Kepler-421
Kepler-421 is a star. Kepler-421 has an exoplanet orbiting it (Kepler-421b), which is notable for its position near the snow line.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 53m 01.6406s[1] |
| Declination | 45° 5′ 15.9725″[1] |
| Apparent magnitude (V) | 13.56±0.04[2] |
| Characteristics | |
| Evolutionary stage | Dwarf |
| Spectral type | G9/K0[2] |
| Astrometry | |
| Proper motion (μ) | RA: −4.010±0.032[1] mas/yr Dec.: −20.398±0.037[1] mas/yr |
| Parallax (π) | 2.8401 ± 0.0166[1] mas |
| Distance | 1,148 ± 7 ly (352 ± 2 pc) |
| Details | |
| Mass | 0.76[3] M☉ |
| Radius | 0.84[3] R☉ |
| Luminosity | 0.451[1] L☉ |
| Surface gravity (log g) | 4.54[3] cgs |
| Temperature | 5,308±50[2] K |
| Metallicity [Fe/H] | −0.25±0.08[2] dex |
| Rotation | 28.5±0.3 d[2] |
| Rotational velocity (v sin i) | 1.5±0.5[3] km/s |
| Age | 14.38[3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
References
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- Kipping, D. M.; Torres, G.; Buchhave, L. A.; Kenyon, S. J.; Henze, C.; Isaacson, H.; Kolbl, R.; Marcy, G. W.; Bryson, S. T.; Stassun, K.; Bastien, F. (9 October 2014). "Discovery of a Transiting Planet Near the Snow-Line". The Astrophysical Journal. 795 (1): 25. arXiv:1407.4807. Bibcode:2014ApJ...795...25K. doi:10.1088/0004-637X/795/1/25.
- Brewer, John M.; Fischer, Debra A. (2018). "Spectral Properties of Cool Stars: Extended Abundance Analysis of Kepler Objects of Interest". The Astrophysical Journal Supplement Series. 237 (2): 38. arXiv:1804.00673. Bibcode:2018ApJS..237...38B. doi:10.3847/1538-4365/aad501.
- "Kepler-421". SIMBAD. Centre de données astronomiques de Strasbourg.
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