Kepler-80
Kepler-80, also known as KOI-500, is a red dwarf star of the spectral type M0V. This stellar classification places Kepler-80 among the very common, cool, class M stars that are still within their main evolutionary stage, known as the main sequence. Kepler-80, like other red dwarf stars, is smaller than the Sun, and it has both radius, mass, temperatures, and luminosity lower than that of our own star. Kepler-80 is found approximately 1,223 light years from the Solar System, in the stellar constellation Cygnus, also known as the Swan.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 44m 27.0201s |
| Declination | 39° 58′ 43.594″ |
| Apparent magnitude (V) | 14.804 |
| Characteristics | |
| Spectral type | M0V |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: −1.373(20) mas/yr Dec.: −7.207(24) mas/yr |
| Parallax (π) | 2.6675 ± 0.0183 mas |
| Distance | 1,223 ± 8 ly (375 ± 3 pc) |
| Details | |
| Mass | 0.730 M☉ |
| Radius | 0.678 R☉ |
| Luminosity | 0.170 L☉ |
| Temperature | 4540 K |
| Metallicity [Fe/H] | −0.56 dex |
| Rotation | 25.567±0.252 days |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
The Kepler-80 system has 6 known exoplanets. The discovery of the five inner planets was announced in October 2012, marking Kepler-80 as the first star identified with five orbiting planets. In 2017, an additional planet, Kepler-80g, was discovered by use of artificial intelligence and deep learning to analyse data from the Kepler space telescope. The method used to discover Kepler-80g had been developed by Google, and during the same study another planet was found, Kepler-90i, which brought the total number of known planets in Kepler-90 up to 8 planets.