Jump to content

List of exoplanet search projects

From Wikipedia, the free encyclopedia

The following is a list of exoplanet search projects.

Ground-based search projects[edit]

Project name Status Number of exoplanets found Notes
Anglo-Australian Planet Search (AAPS) Active 28 (as of February 2014)
Automated Planet Finder (APF) Active 0 based at the Lick Observatory (also known as the Rocky Planet Finder)[1]
Carl Sagan Institute Active 0
CARMENES[2] Active 20+ based at Calar Alto Observatory
CORALIE spectrograph Active 5 based at Leonhard Euler Telescope
East-Asian Planet Search Network (EAPSNET) Active 1
ELODIE Decommissioned 4
EPICS Future (2030?) N/A based at the E-ELT[3][4]
ESPRESSO Active N/A based at the VLT[5][6]
EXPRES Active N/A based at the Lowell Discovery Telescope[7]
FINDS Exo-Earths Active 0 based at the 3m telescope at Lick Observatory[8]
Gemini Planet Imager (GPI) Active 1 [9]
Geneva Extrasolar Planet Search Active 1+
High Accuracy Radial Velocity Planet Searcher (HARPS) Active 130+ [10]
HARPS-N Active 18+[11]
HATNet and HATSouth Projects (HAT) Active 109 [12][13]
Hunt for Exomoons with Kepler (HEK) Active 0 (A few candidates, including Kepler-1625 b I)
HiCIAO Active 0
High Resolution Echelle Spectrometer (HIRES) Active 7+[14] based at the W. M. Keck Observatory
KELT Decommissioned[15] 26[15]
Lick–Carnegie Exoplanet Survey (LCES) Active 1+
Magellan Planet Search Program Active 10+
MARVELS Active 1+[16]
MASCARA Active 5[17]
MEarth Project Active 3[18]
Microlensing Follow-Up Network (MicroFUN) Merged with PLANET 10
Microlensing Observations in Astrophysics (MOA) Active 8 Mt. John University Observatory
MINiature Exoplanet Radial Velocity Array (MINERVA) Active 0
N2K Consortium Active 7
New Mexico Exoplanet Spectroscopic Survey Instrument (NESSI) Active 0
Next-Generation Transit Survey (NGTS) Active 20[19][20][21][22][23][24][25][26][27] at Paranal, since 2015
Okayama Planet Search Program (OPSP) Active 6
Optical Gravitational Lensing Experiment (OGLE) Active 17+
PlanetPol Decommissioned 0
PRL Advanced Radial-velocity All-sky Search (PARAS) Active 3[28][29][30] Spectrograph integrated with the 1.2m Gurushikhar Observatory in Mount Abu, India.
Project 1640 Active 0+
Qatar Exoplanet Survey (QES) Active 9 [31]
Search for extraterrestrial intelligence (SETI) Active 0
SOPHIE échelle spectrograph Active 0+ [32]
Spectro-Polarimetric High-Contrast Exoplanet Research (SPHERE) Active 1+[33]
SPECULOOS Commissioning - Searching 1,200 nearby "Ultra Cool Dwarfs" (M7 and later). Successor to TRAPPIST.[34]
Strategic Explorations of Exoplanets and Disks with Subaru (SEEDS) Active 1+ [35]
SuperWASP (WASP) Active 191[36] [37]
Systemic Active 0 an amateur search project
The Habitable Exoplanet Hunting Project Active 1 (candidate)[38][39] International network of more than 30 observatories including universities and amateur astronomers.
Trans-Atlantic Exoplanet Survey (TrES) Decommissioned 5
Transiting Planets and Planetesimals Small Telescope (TRAPPIST) Active 7 Searching 50 nearby "Ultra Cool Dwarfs" (M7 and later). Prototype for SPECULOOS.
XO Telescope (XO) Active 7
ZIMPOL/CHEOPS Active 0 subsystem of the VLT-SPHERE instrument, based at the VLT[40]
COCONUTS Active 3[41][42][43] Large-scale survey for wide-orbit planetary and substellar companions[44]

Space missions[edit]

Past and current[edit]

Name Launch date End date Number of exoplanets found Current candidates Telescope use
MOST June 20, 2003 March 2019 1+ 0 First spacecraft dedicated to the study of asteroseismology
EPOXI July 21, 2005 August 8, 2013 0 0 Characterized planets and fly-by of comet
SWEEPS 2006 2006 16 0 Based from the HST, a short 7 day mission looking for exoplanets
CoRoT December 27, 2006 November 2, 2012 34 600 Mission to look for exoplanets using the transit method
Kepler March 7, 2009 August 15, 2013 3,246 4711 Mission to look for large numbers of exoplanets using the transit method
K2 November 18, 2013 October 30, 2018 427 891 (+627 microlensing events) After the reaction wheels failed on Kepler, this mission was created
Gaia December 19, 2013 Ongoing 0 0 Map 1 billion astronomical objects in the Milky Way (First data Release November 2, 2016)
ASTERIA November 2017 December 5, 2019 0 0 CubeSat, technology demonstrator
TESS April 18, 2018 Ongoing 233+ 3,876 To search for new exoplanets; rotating so by the end of its two-year mission it will have observed stars from all over the sky. It is expected to find at least 3,000 new exoplanets.
CHEOPS 2019[45] Ongoing 2+ 0 To learn more about how exoplanets form, probe atmospheres, and characterize super-Earths. 20% of time will be open to community use.[46] Duration: 3.5 (+ 1.5 goal) years
JWST Commissioned on 25, December 2021 Ongoing 1 0 To study atmospheres of known exoplanets and find some Jupiter-sized exoplanets Duration: 5 (+ 5 goal) years
2,757 (3,941 Total)[47] 3,914


Name Launch date Mission objectives Duration PLATO 2026 (Ariane 62) To search for and characterize rocky planets around stars like our own. 4 (+4 goal) years
ARIEL 2029 (Ariane 62) Observe exoplanets using the transit method, study and characterise the planets' chemical composition and thermal structures 4 years
RST 2026 To search for and study exoplanets while studying dark matter. It is expected to find about 2,500 planets. 6 years
TOLIMAN 2024 Detect exoplanets in Alpha Centauri using astrometry. 3 years




  1. ^ "Mt. Hamilton Telescopes: Carnegie Double Astrograph". www.ucolick.org. Retrieved 2016-07-08.
  2. ^ "carmenes". carmenes. Retrieved 2018-06-08.
  3. ^ "E-ELT". www.eelt.org.uk. Retrieved 2016-07-08.
  4. ^ ESO. "ESO - The European ELT". www.eso.org. Retrieved 2016-07-08.
  5. ^ ESO. "ESO - Espresso". www.eso.org. Retrieved 2016-07-08.
  6. ^ F., Pepe; P., Molaro; S., Cristiani; R., Rebolo; C., Santos, N.; H., Dekker; D., Mégevand; M., Zerbi, F.; A., Cabral (2014-01-23). "ESPRESSO: The next European exoplanet hunter". arXiv:1401.5918 [astro-ph.IM].{{cite arXiv}}: CS1 maint: multiple names: authors list (link)
  7. ^ Jurgenson, C.; Fischer, D.; McCracken, T.; Sawyer, D.; Szymkowiak, A.; Davis, A.; Muller, G.; Santoro, F. (2016). "EXPRES: A next generation RV spectrograph in the search for earth-like worlds". In Evans, Christopher J; Simard, Luc; Takami, Hideki (eds.). Ground-based and Airborne Instrumentation for Astronomy VI. Vol. 9908. pp. 99086T. arXiv:1606.04413. doi:10.1117/12.2233002. S2CID 119210955.
  8. ^ "FINDS Exo-Earths". www.planetary.org. Retrieved 2016-07-08.
  9. ^ "Planet Imager » About". planetimager.org. 21 August 2015. Retrieved 2016-07-08.
  10. ^ ESO. "ESO - HARPS". www.eso.org. Retrieved 2016-07-08.
  11. ^ "Confirmed Planets". Exoplanet Archive. Caltech. Retrieved 1 February 2020.
  12. ^ "HATNet / Planets". hatnet.org. The HATNet Exoplanet Survey. Retrieved 8 June 2018.
  13. ^ "HATSouth / Planets". hatsouth.org. The HATSouth Exoplanet Survey. Retrieved 8 June 2018.
  14. ^ Butler, R. Paul; Marcy, Geoffrey W.; Vogt, Steven S.; Fischer, Debra A.; Henry, Gregory W.; Laughlin, Gregory; Wright, Jason T. (2003). "Seven New Keck Planets Orbiting G and K Dwarfs". The Astrophysical Journal. 582 (1): 455–466. Bibcode:2003ApJ...582..455B. doi:10.1086/344570. S2CID 17608922.
  15. ^ a b "KELT Transit Search to conclude after 17 years of work". keltsurvey.org. Retrieved 14 April 2020.
  16. ^ Ma(馬波), Bo; et al. (2016). "Very Low-Mass Stellar and Substellar Companions to Solar-Like Stars from Marvels. Vi. A Giant Planet and a Brown Dwarf Candidate in a Close Binary System Hd 87646". The Astronomical Journal. 152 (5): 112. arXiv:1608.03597. Bibcode:2016AJ....152..112M. doi:10.3847/0004-6256/152/5/112. S2CID 118506921.
  17. ^ Dorval, P.; et al. (2020). "MASCARA-4 b/B Ring-1 b: A retrograde hot Jupiter around a bright A-type star". Astronomy & Astrophysics. 635: A60. arXiv:1904.02733. Bibcode:2020A&A...635A..60D. doi:10.1051/0004-6361/201935611. S2CID 102351446.
  18. ^ "The MEarth Project: Discoveries". Harvard–Smithsonian Center for Astrophysics. Retrieved 2020-05-23.
  19. ^ Next Generation Transit Survey Finds its First Planet, NGTS-1b. Sci Tech Daily. October 31, 2017
  20. ^ Günther, Maximilian N.; et al. (2018). "Unmasking the hidden NGTS-3Ab: A hot Jupiter in an unresolved binary system". Monthly Notices of the Royal Astronomical Society. 478 (4): 4720–4737. arXiv:1805.01378. Bibcode:2018MNRAS.478.4720G. doi:10.1093/mnras/sty1193. S2CID 119072135.
  21. ^ Raynard, Liam; et al. (2018). "NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf". Monthly Notices of the Royal Astronomical Society. 481 (4): 4960–4970. arXiv:1805.10449. Bibcode:2018MNRAS.481.4960R. doi:10.1093/mnras/sty2581. S2CID 54591252.
  22. ^ Acton, Jack S.; Goad, Michael R.; Burleigh, Matthew R.; Casewell, Sarah L.; Breytenbach, Hannes; Nielsen, Louise D.; Smith, Gareth; Anderson, David R.; Battley, Matthew P.; Bayliss, Daniel; Bouchy, François (2021-06-12). "NGTS-19b : A high mass transiting brown dwarf in a 17-day eccentric orbit". Monthly Notices of the Royal Astronomical Society. 505 (2): 2741–2752. arXiv:2105.08574. doi:10.1093/mnras/stab1459. ISSN 0035-8711.
  23. ^ Ulmer-Moll, S.; Lendl, M.; Gill, S.; Villanueva, S.; Hobson, M. J.; Bouchy, F.; Brahm, R.; Dragomir, D.; Grieves, N.; Mordasini, C.; Anderson, D. R. (2022-07-08). "Two long-period transiting exoplanets on eccentric orbits: NGTS-20 b (TOI-5152 b) and TOI-5153 B". Astronomy & Astrophysics. 666: A46. arXiv:2207.03911. Bibcode:2022A&A...666A..46U. doi:10.1051/0004-6361/202243583. S2CID 250408027.
  24. ^ Tilbrook, Rosanna H.; Burleigh, Matthew R.; Costes, Jean C.; Gill, Samuel; Nielsen, Louise D.; Vines, José I.; Queloz, Didier; Hodgkin, Simon T.; Worters, Hannah L.; Goad, Michael R.; Acton, Jack S. (2021-05-25). "NGTS 15b, 16b, 17b and 18b: four hot Jupiters from the Next Generation Transit Survey". Monthly Notices of the Royal Astronomical Society. 504 (4): 6018–6032. arXiv:2103.10302. doi:10.1093/mnras/stab815. ISSN 0035-8711.
  25. ^ Bryant, Edward M.; Bayliss, Daniel; Nielsen, Louise D.; Veras, Dimitri; Acton, Jack S.; Anderson, David R.; Armstrong, David J.; Bouchy, Francois; Briegal, Joshua T.; Burleigh, Matthew R.; Cabrera, Juan (2020-10-24). "NGTS-12b: A sub-Saturn mass transiting exoplanet in a 7.53 day orbit". Monthly Notices of the Royal Astronomical Society. 499 (3): 3139–3148. arXiv:2009.10620. doi:10.1093/mnras/staa2976. ISSN 0035-8711.
  26. ^ Jackman, James A. G.; Wheatley, Peter J.; Bayliss, Dan; Gill, Samuel; Hodgkin, Simon T.; Burleigh, Matthew R.; Braker, Ian P.; Günther, Maximilian N.; Louden, Tom; Turner, Oliver; Anderson, David R. (2019-11-11). "NGTS-7Ab: An ultra-short period brown dwarf transiting a tidally-locked and active M dwarf". Monthly Notices of the Royal Astronomical Society. 489 (4): 5146–5164. arXiv:1906.08219. doi:10.1093/mnras/stz2496. ISSN 0035-8711.
  27. ^ McCormac, James; Gillen, Edward; Jackman, James A. G.; Brown, David J. A.; Bayliss, Daniel; Wheatley, Peter J.; West, Richard G.; Anderson, David R.; Armstrong, David J.; Bouchy, Francois; Briegal, Joshua T. (2020-03-21). "NGTS-10b: The shortest period hot Jupiter yet discovered". Monthly Notices of the Royal Astronomical Society. 493 (1): 126–140. arXiv:1909.12424. doi:10.1093/mnras/staa115. ISSN 0035-8711.
  28. ^ "Discovery of a Sub-Saturn Exoplanet around a Sun-like star - ISRO". www.isro.gov.in. Retrieved 2019-11-25.
  29. ^ "Discovery". www.isro.gov.in.
  30. ^ Khandelwal, Akanksha; Sharma, Rishikesh; Chakraborty, Abhijit; Chaturvedi, Priyanka; Ulmer-Moll, Solène; Ciardi, David R.; Boyle, Andrew W.; Baliwal, Sanjay; Bieryla, Allyson; Latham, David W.; Prasad, Neelam J. S. S. V.; Nayak, Ashirbad; Lendl, Monika; Mordasini, Christoph (April 1, 2023). "Discovery of a massive giant planet with extreme density around the sub-giant star TOI-4603". Astronomy & Astrophysics. 672: L7. arXiv:2303.11841. Bibcode:2023A&A...672L...7K. doi:10.1051/0004-6361/202245608. S2CID 257637141 – via www.aanda.org.
  31. ^ "Home - (QES)". qatarexoplanet.org. Retrieved 2019-05-04.
  32. ^ "SOPHIE |". exoplanets.ch. Retrieved 2016-07-08.
  33. ^ "ESO's SPHERE Unveils its First Exoplanet". eso.org. 2017-07-06.
  34. ^ Delrez, Laetitia; et al. (2018). "SPECULOOS: A network of robotic telescopes to hunt for terrestrial planets around the nearest ultracool dwarfs". In Spyromilio, Jason; Marshall, Heather K; Gilmozzi, Roberto (eds.). Ground-based and Airborne Telescopes VII. Vol. 10700. pp. 107001I. arXiv:1806.11205. Bibcode:2018SPIE10700E..1ID. doi:10.1117/12.2312475. ISBN 9781510619531. S2CID 119012966.
  35. ^ Thalmann, Christian; Carson, Joseph; Janson, Markus; Goto, Miwa; McElwain, Michael; Egner, Sebastian; Feldt, Markus; Hashimoto, Jun; Hayano, Yutaka (2009-12-20). "Discovery of the Coldest Imaged Companion of a Sun-Like Star". The Astrophysical Journal. 707 (2): L123–L127. arXiv:0911.1127. Bibcode:2009ApJ...707L.123T. doi:10.1088/0004-637X/707/2/L123. ISSN 0004-637X. S2CID 116823073.
  36. ^ "WASP Planets". WASP Planets. 5 December 2013. Retrieved 2020-05-23.
  37. ^ "WASP Planets". WASP Planets. Retrieved 2018-07-19.
  38. ^ Scott, Phillip; et al. (2020-07-14). "GJ 3470 c: A Saturn-like Exoplanet Candidate in the Habitable Zone of GJ 3470". arXiv:2007.07373 [astro-ph.EP].
  39. ^ "The Extrasolar Planet Encyclopaedia — GJ 3470 c". Extrasolar Planets Encyclopaedia. 1995. Retrieved 2020-07-16.
  40. ^ Schmid, H. M.; et al. (2005-12-01). "ZIMPOL/CHEOPS: a Polarimetric Imager for the Direct Detection of Extra-solar Planets". Astronomical Polarimetry: Current Status and Future Directions. 343: 89. Bibcode:2005ASPC..343...89S.
  41. ^ Zhang, Zhoujian; Liu, Michael C.; Hermes, J. J.; Magnier, Eugene A.; Marley, Mark S.; Tremblay, Pier-Emmanuel; Tucker, Michael A.; Do, Aaron; Payne, Anna V.; Shappee, Benjamin J. (2020-03-17). "COol Companions ON Ultrawide orbiTS (COCONUTS). I. A High-Gravity T4 Benchmark around an Old White Dwarf and A Re-Examination of the Surface-Gravity Dependence of the L/T Transition". The Astrophysical Journal. 891 (2): 171. arXiv:2002.05723. Bibcode:2020ApJ...891..171Z. doi:10.3847/1538-4357/ab765c. ISSN 1538-4357. S2CID 211126544.
  42. ^ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2022-07-11.
  43. ^ Zhang, Zhoujian; Liu, Michael C.; Morley, Caroline V.; Magnier, Eugene A.; Tucker, Michael A.; Vanderbosch, Zachary P.; Do, Aaron; Shappee, Benjamin J. (2022-07-06). "COol Companions ON Ultrawide orbiTS (COCONUTS). III. A Very Red L6 Benchmark Brown Dwarf around a Young M5 Dwarf". The Astrophysical Journal. 935 (1): 15. arXiv:2207.02865. Bibcode:2022ApJ...935...15Z. doi:10.3847/1538-4357/ac7ce9. S2CID 250334494.
  44. ^ Siegel, Ethan. "Astronomers Go Nuts For Closest Exoplanet Directly Imaged Ever: COCONUTS-2b". Forbes. Retrieved 2022-04-02.
  45. ^ "ESA Science & Technology - CHEOPS exoplanet mission meets key milestones en route to 2017 launch". sci.esa.int.
  46. ^ "Objectives". sci.esa.int. Retrieved 2016-06-12.
  47. ^ "Exoplanet Archive Planet Counts". exoplanetarchive.ipac.caltech.edu. Retrieved 2019-04-14.