Kepler-51
Sign in to saveKepler-51 is a Sun-like star that is about 500 million years old. It is orbited by four planets—Kepler-51b, c, d and e—first three of which are super-puffs and have the lowest known densities of any known exoplanet. The transiting planets in the system (b, c and d) are similar in radius to gas giants like Jupiter, but have unusually small masses for their size, only a few times greater than Earth's.
Wikidata facts
- Distance from Earth
- 801.76
- Radius
- 0.94
- Mass
- 1.04
Show 17 more facts
- catalog code
- SPOCS 4255
- effective temperature
- 6018
- metallicity
- -0.07
- parallax
- 1.2457
- stellar rotational velocity
- 5.4
- surface gravity
- 21400
- Commons category
- Kepler-51
- luminosity
- 0.6602955
- time of discovery or invention
- 2003-00-00
- right ascension component of proper motion
- 0.075
- declination component of proper motion
- -7.451
- right ascension
- 296.47976192894
- declination
- 49.93768070019
- radial velocity
- -5.4
- spectral class
- G4
- apparent magnitude
- 13.197
- age estimated by a dating method
- 0.3
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Article
9 sectionsContents
- Properties
- Planetary system
- Kepler-51b
- Kepler-51c
- Kepler-51d
- Kepler-51e
- See also
- References
- Further reading
Kepler-51 is a Sun-like star that is about 500 million years old. It is orbited by four planets—Kepler-51b, c, d and e—first three of which are super-puffs and have the lowest known densities of any known exoplanet. The transiting planets in the system (b, c and d) are similar in radius to gas giants like Jupiter, but have unusually small masses for their size, only a few times greater than Earth's.
== Properties == Kepler-51 is a small G-type star, with a slightly lower radius, mass and effective temperature than the Sun. It is a young star, less than one billion years old, and hence is highly active compared to the Sun. Around 4 to 6% of the star's surface is covered by starspots. Its EUV and X-ray fluxes are likely influencing the chemistry, dynamics and atmospheric mass loss of its planets.