Kepler-18

thumb | right | Comparative sizes of Earth, Kepler-18 b and [[Jupiter]] Kepler-18 is a star with almost the same mass as the Sun in the Cygnus constellation.

Astronomical data · SIMBAD

Object type: Er*
Distance: 1,423 light-years
Redshift: z = -0.00006137624494328975
Coordinates: RA 298.0795° · Dec 44.7463°

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Wikidata facts

Distance from Earth: 438.51
Radius: 1.11
Mass: 0.97
Image: Kepler-18 b comparative.jpg

Show 16 more facts

catalog code: TIC 273690178
Commons category: Kepler-18
effective temperature: 5345
parallax: 2.2916
apparent magnitude: 14.75
stellar rotational velocity: 2.164
absolute magnitude: 4.89
metallicity: 0.29
surface gravity: 30000
luminosity: 0.60291755
right ascension component of proper motion: -1.436
declination component of proper motion: -20.341
right ascension: 298.07945346355
declination: 44.74633553581
radial velocity: -21.8
age estimated by a dating method: 10

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Article

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Contents

Planetary system
References
External links

thumb | right | Comparative sizes of Earth, Kepler-18 b and [[Jupiter]] Kepler-18 is a star with almost the same mass as the Sun in the Cygnus constellation.

==Planetary system== The star is orbited by 3 confirmed planets, announced in 2011. In 2021, it was found the orbital plane of Kepler-18d is slowly changing, likely under the gravitational influence of the additional giant planet.