TOI 1338


TOI 1338 is a binary star system located in the constellation Pictor, about 1,300 light-years from Earth. It was discovered by TESS and is orbited by a circumbinary planet known as TOI 1338 b. The two stars with masses of about 1.2 and 0.325 revolve around each other every 14.6 days.

Nomenclature and history

The acronym "TOI" refers to stars and exoplanets studied by TESS, and is short for: "Transiting Exoplanet Survey Satellite Object of Interest". The planet was found by a high school student, who joined the Goddard Space Flight Center as a summer intern. He looked through light curves that were flagged as eclipsing binaries by volunteers of the Planet Hunters citizen science project.

Planetary system