Kepler-1704b

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Kepler-1704b
Discovery
Discovered by Paul A. Dalba et al. [1]
Discovery date2021
Designations
KOI-375.01
Orbital characteristics
Periastron 0.16
Apoastron 3.9
2.026+0.024
−0.031 AU
Eccentricity 0.921+0.010
−0.015
988.8811177±0.0009114 [2]
Inclination 89.01+0.59
−0.27°
Physical characteristics
10.81 R🜨 [2]
Mass 4.15 ± 0.29 MJ
Temperature 253.8+3.7
−4.1 K [1]

    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, having been scattered from its birth orbit to orbit with a periastron just above the tidal circularization distance. [1]

    Contents

    Characteristics

    Kepler-1704b is much more massive than Jupiter, at 4.51 MJ. [1] 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. [1] The extreme eccentricity yields a temperature difference of up to 700 K. [1]

    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. 1 2 3 4 5 6 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.
    2. 1 2 "Kepler Objects of Interest". exoplanetarchive.ipac.caltech.edu. Retrieved 2021-07-25.
    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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