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HEC: Exoplanet Statistics

Last Update: April 17, 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 Catalog1,7813,845
Extrasolar Planet Encyclopaedia1,781—
NASA Exoplanet Archive1,6963,845
Exoplanet Orbit Database1,4903,705
Open Exoplanet Catalogue1,773—
* Most Kepler candidates are unconfirmed

Summary Statistics

 Total
Exoplanets		Stellar
Systems		Hot ExoplanetsWarm ExoplanetsCold
Exoplanets		Unclassified
Habitable
Exoplanets3		Habitable
Exomoons4
 Confirmed11,7811,1101,432134203122128
Kepler Candidates23,8452,9553,684153806917
(1) Confirmed exoplanets are those as listed by the Extrasolar Planets Encyclopedia plus any recent change.
(2) NASA Kepler Mission exoplanet candidates are those as listed by the NASA Exoplanet Archive.
(3) Number of potentially habitable exoplanets includes some still unconfirmed.
(4) Candidate for habitable exomoons are predicted from planetary dynamics, but none observed yet.

Mercurians
Subterrans
Terrans
Superterrans
Neptunians
Jovians
415110524361767
0.2 %0.8 %6.2 %29.4 %20.3 %43.1 %
Hot Mercurians
Hot Subterrans
Hot Terrans
Hot Superterrans
Hot Neptunians
Hot Jovians
415109501334469
 Warm Mercurians
 Warm Subterrans
Warm Terrans
Warm Superterrans
Warm Neptunians
Warm Jovians
0012012103
Cold MercuriansCold SubterransCold TerransCold SuperterransCold NeptuniansCold Jovians
000515183
1-Planet
Systems
2-Planet
Systems
3-Planet
Systems
4-Planet
Systems
5-Planet
Systems		6-Planet
Systems
7-Planet
Systems
64131099331241
58.3 %28.2 %9.0 %3.0 %1.1 %0.4 %
0.1 %

Details of NASA Kepler Candidates†
Mercurians
Subterrans
Terrans
Superterrans
Neptunians
Jovians
41365671,794941401
0.1 %3.5 %14.7 %46.7 %24.5 %10.4 %
Hot Mercurians
Hot Subterrans
Hot Terrans
Hot Superterrans
Hot Neptunians
Hot Jovians
41355571,730892364
 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
2,36338813449183
80.0 %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.