Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor

Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM) (Chinese: 引力波暴高能电磁对应体全天监测器) is a space observatory composed of a constellation of two X-ray and gamma-ray all-sky observing small satellites, called GECAM A (aka KX 08A or Xiaoji, COSPAR 2020-094A) and GECAM B (aka KX 08B or Xiaomu, COSPAR 2020-094B), for research in electromagnetic counterparts of gravitational waves (GWs). It was launched on 9 December 2020 from the Xichang Satellite Launch Center at 20:14 UTC by a Long March 11 rocket. GECAM will focus on detecting electromagnetic counterparts of gravitational waves. In addition to signals from GWs, the observatory studies Ultra-long GRBs, X-ray Flashes, X-ray-rich GRBs, Magnetars and Terrestrial Gamma-ray Flashes.

References

"China plans to launch new space science satellites". The State Council, Th ePeople's Republic of China. November 27, 2020.
"China launches GECAM all-sky scanner to study extreme cosmic events". Physics World. December 10, 2020.
"GECAM A, B (KX 08A, 08B / Xiaoji, Xiaomu)".

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.

Chinese space program

Spaceports and landing sites	Jiuquan Taiyuan Wenchang Xichang Siziwang Banner (landing site)
Launch vehicles	Long March 1 Long March 2 Long March 3 Long March 3A Long March 3B Long March 3C Long March 4 Long March 4A Long March 4B Long March 4C Long March 5 Long March 6 Long March 7 Long March 8 Long March 9 (In development) Long March 10 (In development) Long March 11 Long March 12 Kuaizhou Kaituozhe
Exploration programs	Shuguang (cancelled) CMS (human spaceflight) Chang'e (lunar exploration) Tiangong (space station) Tianwen (interplanetary exploration)

Projects and missions

Science

Planetary science	Chang'e 1 (2007–09) Chang'e 2 (2010–present) Yinghuo 1† (2011) Chang'e 3 (2013–present) Chang'e 5-T1 (2014–present) Yutu rover (2013–2016) Chang'e 4 (2018–present) Yutu-2 rover (2018–present) Tianwen-1 (2020–present) Chang'e 5 (2020–present) Zhurong rover (2021–present) Chang'e 6 (2024) Tianwen-2 (2025) Chang'e 7 (2026) Chang'e 8 (2028) Tianwen-3 (2028) Tianwen-4 (2029)
Astronomy and cosmology	DAMPE (2015–present) HXMT (2017–present) GECAM (2020–present) CHASE (2021–present) ASO-S (2022–present) Einstein Probe (2024–present) SVOM (2024–present) Xuntian (2026) Space Solar Telescope
Earth observation	CSES (2018–present) Double Star (2003–07) Gaofen Series (2013–present) Haiyang Series (2002–present) TanSat (2016–present) Yaogan Series (2006–present) Ziyuan Series (CBERS) (1999–present) SMILE (2025)

Human
spaceflight

Uncrewed expeditions	Shenzhou 1 Shenzhou 2 Shenzhou 3 Shenzhou 4 Shenzhou 8
Crewed expeditions	Shenzhou 5 Shenzhou 6 Shenzhou 7 Shenzhou 9 Shenzhou 10 Shenzhou 11 Shenzhou 12 Shenzhou 13 Shenzhou 14 Shenzhou 15 Shenzhou 16 Shenzhou 17 Shenzhou 18 (List of Chinese astronauts)
Space laboratories and cargos	Tiangong 1 (2011–2018) Tiangong 2 (2016–2019) Tianzhou 1 (2017) Tianzhou 2 (2021) Tianzhou 3 (2021) Tianzhou 4 (2022) Tianzhou 5 (2022) Tianzhou 6 (2023)
Tiangong space station modules	Tianhe (2021–present) Wentian (2022–present) Mengtian (2022–present)

Navigation

BeiDou Navigation Satellite System (BDS)

Telecommunications

Apstar Series (1994–present)
Chinasat Series (1994–present)
Queqiao (2018–present)
Tiandu 1 and 2 (2024–present)
Tianlian I (2008–present)
Tianlian II (2019–present)
Qianfan (2024–present)
Queqiao 2 (2024–present)

Technology
demonstrators

Chinese reusable experimental spacecraft (2020)
FSW Program (1969–2006)
QUESS (2016–present)
Shijian Series (1971–present)
XPNAV 1 (2016–present)

Lanyue Lunar Lander

Future missions marked in italics. Failed missions marked with † sign

Space telescopes

Operating

Radio and Microwave	NCLE (since 2018) Solar Orbiter (since 2020) STEREO (since 2006) Queqiao (since 2018) Wind (since 1994) Queqiao 2 (since 2024)
Infrared	Odin (since 2001) SOLAR (since 2008) James Webb (since 2022)
Optical	Aoi (since 2018) Astrosat (since 2015) BRITE constellation (since 2013) CHASE (since 2021) CHEOPS (since 2019) DSCOVR (since 2015) Euclid (since 2023) Hayabusa2 (since 2021) Gaia (since 2013) HiRISE (since 2005) Hubble (since 1990) Hinode (Solar-B) (since 2006) NEOSSat (since 2013) Odin (since 2001) SDO (since 2010) SOHO (since 1995) SOLAR (since 2008) Swift (since 2004) TESS (since 2018) PROBA-3 (since 2024)
Ultraviolet	Aditya-L1 (since 2023) ASO-S (since 2022) Astrosat (since 2015) Hibari (since 2021) Hinode (Solar-B) (since 2006) IRIS (since 2013) SDO (since 2010) SOHO (since 1995) SOLAR (since 2008) Solar Orbiter (since 2020) STEREO (since 2006) Swift (since 2004) PROBA-3 (since 2024)
X-ray and Gamma-ray	CALET (since 2015) Chandra (AXAF) (since 1999) DAMPE (since 2015) Einstein Probe (since 2024) HXMT (Insight) (since 2017) INTEGRAL (since 2002) Fermi (since 2008) GECAM (since 2020) IXPE (since 2021) Spektr-RG (since 2019) SVOM (since 2024) Swift (since 2004) Max Valier Sat (since 2017) MAXI (since 2009) MinXSS-2 (since 2018) NICER (since 2017) NuSTAR (since 2012) LEIA (since 2022) XRISM (since 2023) XPoSat (since 2024) XMM-Newton (since 1999)
Other (particle or unclassified)	ACE (since 1997) AMS-02 (since 2011) CALET (since 2015) DAMPE (since 2015) IBEX (since 2008) ISS-CREAM (since 2017) Mini-EUSO (since 2019) SOHO (since 1995) Solar Orbiter (since 2020) STEREO (since 2006)

Planned

PETREL (2025)
SPHEREx (2025)
K-EUSO (2026)
Nancy Grace Roman Space Telescope (2026)
PLATO (2026)
Xuntian (2026)
COSI (2027)
LORD (2027)
NEO Surveyor (2027)
JASMINE (2028)
Solar-C EUVST (2028)
ARIEL (2029)
Spektr-UV (2030)
UVEX (2030)
Spektr-M (2030+)
LiteBIRD (2032)
Taiji (2033)
Athena (2035)
LISA (2035)

Proposed

Retired

AGILE (2007–2024)
Akari (Astro-F) (2006–2011)
ALEXIS (1993–2005)
Alouette 1 (1962–1972)
Ariel 1 (1962, 1964)
Ariel 2 (1964)
Ariel 3 (1967–1969)
Ariel 4 (1971–1972)
Ariel 5 (1974–1980)
Ariel 6 (1979–1982)
ASTERIA (2017–2019)
ATM (1973–1974)
ASCA (Astro-D) (1993–2000)
Astro-1 (1990)
- BBXRT
- HUT
Astro-2 (HUT) (1995)
Astron (1983–1991)
ANS (1974–1976)
BeppoSAX (1996–2003)
CHIPSat (2003–2008)
Compton (CGRO) (1991–2000)
CoRoT (2006–2013)
Cos-B (1975–1982)
COBE (1989–1993)
CXBN-2 (2017–2019)
DXS (1993)
EPOCh (2008)
EPOXI (2010)
Explorer 11 (1961)
EXOSAT (1983–1986)
EUVE (1992–2001)
FUSE (1999–2007)
Kvant-1 (1987–2001)
GALEX (2003–2013)
Gamma (1990–1992)
Ginga (Astro-C) (1987–1991)
Granat (1989–1998)
Hakucho (CORSA-b) (1979–1985)
HALCA (MUSES-B) (1997–2005)
HEAO-1 (1977–1979)
Herschel (2009–2013)
Hinotori (Astro-A) (1981–1991)
Hisaki (SPRINT-A) (2013–2023)
HEAO-2 (Einstein Obs.) (1978–1982)
HEAO-3 (1979–1981)
HETE-2 (2000–2008)
Hipparcos (1989–1993)
ILO-X (2024)
IRAS (1983)
IRTS (1995–1996)
ISO (1996–1998)
IUE (1978–1996)
IXAE (1996–2004)
Kepler (2009–2018)
Kristall (1990–2001)
LEGRI (1997–2002)
LISA Pathfinder (2015–2017)
MinXSS (2015–2017)
MOST (2003–2019)
MSX (1996–1997)
Mikhailo Lomonosov (2016–2019?)
OAO-2 (1968–1973)
OAO-3 (Copernicus) (1972–1981)
Orbiting Solar Observatory
- OSO 1
- OSO B
- OSO 3
- OSO 4
- OSO 5
- OSO 6
- OSO 7
- OSO 8
Orion 1 (1971)
Orion 2 (1973)
PAMELA (2006–2016)
PicSat (2018)
Planck (2009–2013)
RELIKT-1 (1983–1984)
R/HESSI (2002–2018)
ROSAT (1990–1999)
RXTE (1995–2012)
SAMPEX (1992–2004)
SAS-B (1972–1973)
SAS-C (1975–1979)
Solwind (1979–1985)
Spektr-R (2011–2019)
Spitzer (2003–2020)
Suzaku (Astro-EII) (2005–2015)
Taiyo (SRATS) (1975–1980)
Tenma (Astro-B) (1983–1985)
Uhuru (1970–1973)
Vanguard 3 (1959)
WMAP (2001–2010)
WISE (2009–2024)
Yokoh (Solar-A) (1991–2001)

Hibernating
(Mission completed)

SWAS (1998–2005)
TRACE (1998–2010)

Lost/Failed

OAO-1 (1966)
OAO-B (1970)
CORSA (1976)
CXBN (2012–2013)
OSO C (1965)
ABRIXAS (1999)
HETE-1 (1996)
WIRE (1999)
Astro-E (2000)
Tsubame (2014–2015)
Hitomi (Astro-H) (2016)

Cancelled

Great Observatories program
List of space telescopes
List of proposed space telescopes
X-ray telescope
List of heliophysics missions
List of planetariums
Hubble (2010 documentary)
Unknown: Cosmic Time Machine (2023 documentary)

Category:Space telescopes

v t e ← 2019 Orbital launches in 2020 2021 →
January	Starlink V1.0-L2 (60 satellites) TJS-5 Jilin-1 Kuanfu-01, ÑuSat 7, ÑuSat 8 Eutelsat Konnect, GSAT-30 Starlink V1.0-L3 (60 satellites) USA-294
February	OneWeb L2 (34 satellites) IGS-Optical 7 Solar Orbiter (TechEdSat-10) Cygnus NG-13 Starlink V1.0-L4 (60 satellites) JCSAT-17 Meridian-M 9
March	SpaceX CRS-20 (Lynk 04) BeiDou-3 G2Q Kosmos 2545 / GLONASS-M 760 Starlink V1.0-L5 (60 satellites) OneWeb L3 (34 satellites) Yaogan 30-06 (3 satellites) USA-298 / AEHF-6
April	Soyuz MS-16 Noor Starlink V1.0-L6 (60 satellites) Progress MS-14
May	Chinese next-generation crewed spacecraft / Flexible Inflatable Cargo Return Module Xingyun-2 01, 02 X-37B OTV-6 / FalconSAT-8 HTV-9 EKS-4 LauncherOne†, Starshine 4† XJS-G, XJS-H Crew Dragon Demo-2
June	Starlink 7 (60 satellites) Starlink 8 (58 satellites)
July	Gaofen DUOMO Flock-4e × 5† Shiyan 6-02 Ofek-16 Apstar 6D Jilin-1 Gaofen-02E† USA-305, USA-306, USA-307, USA-308 Emirates Mars Mission ANASIS-II Tianwen-1 (Zhurong) Progress MS-15 Ziyuan III-03 Mars 2020 (Perseverance, Ingenuity) Ekspress-80, Ekspress-103
August	Gaofen 9-04 Starlink V1.0-L9 (57 satellites), BlackSky Global 7, BlackSky Global 8 BSAT-4b, Galaxy 30, MEV-2 Starlink V1.0-L10 (58 satellites), SkySat × 3 Gaofen 9-05 SAOCOM 1B Capella 2, Photon First Light
September	ION-SCV 001 (Flock-4v × 12), ÑuSat 6, UPM-Sat 2, Flock-4v × 14, Lemur-2 × 8, NAPA-1, SpaceBEE × 12 Starlink V1.0-L11 (60 satellites) Chinese reusable experimental spacecraft Gaofen 11-02 Jilin-1 Gaofen-02C† Jilin-1 Gaofen-03B × 6, Jilin-1 Gaofen-03C × 3 HaiYang 2C Huanjing 2A, Huanjing 2B Gonets-M × 3, ICEYE X6, ICEYE X7, Kepler 4, Kepler 5, LacunaSat-3, Lemur-2 × 4
October	Cygnus NG-14 (Lemur-2 × 2, SPOC) Starlink V1.0-L12 (60 satellites) Gaofen-13 Soyuz MS-17 Starlink V1.0-L13 (60 satellites) Starlink V1.0-L14 (60 satellites) Kosmos 2547 / GLONASS-K 15L Yaogan 30-07 (3 satellites) Flock-4e' × 9
November	USA-309 / GPS IIIA-04 ÑuSat × 10 EOS-01 / RISAT-2BR2, KSM × 4, Lemur-2 × 4 Tiantong-1 02 USA-310 / NROL-101 SpaceX Crew-1 SEOSat-Ingenio†, TARANIS† Landmapper-BC 5, SpaceBEE × 18 Sentinel-6 Chang'e 5 Starlink V1.0 L15 (60 satellites)
December	Gonets-M × 3, Kosmos 2548 / ERA-1 Gaofen 14 SpaceX CRS-21 (Nanoracks Bishop Airlock) GECAM A, GECAM B USA-311 / Orion 10 SXM-7 CMS-01 / GSAR-12R OneWeb L4 (36 satellites) USA-312, USA-313 Yaogan 33 CSO-2
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).

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