| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 31m 29.4966s[2] |
| Declination | +41° 03′ 51.356″[2] |
| Apparent magnitude (V) | 16.88[3] |
| Characteristics | |
| Spectral type | M1 V[4] |
| Astrometry | |
| Proper motion (μ) | RA: 4.646(36) mas/yr[2] Dec.: −21.589(36) mas/yr[2] |
| Parallax (π) | 2.5984 ± 0.0331 mas[2] |
| Distance | 1,260 ± 20 ly (385 ± 5 pc) |
| Details | |
| Mass | 0.59 ± 0.06[5] M☉ |
| Radius | 0.55 ± 0.11[5] R☉ |
| Temperature | 3820 ± 90[5] K |
| Metallicity [Fe/H] | 0.13 ± 0.13[5] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-45, formerly known as KOI-254, is a star in the northern constellation of Cygnus. It is located at the celestial coordinates: right ascension 19h 31m 29.495s, declination +41° 03′ 51.37″.[6] With an apparent visual magnitude of 16.88,[4] this star is too faint to be seen with the naked eye.
The star is exhibiting strong starspot activity, with 4.1±2.5% of its surface covered by starspots.[7]
- ^ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- ^ a b c d Cite error: The named reference
Gaia DR3was invoked but never defined (see the help page). - ^ "Kepler-45". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 January 2018.
- ^ a b Muirhead, Philip S.; Hamren, Katherine; Schlawin, Everett; Rojas-Ayala, Bárbara; Covey, Kevin R.; et al. (May 2012). "Characterizing the Cool Kepler Objects of Interests. New Effective Temperatures, Metallicities, Masses, and Radii of Low-mass Kepler Planet-candidate Host Stars". The Astrophysical Journal Letters. 750 (2). L37. arXiv:1109.1819. Bibcode:2012ApJ...750L..37M. doi:10.1088/2041-8205/750/2/L37. S2CID 27131741.
- ^ a b c d Kepler-45b, NASA Ames Research Center, archived from the original on 2015-09-19, retrieved 2011-12-06
- ^ "Kepler Discoveries". 2011-12-05. Archived from the original on 2010-05-27.
- ^ Activity and differential rotation of the early M dwarf Kepler-45 from transit mapping