The Search for Extra-Solar Planets

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 Confirmed Exoplanet Statistics

                   03/16/2017

 

Discovery Method                         Planets

Astrometry                                           1

Imaging                                               44

Radial Velocity                                 619

Transit                                             2717

Transit timing variations                  15

Eclipse timing variations                    8

Microlensing                                      44

Pulsar timing variations                     5

Pulsation timing variations               2

Orbital brightness modulations      6   

 

Transiting Exoplanets                2742

All Exoplanets                               3461

                     Counts by Radius

Less than 1.25 Earth radius                            368

Greater than 1.25 less than 2 Earth radii    748

Greater than 2 less than 6 Earth radii        1178

Greater than 6 less than 15 Earth radii        347

Greater than 15 Earth radii                            112


       Kepler Mission Counts (03/23/2016)

Confirmed Planets (mission and community)             2331

Habitable Zone Confirmed and Candidates*                292 

Kepler Project Candidates                                               4496

Kepler Project Unconfirmed Candidates                      2251

Total Candidates and Confirmed Planets                    4582

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

      Kepler 2 Mission Counts (03/23/2017)

Confirmed Planets                                                              147

K2 Candidates*                                                                   520 

K2 Campaign 9 Microslensing Events                             627

 


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