HEC: Exoplanet Statistics

Last Update: November 15, 2017
Currently Known Exoplanets
Here is a list of the number of confirmed and unconfirmed exoplanets according to the main exoplanet databases. Not all of them list the same number of objects or data depending on their criteria and scope. The PHL' Exoplanets Catalog uses the Extrasolar Planet Encyclopedia with many corrections and additions from other sources.

Exoplanet DatabaseAll PlanetsNASA Kepler Planets
PHL Exoplanets Catalog3782*4302
Extrasolar Planet Encyclopaedia3704—
NASA Exoplanet Archive35504496
Exoplanet Orbit Database29504728
Open Exoplanet Catalogue3497—
* number includes some still unconfirmed planets

Summary Statistics

This page has statistics for all known exoplanets from the PHL's Exoplanet Database, which includes both confirmed exoplanets and NASA Kepler candidates. The current number of potentially habitable exoplanets and predicted exomoons are shown in red. Some of these numbers are also represented in the Periodic Table of Exoplanets.

 Total
Exoplanets		Stellar
Systems		Hot ExoplanetsWarm ExoplanetsCold
Exoplanets		Unclassified
Habitable
Exoplanets3		Habitable
Exomoons4
 Confirmed1378228363181230327445340
Kepler Candidates24302335741191438326324
(1) Confirmed exoplanets are those listed by the Extrasolar Planets Encyclopedia plus any corrections and updates.
(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) Objects of interest for habitable exomoons are predicted from planetary dynamics, but none observed yet.

Miniterrans
Subterrans
Terrans
Superterrans
Neptunians
Jovians
5727019827991217
0.1 %1.9 %18.5 %26.0 %21.1 %32.2 %
Hot Miniterrans
Hot Subterrans
Hot Terrans
Hot Superterrans
Hot Neptunians
Hot Jovians
554599965768788
 Warm Miniterrans Warm Subterrans
Warm Terrans
Warm Superterrans
Warm Neptunians
Warm Jovians
01213138139
Cold MiniterransCold SubterransCold TerransCold SuperterransCold NeptuniansCold Jovians
018924285
1-Planet
Systems
2-Planet
Systems
3-Planet
Systems
4-Planet
Systems
5-Planet
Systems		6-Planet
Systems
7-Planet
Systems
2209419136461673
77.9 %14.8 %4.8 %1.6 %0.6 %0.2 %
0.1 %

Details of NASA Kepler Candidates†
Miniterrans
Subterrans
Terrans
Superterrans
Neptunians
Jovians
926311671289848587
0.2 %6.1 %27.1 %30.0 %19.7 %13.6 %
Hot MiniterransHot Subterrans
Hot Terrans
Hot Superterrans
Hot Neptunians
Hot Jovians
720611411268840555
 Warm Miniterrans Warm Subterrans
Warm Terrans
Warm Superterrans
Warm Neptunians
Warm Jovians
0112514233
Cold MiniterransCold SubterransCold TerransCold SuperterransCold NeptuniansCold Jovians
002222
1-Planet
Systems
2-Planet
Systems
3-Planet
Systems
4-Planet
Systems
5-Planet
Systems		6-Planet
Systems
7-Planet
Systems
2716432135541910
80.9 %12.9 %4.0 %1.6 %0.6 %<0.1 %
0.0 %

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