Kepler-68

Kepler-68 is a Sun-like main sequence star located away in the constellation Cygnus. It is known to have at least four planets orbiting around it. The third planet has a mass similar to Jupiter but orbits within the habitable zone.

Astronomical data · SIMBAD

Object type: Er*
Spectral type: G1V
Distance: 471 light-years
Redshift: z = -0.0000677946076301783
Coordinates: RA 291.0324° · Dec 49.0403°

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Wikidata facts

Instance of: eruptive variable star
Constellation: Cygnus
Distance from Earth: 144.166
Diameter: 1710000
Radius: 1.259
Mass: 1.064
Variable-star type: rotating variable star

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catalog code: SPOCS 4202
parallax: 6.9298
effective temperature: 5793
apparent magnitude: 9.914
radial velocity: -21.2
epoch: J2000.0
metallicity: 0.126
stellar rotational velocity: 1.6
surface gravity: 17400
luminosity: 1.6527754
right ascension component of proper motion: -7.305
declination component of proper motion: -10.454
right ascension: 291.03235821112
declination: 49.04025787452
spectral class: G2IV-V
age estimated by a dating method: 6.84

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Encyclopedic overview

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Contents

Planetary system
References

High resolution imaging observations of Kepler-68 carried out with the lucky imaging instrument AstraLux on the 2.2m telescope at Calar Alto Observatory detected a wide companion candidate approximately 11 arcseconds away. Comparing these observations to the 2MASS positions showed that the companion's proper motion appeared consistent with it being bound to the Kepler-68 system, but further observations were needed to confirm this conclusion. In 2019 this was found to be an unrelated background star using Gaia DR2 astrometry.

Excerpted from Wikipedia’s “Kepler-68” article, available under the CC BY-SA 4.0 licence.

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