WASP-47d and WASP-47e

Date of the discovery: 12 October 2015

Short Description: WASP-47b is a hot Jupiter close to the host star and WASP-47c is another Jupiter sized planet in this system further out discovered by professional astronomers. Two smaller planets in the system that orbit the star very closely WASP-47d and WASP-47e were found by a volunteer of the Planet Hunters project in K2 data.

Volunteer(s): Hans Martin Schwengeler

Researchers in the discovery paper: Juliette C. Becker, Andrew Vanderburg, Fred C. Adams, Saul A. Rappaport

Link to paper in ADS: https://ui.adsabs.harvard.edu/abs/2015ApJ…812L..18B/abstract

Exoplanet archive: https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=WASP-47&type=PLANET_HOST

Telescopes involved: Kepler Space Telescope

Figrue 1 of the paper, showing the transits of planet b, d and e. Planet c is not transiting
Other pages:

WASP-47e in the exoplanet catalog: https://exoplanets.nasa.gov/exoplanet-catalog/6019/wasp-47-e/

Planet Hunters blog: https://blog.planethunters.org/2015/11/04/hot-friends-of-hot-jupiters-the-wasp-47-system/

Credit for the header image: Screenshot from Eyes on Exoplanets, which is managed by the Exoplanet Exploration Program and the Jet Propulsion Laboratory for NASA’s Astrophysics Division

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