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Kepler-451b, also known as 2MASS J19383260+4603591 b, is a circumbinary exoplanet orbiting the star 2MASS J19383260+4603591. It has a mass of 604±32 Earth Masses or 1.9±0.1 Jupiter Masses. It was discovered using Eclipse Timing Variations by the Kepler space telescope in 2015.[2]

Kepler-451b
Discovery
Discovery siteKepler Space Observatory
Discovery date2015
Detection method
Eclipse Timing Variations
Orbital characteristics
Semi-major axis
0.92 ± 0.02 AU (137,600,000 ± 3,000,000 km)[1]
Eccentricitynull
Orbital period (sidereal)
416±2 d[1]
Star2MASS J19383260+4603591 A/B
Physical characteristics
Mass604±32[1] MEarth

    The existence of the planet was disputed in 2020 though,[3] but in 2022 a confirmation was announced.[4]


    References


    1. "2MASS J19383260+4603591 b/Kepler-451 b CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2015-10-08.
    2. Detection of a planet in the sdB + M dwarf binary system 2M 1938+4603
    3. The quest for planets around subdwarfs and white dwarfs from Kepler space telescope fields. I. Techniques and tests of the methods, 2020, arXiv:2009.02749
    4. Detection of two additional circumbinary planets around Kepler-451, 2022, arXiv:2202.02118


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