List of exoplanet search projects

The following is a list of exoplanet search projects.

Ground-based search projects

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 60+ 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

Past and current

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 4,711 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 (+ 3 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

Planned

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

Proposed

Canceled

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