The Search for Extra-Solar Planets

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 Confirmed Exoplanet Statistics

                   11/02/2017

 

Discovery Method                         Planets

Astrometry                                           1

Imaging                                               44

Radial Velocity                                 646

Transit                                             2763

Transit timing variations                  15

Eclipse timing variations                   9

Microlensing                                      51

Pulsar timing variations                     5

Pulsation timing variations               2

Orbital brightness modulations       6   

 

Transiting Exoplanets                2788

All Exoplanets                               3550

                     Counts by Radius

Less than 1.25 Earth radius                            372

Greater than 1.25 less than 2 Earth radii    760

Greater than 2 less than 6 Earth radii        1187

Greater than 6 less than 15 Earth radii        359

Greater than 15 Earth radii                            121


       Kepler 1 Mission Counts (08/31/2017)

Confirmed Planets (mission and community)             2337

Habitable Zone Confirmed and Candidates*                290

Kepler Project Candidates                                               4496

Kepler Project Unconfirmed Candidates                      2248

Total Candidates and Confirmed Planets                    4585

*180 K < Equilibrium (T) < 310 K or 0.25 < Earth Insolation < 2.2

      Kepler 2 Mission Counts (08/31/2017)

Confirmed Planets                                                             183

K2 Candidates*                                                                   515

K2 Campaign 9 Microslensing Events                             627

 


Source: NASA Exoplanet Archive, operated by California Institute of Technology for the NASA AExoplanet Exploration Program.