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Kepler-453b is a transiting circumbinary exoplanet in the binary-star system Kepler-453. It orbits the binary system in the habitable zone every 240.5 days. It also may have a relatively low density. This is due to its mass likely being less than 32 Earth masses.[1][2] The orbit of the planet is inclined relative to the binary orbit therefore precession of the orbit leads to it spending most of its time in a non-transiting configuration. By the time the TESS and PLATO spacecraft are available for follow up observations it will no longer be transiting.[3]

Kepler-453b
Discovery
Discovery siteKepler Space Observatory
Discovery date2015
Transit
Orbital characteristics
0.7903 ± 0.0028 AU (118,230,000 ± 420,000 km)[1]
Eccentricity0.0359±0.0088[1]
240.503±0.053[1] d
Inclination89.4429±0.0091 [1]
StarKepler-453
Physical characteristics
Mean radius
6.204±0.039[1] R
Mass0.1±16[1] M

ReferencesEdit

  1. ^ a b c d e f g "Kepler-453 b Confirmed Planet Overview Page". NASA Exoplanet Archive. Retrieved 2015-10-08.
  2. ^ Welsh, William F.; et al. (2015). "Kepler 453 b - The 10th Kepler Transiting Circumbinary Planet". The Astrophysical Journal. 809 (1). 26. arXiv:1409.1605. Bibcode:2015ApJ...809...26W. doi:10.1088/0004-637X/809/1/26.
  3. ^ Martin, David V. (2017). "Circumbinary planets - II. When transits come and go". Monthly Notices of the Royal Astronomical Society. 465 (3): 3235–3253. arXiv:1611.00526. Bibcode:2017MNRAS.465.3235M. doi:10.1093/mnras/stw2851.