Kepler Mission Information

Kepler Mission

The Kepler Mission, a NASA Discovery mission launched on March 6, 2009, is the first space mission to search for Earth-size and smaller planets in the habitable zone of other stars in our neighborhood of the galaxy. Kepler is a special-purpose spacecraft that precisely measures the light variations from thousands of distant stars, looking for planetary transits. When a planet passes in front of its parent star, as seen from our solar system, it blocks a small fraction of the light from that star; this is known as a transit. Searching for transits of distant Earths is like looking for the drop in brightness when a moth flies across a searchlight. Measuring repeated transits, all with a regular period, duration and change in brightness, provides a method for discovering and confirming planets and their orbits—planets the size of Earth and smaller in the habitable zone around other stars similar to our Sun. Kepler continuously monitors over 100,000 stars similar to our Sun for brightness ch anges produced by planetary transits.

See the Kepler data release schedule.

Exoplanet Archive Kepler Resources

General Documentation

  Interactive Tables (Also see: How to use interactive tables) Documentation and Other Information
Kepler Object of Interest (KOI) Activity Tables

(Cumulative table only)¹

(Cumulative and Quarterly tables)²

Q1-17 DR 24





General Documentation

Purpose of KOI Tables

MCMC Posterior Chains

Threshold-Crossing Events and Data Validation

Q1-17 DR 25

Q1-17 DR 24



Stellar Information for Observed Kepler Targets Search interface to interactive table:
Q1-12, Q1-16, Q1-17 DR 24, and Q1-17 DR 25
Kepler, KOI Numbers and KIC Identifiers Kepler Names
Completeness and Reliability Products

Kepler Certified False Positive Table

Kepler Astrophysical False Positive Probabilites Table

Kepler Astrophysical Positional Probabilities Table

Completeness and Reliability home

¹ The Cumulative table is a single tab containing a superset of KOIs from all available quarters. Use this link for faster performance when working with only the most current results.

² The combined Cumulative and Quarterly table contains KOI data for different quarters on separate tabs, as well as a superset of the data on a single tab. Use this link to access any of the quarterly activity tables (Q1-6, 1-8, 1-12 or 1-16) or to compare objects across tables.

Additional Mission Resources

Last updated: 2 June 2016