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HEC: Exoplanet Statistics

Last Update: March 4, 2014
This page has statistics for all known confirmed exoplanets and NASA Kepler candidates. The current number of potential habitable exoplanets and predicted exomoons are shown in red. More details of these objects are available in the main page of the Habitable Exoplanet Catalog (HEC) or the PHL's Exoplanet Database.

Currently Known Exoplanets
Here is a list on the number of confirmed and unconfirmed exoplanets according to the main exoplanet databases in the world. Not all of them list the same number of objects or data depending on their criteria and scope. The PHL' Exoplanets Catalog mirrors the Extrasolar Planet Encyclopedia with many correction and additions from other databases.

Exoplanet DatabaseConfirmedNASA Kepler Candidates*
PHL Exoplanets Catalog1,7933,841
Extrasolar Planet Encyclopaedia1,081—
NASA Exoplanet Archive1,6903,845
Exoplanet Orbit Database7753,617
Open Exoplanet Catalogue1,766—
* Most Kepler candidates are unconfirmed

Summary Statistics

 Total
Exoplanets		Stellar
Systems		Hot ExoplanetsWarm ExoplanetsCold
Exoplanets		Unclassified
Habitable
Exoplanets		Habitable
Exomoons3
 Confirmed11,7931,1021,445133203121428
Kepler Candidates23,8412,9553,680153806917
(1) Confirmed exoplanets are those as listed by the Extrasolar Planets Encyclopedia.
(2) NASA Kepler Mission exoplanet candidates are those as listed by the NASA Exoplanet Archive.
(3) Exomoons are predicted from planetary dynamics, but none observed yet.

Mercurians
Subterrans
Terrans
Superterrans
Neptunians
Jovians
316109532366767
0.2 %0.9 %6.1 %29.7 %20.4 %42.8 %
Hot Mercurians
Hot Subterrans
Hot Terrans
Hot Superterrans
Hot Neptunians
Hot Jovians
316109508339470
 Warm Mercurians
 Warm Subterrans
Warm Terrans
Warm Superterrans
Warm Neptunians
Warm Jovians
0001412103
Cold MercuriansCold SubterransCold TerransCold SuperterransCold NeptuniansCold Jovians
000615182
1-Planet
Systems
2-Planet
Systems
3-Planet
Systems
4-Planet
Systems
5-Planet
Systems		6-Planet
Systems
7-Planet
Systems
639310100371141
58.0 %28.1 %9.1 %3.4 %1.0 %0.4 %
0.1 %

Details of NASA Kepler Candidates†
Mercurians
Subterrans
Terrans
Superterrans
Neptunians
Jovians
41345441,808945404
0.1 %3.5 %14.2 %47.1 %24.6 %10.5 %
Hot Mercurians
Hot Subterrans
Hot Terrans
Hot Superterrans
Hot Neptunians
Hot Jovians
41335341,744896367
 Warm Mercurians
 Warm Subterrans
Warm Terrans
Warm Superterrans
Warm Neptunians
Warm Jovians
017614836
Cold MercuriansCold SubterransCold TerransCold SuperterransCold NeptuniansCold Jovians
003311
1-Planet Systems
2-Planet Systems
3-Planet Systems
4-Planet Systems
5-Planet Systems6-Planet Systems
2,36638613349183
80.1 %13.1 %4.5 %1.7 %0.6 %0.1 %

† Not all exoplanets listed in the summary can be assigned to a category due to missing stellar or planetary data.