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Kepler-31
Sign in to saveKepler-31 is a star in the northern constellation of Cygnus, the swan. It is orbited by three known exoplanets. It is located at the celestial coordinates: Right Ascension , Declination . With an apparent visual magnitude of 14.0, this star is too faint to be seen with the naked eye.
Astronomical data · SIMBAD
- Object type
- Er*
- Distance
- 5,424 light-years
- Redshift
- z = 0.00003585211163881219
- Coordinates
- RA 294.0230° · Dec 45.8531°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Instance of
- eruptive variable star
- Constellation
- Cygnus
- Distance from Earth
- 1663.06
- Diameter
- 2200000
- Radius
- 1.163
- Mass
- 1.185
- Variable-star type
- rotating variable star
Show 17 more facts
- metallicity
- 0.12
- Commons category
- Kepler-31
- catalog code
- KOI-935
- effective temperature
- 6505
- parallax
- 0.6013
- stellar rotational velocity
- 7.41
- apparent magnitude
- 15.288
- surface gravity
- 22000
- epoch
- J2000.0
- luminosity
- 1.8429646
- discoverer or inventor
- 2MASS
- time of discovery or invention
- 2003-00-00
- right ascension component of proper motion
- -1.007
- declination component of proper motion
- -7.439
- right ascension
- 294.02302910322
- declination
- 45.85308552241
- radial velocity
- 10.748
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
2 sectionsContents
- Planetary system
- References
Kepler-31 is a star in the northern constellation of Cygnus, the swan. It is orbited by three known exoplanets. It is located at the celestial coordinates: Right Ascension , Declination . With an apparent visual magnitude of 14.0, this star is too faint to be seen with the naked eye.
==Planetary system== The three gas giant planets orbiting Kepler-31 were discovered in early 2011, albeit with large false alarm probability, and were confirmed in 2012. The planets form a resonant chain, with orbital periods ratio 1:2:4, although 20% probability exists that these period ratios may be coincidental.
Excerpted from Wikipedia’s “Kepler-31” article, available under the CC BY-SA 4.0 licence.