Kepler-28
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 28m 32.8905s[2] |
| Declination | +42° 25′ 45.959″[2] |
| Apparent magnitude (V) | 15.306[3] |
| Characteristics | |
| Spectral type | M0V[4] |
| Astrometry | |
| Proper motion (μ) | RA: −0.488±0.042[2] mas/yr Dec.: 11.692±0.042[2] mas/yr |
| Parallax (π) | 2.2527 ± 0.0241[2] mas |
| Distance | 1,450 ± 20 ly (444 ± 5 pc) |
| Details | |
| Mass | 0.75[3] M☉ |
| Radius | 0.70[3] R☉ |
| Luminosity | [3] L☉ |
| Temperature | 4590[3] K |
| Metallicity [Fe/H] | 0.34[3] dex |
| Rotation | 17.951±0.016 days[5] |
| Rotational velocity (v sin i) | 0.6[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-28 is a star in the northern constellation of Cygnus., It is orbited by two exoplanets. It is located at the celestial coordinates: Right Ascension 19h 28m 32.887s, Declination +42° 25′ 45.91″.[6] With an apparent visual magnitude of 15.036,[3] this star is too faint to be seen with the naked eye.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 1.51 MJ | 0.062 | 5.9123 | — | — | — |
| c | 1.36 MJ | 0.081 | 8.9858 | — | — | — |
References
- ↑ "Cygnus – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- 1 2 3 4 5 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 Data Release 2 Vizier catalog entry
- 1 2 3 4 5 6 7 8 Kepler-28b, NASA Ames Research Center, retrieved 2011-12-06
- ↑ "Kepler-28". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 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 Discoveries". 2011-12-05.
- ↑ Schneider, Jean, "Star: Kepler-28", Extrasolar Planets Encyclopaedia, Paris Observatory, archived from the original on 2012-04-26, retrieved 2011-12-06
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