Lists of exoplanets

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Artist's concept of the potentially habitable exoplanet, Kepler-186f.

This is a list of exoplanets. As of 10 October 2019, there are 4,073 confirmed exoplanets.[1] The majority of these planets were discovered by the Kepler space telescope. In addition to the confirmed exoplanets, there are 2,420 potential exoplanets from its first mission that are yet to be confirmed, and 877 from its "Second Light" mission. Additionally, a growing number of planets are being discovered by the Transiting Exoplanet Survey Satellite (TESS).[2]

For yearly lists on physical, orbital and other properties, as well as on discovery circumstances and other aspects, see § Specific exoplanet lists


The convention for designating exoplanets is an extension of the system used for designating multiple-star systems as adopted by the International Astronomical Union (IAU). For exoplanets orbiting a single star, the designation is normally formed by taking the name or, more commonly, designation of its parent star and adding a lower case letter.[3] The first planet discovered in a system is given the designation "b" (the parent star is considered to be "a") and later planets are given subsequent letters. If several planets in the same system are discovered at the same time, the closest one to the star gets the next letter, followed by the other planets in order of orbital size. A provisional IAU-sanctioned standard exists to accommodate the designation of circumbinary planets. A limited number of exoplanets have IAU-sanctioned proper names. Other naming systems exist.

Methods of detection[edit]

Astrometry: 1 (0.0%)Direct imaging: 47 (1.2%)Radial velocity: 762 (18.8%)Transit: 3,112 (77.0%)Transit-timing variation: 18 (0.4%)Eclipse timing variation: 11 (0.3%)Microlensing: 78 (1.9%)Pulsar timing variation: 6 (0.1%)Pulsation timing variation: 2 (0.0%)Orbital brightness modulation: 6 (0.1%)Circle frame.svg
  •   Astrometry: 1 (0.0%)
  •   Direct imaging: 47 (1.2%)
  •   Radial velocity: 762 (18.8%)
  •   Transit: 3,112 (77.0%)
  •   Transit-timing variation: 18 (0.4%)
  •   Eclipse timing variation: 11 (0.3%)
  •   Microlensing: 78 (1.9%)
  •   Pulsar timing variation: 6 (0.1%)
  •   Pulsation timing variation: 2 (0.0%)
  •   Orbital brightness modulation: 6 (0.1%)

About 97% of all the confirmed exoplanets have been discovered by indirect techniques of detection, mainly by radial velocity measurements and transit monitoring techniques.[4]

Specific exoplanet lists[edit]

Distribution of confirmed exoplanets vs. distance from Solar System

See also[edit]


  1. ^ "NASA Exoplanet Archive". Retrieved 13 September 2019.
  2. ^ a b "Exoplanet and Candidate Statistics". NASA Exoplanet Archive. NASA Exoplanet Science Institute. Retrieved 13 September 2019.
  3. ^ "International Astronomical Union | IAU". Retrieved 29 January 2017.
  4. ^ Ollivier, Marc; Maurel, Marie-Christine (2014). "Planetary Environments and Origins of Life: How to reinvent the study of Origins of Life on the Earth and Life in the". BIO Web of Conferences 2. 2: 00001. doi:10.1051/bioconf/20140200001. Retrieved 11 September 2015.

External links[edit]