About the Exoplanet Archive

The NASA Exoplanet Archive is an online astronomical exoplanet and stellar catalog and data service that collates and cross-correlates astronomical data and information on exoplanets and their host stars and provides tools to work with these data. The Exoplanet Archive is dedicated to collecting and serving important public data sets involved in the search for and characterization of extrasolar planets and their host stars. The data include stellar parameters (such as positions, magnitudes, and temperatures), exoplanet parameters (such as masses and orbital parameters) and discovery/characterization data (such as published radial velocity curves, photometric light curves, images, and spectra).

All data in the Exoplanet Archive are vetted by a team of astronomers and are linked back to the original literature reference. Data are searchable either for an individual star or by stellar and planetary properties. The Exoplanet Archive offers direct access to frequently accessed data sets via an interactive table which allows sorting and filtering of the data. These data sets include:

• List of all known planets and hosts
• List of all Kepler Objects of Interest
• List of all Kepler Threshold Crossing Events (TCEs)

Additionally, a breakdown of the exoplanet counts by discovery method is available on the Planet Counts page.

Tools for Working With Exoplanet Data

The NASA Exoplanet Archive includes several tools for working with exoplanet and stellar host data.

• Kepler Light Curve Viewer: Interactive display of user-selected quarters for a single Kepler target. Any column from the light curve file can be plotted with or without normalization and sent to the periodogram or phase tool.
• Periodogram Service: This tool calculates the periodogram of time series data from the archive or a file uploaded by the user. The service supports three algorithms: Lomb-Scargle, Box-fitting Least Squares (BLS) and Plavchan. Phased light curves for the most significant periods are also available.
• Transit and Ephemeris Calculations for Kepler Objects of Interest and Confirmed Planets: This service returns an ephemeris of the times of transit of the exoplanet across its host star. Optionally, for a given longitude and latitude or observatory, the service tabulates times of transit at that location and can calculate the time for secondary transits or other phase points in the orbit.
• Application Program Interface (API): This service allows a user access to the contents of the exoplanet and host star table and the Kepler candidate table via a URL or command-line-based query.

Transit Survey Data in the Exoplanet Archive

The Exoplanet Archive serves photometric time-series data from surveys that aim to discover transiting exoplanets, such as the Kepler Mission and CoRoT. The database provides access to over 700,000 light curves from space and ground-based exoplanet transit survey programs, including:

• Kepler Public Survey Data
• CoRoT Exoplanet Survey data
• CoRoT Asteroseismology data
• HATNet Survey data
• XO Survey data
• TrES Survey data
• KELT Survey data

Acknowledging the NASA Exoplanet Archive in Publications

Please include the following standard acknowledgment in any published material that makes use of the NASA Exoplanet Archive's Services.

""This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program."

Holdings

The Exoplanet Archive offers search and filtering capabilities for exoplanets, Kepler candidates and time series data sets. A complete listing of the data in the Exoplanet Archive can be found here.

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