Kepler-56 is a

red giant A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses ()) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius large and the surface temperature around or ...

in constellation Cygnus roughly away with slightly more mass than the Sun.

Planetary system

In 2012, scientists discovered a 2-planet planetary system around Kepler-56 via the transit method. Asteroseismological studies revealed that the orbits of Kepler-56b and

Kepler-56c Kepler-56c is a hot Jupiter (a class of exoplanets) orbiting the star Kepler-56, located in the constellation Cygnus. It was discovered by the ''Kepler'' telescope in October 2013. It orbits its parent star only away; at its distance, it complet ...

are coplanar but about 45° misaligned to the host star's equator. In addition, follow-up radial velocity measurements showed evidence of a gravitational perturbator. It was confirmed in 2016 the perturbations are caused by third, non-transiting planet. The planetary system is very compact but is dynamically stable. The expanding star will devour Kepler-56b and Kepler-56c in 130 and 155 million years, respectively.

References

External links

Kepler-56, The Open Exoplanet Catalogue

Kepler 56, Exoplanet.eu
Cygnus (constellation)

1241 Year 1241 ( MCCXLI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events * March 18 – Battle of Chmielnik ( Mongol invasion of Poland): The Mongols overwhelm the feudal Polish armi ...

Planetary transit variables K-type giants Planetary systems with three confirmed planets {{giant-star-stub