.4, 65.6, 32.8, 3.3&nbsp;ft) and a [[Temperature|thermal]] resolution of 0.5 K
 * [[High energy particle]] detector and two [[solar wind]] detectors capable of the detection of [[electron]]s and heavy [[ion]]s up to 730 MeV
@@ Line 115: / Line 117: @@
 ==See also==
-{{Portal|Solar System|Spaceflight|China}}
+{{Portal|Spaceflight}}
 * [[Chinese space program]]
 ** [[Chinese Lunar Exploration Program]] (CLEP)
 * [[Exploration of the Moon]]
-* [[List of future lunar missions]]
+* [[List of missions to the Moon]]
-* [[Robotic exploration of the Moon]]
 * [[List of artificial objects on the Moon]]
@@ Line 127: / Line 128: @@
 ==External links==
+{{Commons category}}
 {{wikinews|China launches space probe to the Moon}}
 * [https://web.archive.org/web/20071015034940/http://www.clep.org.cn/ CLEP Official site]
 * [https://web.archive.org/web/20071028145842/http://solarsystem.nasa.gov/missions/profile.cfm?MCode=CHANGE1 Chang'e 1 Mission Profile] by [http://solarsystem.nasa.gov NASA's Solar System Exploration]
 * [https://web.archive.org/web/20070408085556/http://astronautix.com/craft/change.htm Encyclopedia Astronautica]
-* [https://web.archive.org/web/20071026112423/http://www.geog.umd.edu/ispmsrs2005/OuyangZiyuanAbs.htm The Scientific Objectives of Chinese Lunar Exploration Project by Ouyang Ziyuan]
-* [https://www.youtube.com/watch?v=hUcD9M3cxaQ YouTube video of launch]
-* [http://www.cctv.com/english/special/Change1/01/index.shtml Chinese State Media Coverage (CCTV) in English]
-* [https://web.archive.org/web/20071110000016/http://starrymirror.com/chineselunarprobe1101.htm Europe, China Cooperate To Radio Lunar Probe]
-* [http://in.reuters.com/article/topNews/idINIndia-36091120081022  FACTBOX – Reuters – Planned lunar missions]
-* [http://in.reuters.com/article/topNews/idINIndia-36089520081022 Reuters: CHRONOLOGY – Five key dates in the race to the Moon]
 {{Moon spacecraft}}
 {{CLEP}}
 {{Chinese spacecraft}}
+{{Chinese space program}}
 {{Solar System probes}}
 {{Orbital launches in 2007}}
@@ Line 150: / Line 147: @@
 [[Category:2007 in China]]
 [[Category:Spacecraft that impacted the Moon]]
+[[Category:2009 on the Moon]]
+[[Category:Spacecraft launched by Long March rockets]]

v t e Chinese Lunar Exploration Program
China National Space Administration Chinese space program
Missions	Chang'e 1 (Oct 2007) Chang'e 2 (Oct 2010) Chang'e 3 (Dec 2013) Yutu rover Chang'e 5-T1 (Oct 2014) Queqiao (relay satellite, May 2018) Chang'e 4 (Dec 2018) Yutu-2 rover Chang'e 5 (Nov 2020) Queqiao 2 (relay satellite, Mar 2024) Tiandu 1 and 2 Chang'e 6 (May 2024) Chang'e 7 (2026) Chang'e 8 (2028)
Launch vehicles	Long March 3A Long March 3B Long March 3C Long March 5 Long March 8
Facilities	Xichang Satellite Launch Center Wenchang Spacecraft Launch Site
People	Zhang Qingwei Ouyang Ziyuan Ma Xingrui Ye Peijian
Category Commons

v t e Chinese spacecraft
Earth observation	Double Star (joint with ESA) Fengyun Gaofen FSW Huanjing HY Jilin Shiyan SMMS TanSat Tansuo Tianhui Yaogan Ziyuan
Communication and engineering	Dong Fang Hong FH-1 Apstar APMT Asiasat ChinaSat ChinaStar HKSTG LGSP OlympicSat Qianfan Shijian Sinosat Tiantong 1 Tsinghua-1 Xiwang 1
Data relay satellite system	Queqiao and Queqiao 2 Tiandu 1 and 2 Tianlian Constellation
Satellite navigation system	BeiDou-1 BeiDou-2 Beidou-3
Astronomical observation	ASO-S CHASE DAMPE GECAM HXMT Kuafu Longjiang-2 Queqiao Lobster Eye Imager for Astronomy Einstein Probe (joint with ESA) SST SVOM Xuntian SMILE
Lunar exploration	Chinese Lunar Exploration Program Chang'e 1 Chang'e 2 Chang'e 3 Yutu Chang'e 5-T1 Chang'e 4 Yutu-2 Chang'e 5 Chang'e 6 Chang'e 7 Chang'e 8
Planetary exploration	Yinghuo-1 Chang'e 2 Tianwen-1 Zhurong Shensuo Tianwen-2 Tianwen-3 Tianwen-4
Microsatellites	Fengniao Xinyan
Future spacecraft in italics.

v t e ← 2006 Orbital launches in 2007 2008 →
January	Cartosat-2, SRE-1, Lapan-TUBsat, Pehuensat-1 Progress M-59 NSS-8
February	Beidou-1D THEMIS A, THEMIS B, THEMIS C, THEMIS D, THEMIS E IGS Radar 2, IGS Optical 3V
March	ASTRO, CFESat, FalconSAT-3, MidSTAR-1, NEXTSat, STPSat-1 Skynet 5A, INSAT-4B
April	Soyuz TMA-10 Anik F3 Hai Yang 1B Compass-M1 EgyptSat 1, Saudisat-3, SaudiComsat-3, SaudiComsat-4, SaudiComsat-5, SaudiComsat-6, SaudiComsat-7, CP-3, CP-4, CAPE-1, Libertad 1, AeroCube 2, CSTB-1, MAST AGILE, AAM NFIRE AIM
May	Astra 1L, Galaxy 17 Progress M-60 NigComSat-1 Yaogan 2, Zheda PiXing 1 Globalstar 65, Globalstar 69, Globalstar 71, Globalstar 72 Sinosat-3
June	Kosmos 2427 COSMO-1 STS-117 (ITS S3/4) Ofek-7 TerraSAR-X USA-194 Genesis II Kosmos 2428
July	SAR-Lupe 2 Zhongxing 6B DirecTV-10
August	Progress M-61 Phoenix STS-118 (ITS S5, SpaceHab LSM) Spaceway-3, BSAT-3a
September	INSAT-4CR JCSAT-11 Kosmos 2429 Kaguya (Okina, Ouna) Foton-M No.3, YES2 WorldView-1 CBERS-2B Dawn
October	Intelsat 11, Optus D2 Soyuz TMA-11 USA-195 USA-196 Globalstar 66, Globalstar 67, Globalstar 78, Globalstar 70 Kosmos 2430 STS-120 (Harmony) Chang'e 1 Kosmos 2431, Kosmos 2432, Kosmos 2433
November	SAR-Lupe 3, Rubin-7 USA-197 Yaogan 3 Skynet 5B, Star One C1 Sirius 4
December	Globus-1M No.11L COSMO-2 USA-198 Radarsat-2 USA-199 Horizons-2, Rascom-QAF 1 Progress M-62 Kosmos 2434, Kosmos 2435, Kosmos 2436
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).