Welcome to ExoFOP

The Exoplanet Follow-up Observing Program (ExoFOP) website is designed to optimize resources and facilitate collaboration in follow-up studies of exoplanet candidates. ExoFOP serves as a repository for community-gathered follow-up data by allowing upload and display of data and derived astrophysical parameters.

Please include the following standard acknowledgment in any published material that makes use of ExoFOP: "This research has made use of the Exoplanet Follow-up Observation Program website, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program."


8,214 stars
2,321 confirmed planets


287,309 targets
157 confirmed planets

K2 Campaign 9

Microlensing survey
627 events


10,798,947 targets
(Candidate Target List)

Questions? Contact us at exofop-support@ipac.caltech.edu.