Kepler-17
Kepler-17 is a main-sequence yellow dwarf star that is much more active than our Sun with starspots covering roughly 6% of its surface.[5] This star is known to host one exoplanet, Kepler-17b, in orbit around it.[6]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 53m 34.8643s[1] |
| Declination | +47° 48′ 54.050″[1] |
| Apparent magnitude (V) | 14.0[2] |
| Astrometry | |
| Proper motion (μ) | RA: −3.778±0.032[1] mas/yr Dec.: −6.365±0.035[1] mas/yr |
| Parallax (π) | 1.3589 ± 0.0198[1] mas |
| Distance | 2,400 ± 30 ly (740 ± 10 pc) |
| Characteristics | |
| Spectral type | G2V[2] |
| Details[2] | |
| Mass | 1.16±0.06 M☉ |
| Radius | 1.05±0.03 R☉ |
| Temperature | 5781±85 K |
| Metallicity [Fe/H] | 0.26 (± 0.1) dex |
| Rotation | 12.159±0.029 days[3] |
| Rotational velocity (v sin i) | 4.2±0.5[4] km/s |
| Age | <1.78 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.
- "Notes on Kepler-17 b". Retrieved 15 January 2017.
- McQuillan, A.; Mazeh, T.; Aigrain, S. (2013). "Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators". The Astrophysical Journal Letters. 775 (1). L11. arXiv:1308.1845. Bibcode:2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11.
- "Kepler-17". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 January 2017.
- Valio, Adriana; et al. (2017). "Activity and Rotation of Kepler-17". The Astrophysical Journal. 835 (2). 294. arXiv:1702.02213. Bibcode:2017ApJ...835..294V. doi:10.3847/1538-4357/835/2/294.
- Désert, Jean-Michel; et al. (2011). "The Hot-Jupiter Kepler-17b: Discovery, Obliquity from Stroboscopic Starspots, and Atmospheric Characterization". The Astrophysical Journal Supplement Series. 197 (1). 14. arXiv:1107.5750. Bibcode:2011ApJS..197...14D. doi:10.1088/0067-0049/197/1/14.
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