From Wikipedia, the free encyclopedia
Kepler-1704b
Discovery
Discovered byPaul A. Dalba et al. [1]
Discovery date2021
Designations
KOI-375.01
Orbital characteristics
Periastron0.16
Apoastron3.9
2.026+0.024
−0.031
AU
Eccentricity0.921+0.010
−0.015
988.8811177±0.0009114 [2]
Inclination89.01+0.59
−0.27
°
Physical characteristics
Mean radius
10.81 R🜨 [2]
Mass4.15 ± 0.29 MJ
Temperature253.8+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, been scattered from its birth orbit to orbit with periastron just above tidal circularization distance. [1]

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. ^ a b c d e f 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. ^ a b "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.