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Kepler-1704b is a super-Jupiter on a highly eccentric orbit around the star Kepler-1704. It has a mass of 4.51 MJ. The planet's distance from its star varies from 0.16 to 3.9 AU. It is a failed hot Jupiter, been scattered from its birth orbit to orbit with periastron just above tidal circularization distance.[2]

Kepler-1704b
Discovery
Discovered byPaul A. Dalba, Stephen R. Kane, Zhexing Li, Mason G. Macdougall, Lee J. Rosenthal, Collin Cherubim, Howard Isaacson, Daniel P. Thorngren, Benjamin Fulton, Andrew W. Howard, Erik A. Petigura, Edward W. Schwieterman, Dan O. Peluso, Thomas M. Esposito, Franck Marchis, Matthew J. Payne
Discovery date2021
Designations
Alternative names
KOI-375.01
Orbital characteristics
Periastron0.16
Apoastron3.9
Semi-major axis
2.026+0.024
−0.031 AU
Eccentricity0.921+0.010
−0.015
Orbital period (sidereal)
988.8811177±0.0009114[1]
Inclination89.01+0.59
−0.27°
Physical characteristics
Mean radius
10.81 REarth[1]
Mass4.15 ± 0.29 MJ
Temperature253.8+3.7
−4.1 K[2]

    Characteristics


    Kepler-1704b is much more massive than Jupiter, at 4.51 MJ.[2] The high planetary mass makes Kepler-1704b a super-Jupiter. Kepler-1704b goes on a highly eccentric 2.7 year-long (988.88 days) orbit around its star as well as transiting.[2] The extreme eccentricity yields a temperature difference of up to 700 K.[2]


    Star


    The star, Kepler-1704, is a G2, 5745-kelvin star 825 parsecs (2,690 ly) from Earth and the sun. It has a mass of 1.131 M☉, a radius of 1.697 R☉, and a luminosity of 2.83 L☉. The high radius for the star's mass hints that Kepler-1704 is not a main-sequence star.[3]


    See also



    References


    1. "Kepler Objects of Interest". exoplanetarchive.ipac.caltech.edu. Retrieved 2021-07-25.
    2. Dalba, Paul A.; Kane, Stephen R.; Li, Zhexing; Macdougall, Mason G.; Rosenthal, Lee J.; Cherubim, Collin; Isaacson, Howard; Thorngren, Daniel P.; Fulton, Benjamin; Howard, Andrew W.; Petigura, Erik A. (2021-07-14). "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 Yr, Highly Eccentric Orbit". The Astronomical Journal. 162 (4): 154. arXiv:2107.06901. Bibcode:2021AJ....162..154D. doi:10.3847/1538-3881/ac134b. S2CID 235898945.
    3. Dalba, Paul A.; Kane, Stephen R.; Li, Zhexing; Macdougall, Mason G.; Rosenthal, Lee J.; Cherubim, Collin; Isaacson, Howard; Thorngren, Daniel P.; Fulton, Benjamin; Howard, Andrew W.; Petigura, Erik A.; Schwieterman, Edward W.; Peluso, Dan O.; Esposito, Thomas M.; Marchis, Franck; Payne, Matthew J. (2021). "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 Yr, Highly Eccentric Orbit". The Astronomical Journal. 162 (4): 154. arXiv:2107.06901. Bibcode:2021AJ....162..154D. doi:10.3847/1538-3881/ac134b. S2CID 235898945.


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