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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 44m 27.0201s[1] |
| Declination | 39° 58′ 43.594″[1] |
| Apparent magnitude (V) | 14.804 |
| Characteristics | |
| Spectral type | M0V[2] |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: −1.373(20) mas/yr[1] Dec.: −7.207(24) mas/yr[1] |
| Parallax (π) | 2.6675±0.0183 mas[1] |
| 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 [3] dex |
| Rotation | 25.567±0.252 days[4] |
| Other designations | |
| KOI-500, KIC 4852528, 2MASS J19442701+3958436[2] | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-80, also known as KOI-500, is a red dwarf star of the spectral type M0V.[2] 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.[5] Kepler-80 is found approximately 1,223 light years from the Solar System, in the stellar constellation Cygnus, also known as the Swan.
The Kepler-80 system has 6 known exoplanets.[6][7] The discovery of the five inner planets was announced in October 2012, marking Kepler-80 as the first star identified with five orbiting planets.[8][5] 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.[7] 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.[9]
- ^ a b c d Cite error: The named reference
Gaia DR3was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
Simbadwas invoked but never defined (see the help page). - ^ "OASIS". Abstractsonline.com. Retrieved 2012-11-22.
- ^ Cite error: The named reference
McQuillan2013was invoked but never defined (see the help page). - ^ a b MacDonald, Mariah G.; Ragozzine, Darin; Fabrycky, Daniel C.; Ford, Eric B.; Holman, Matthew J.; Isaacson, Howard T.; Lissauer, Jack J.; Lopez, Eric D.; Mazeh, Tsevi (October 2016). "A Dynamical Analysis of the Kepler-80 System of Five Transiting Planets". The Astronomical Journal. 152 (4): 105. arXiv:1607.07540. Bibcode:2016AJ....152..105M. doi:10.3847/0004-6256/152/4/105. ISSN 1538-3881. S2CID 119265122.
- ^ Xie, J.-W. (2013). "Transit timing variation of near-resonance planetary pairs: confirmation of 12 multiple-planet systems". Astrophysical Journal Supplement Series. 208 (2): 22. arXiv:1208.3312. Bibcode:2013ApJS..208...22X. doi:10.1088/0067-0049/208/2/22. S2CID 17160267.
- ^ a b Shallue, C. J.; Vanderburg, A. (2017). "Identifying Exoplanets With Deep Learning: A Five Planet Resonant Chain Around Kepler-80 And An Eighth Planet Around Kepler-90" (PDF). The Astrophysical Journal. 155 (2): 94. arXiv:1712.05044. Bibcode:2018AJ....155...94S. doi:10.3847/1538-3881/aa9e09. S2CID 4535051. Retrieved 2017-12-15.
- ^ Ragozzine, Darin; Kepler Team (2012-10-01). "The Very Compact Five Exoplanet System KOI-500: Mass Constraints from TTVs, Resonances, and Implications". AAS/Division for Planetary Sciences Meeting Abstracts #44. 44: 200.04. Bibcode:2012DPS....4420004R.
- ^ St. Fleur, Nicholas (14 December 2017). "An 8th Planet Is Found Orbiting a Distant Star, With A.I.'s Help". The New York Times. Retrieved 15 December 2017.
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