astro.wikisort.org - StarKepler-63 is a G-type main-sequence star about 638 light-years away. The star is much younger than the Sun, at 0.21 billion years. Kepler-63 is similar to the Sun in its concentration of heavy elements.
Star in the constellation Cygnus
Kepler-63
Observation data
Epoch J2000 Equinox J2000 |
| Constellation |
Cygnus |
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| Right ascension |
19h 16m 54.2861s[1] |
| Declination |
49° 32′ 53.451″[1] |
| Apparent magnitude (V) |
12.02 |
| Characteristics |
| Evolutionary stage |
Main sequence |
| Spectral type |
G5 |
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| Astrometry |
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| Radial velocity (Rv) | −21.7±0.8[2] km/s |
| Proper motion (μ) | RA: 14.375[2] mas/yr
Dec.: 23.336[2] mas/yr |
| Parallax (π) | 5.1157 ± 0.0096 mas[2] |
| Distance | 638 ± 1 ly
(195.5 ± 0.4 pc) |
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| Details[3] |
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| Mass | 0.984+0.035
−0.040 M☉ |
| Radius | 0.901+0.027
−0.021 R☉ |
| Luminosity | 0.696+0.076
−0.059[4] L☉ |
| Surface gravity (log g) | 4.52±0.02 cgs |
| Temperature | 5576±50 K |
| Metallicity [Fe/H] | 0.05±0.08[4] dex |
| Rotation | 5.4±0.009 days |
| Rotational velocity (v sin i) | 5.6±0.8[4] km/s |
| Age | 0.21±0.045 Gyr |
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| Other designations |
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KOI-63, TYC 3550-458-1, 2MASS J19165428+4932535, Gaia EDR3 2132628489996257920 [1] |
| Database references |
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| SIMBAD | data |
The star is exhibiting strong starspot activity, with relatively cold (4700±300 K) starspots concentrated in two mid-latitude bands similar to the Sun,[3] changing their position in a cycle with a period of 1.27±0.16 years.[5] Due to high magnetic activity associated with its young age, Kepler-63 has a very hot corona heated to 8 million degrees, and produces over ten times the solar amount of x-rays than the Sun.[6]
Multiplicity surveys did not detect any stellar companions to Kepler-63 by 2016.[7]
Planetary system
In 2013 a transiting hot Jupiter planet b was detected on a tight orbit. The orbit is nearly polar to the equatorial plane of the star.[4]
The Kepler-63 planetary system
Companion
(in order from star) |
Mass |
Semimajor axis
(AU) |
Orbital period
(days) |
Eccentricity |
Inclination |
Radius |
| b |
< 0.377[6] MJ |
0.080±0.002[6] |
9.4341505±0.000001[3] |
<0.45[4] |
87.806+0.018
−0.019[3]° |
0.54±0.02[6] RJ |
References
- "Kepler-63", SIMBAD, Centre de données astronomiques de Strasbourg
- Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- Netto, Y.; Valio, A. (2020), "Stellar magnetic activity and the butterfly diagram of Kepler-63", Astronomy & Astrophysics, 635: A78, arXiv:1911.08661, Bibcode:2020A&A...635A..78N, doi:10.1051/0004-6361/201936219, S2CID 208176115
- Sanchis-Ojeda, Roberto; Winn, Joshua N.; Marcy, Geoffrey W.; Howard, Andrew W.; Isaacson, Howard; Johnson, John Asher; Torres, Guillermo; Albrecht, Simon; Campante, Tiago L.; Chaplin, William J.; Davies, Guy R.; Lund, Mikkel N.; Carter, Joshua A.; Dawson, Rebekah I.; Buchhave, Lars A.; Everett, Mark E.; Fischer, Debra A.; Geary, John C.; Gilliland, Ronald L.; Horch, Elliott P.; Howell, Steve B.; Latham, David W. (2013), "KEPLER-63b: A GIANT PLANET IN a POLAR ORBIT AROUND a YOUNG SUN-LIKE STAR", The Astrophysical Journal, 775 (1): 54, arXiv:1307.8128, Bibcode:2013ApJ...775...54S, doi:10.1088/0004-637X/775/1/54, S2CID 36615256
- Estrela, Raissa; Valio, Adriana (2016), Stellar magnetic cycles in the solar-like stars Kepler-17 and Kepler-63, arXiv:1608.07322
- Lalitha, Sairam; Schmitt, J H M M.; Dash, Spandan (2018), "Atmospheric mass-loss of extrasolar planets orbiting magnetically active host stars", Monthly Notices of the Royal Astronomical Society, 477: 808–815, arXiv:1803.08684, doi:10.1093/mnras/sty732
- Furlan, E.; Ciardi, D. R.; Everett, M. E.; Saylors, M.; Teske, J. K.; Horch, E. P.; Howell, S. B.; Van Belle, G. T.; Hirsch, L. A.; Gautier, T. N.; Adams, E. R.; Barrado, D.; Cartier, K. M. S.; Dressing, C. D.; Dupree, A. K.; Gilliland, R. L.; Lillo-Box, J.; Lucas, P. W.; Wang, J. (2016), "Thekeplerfollow-Up Observation Program. I. A Catalog of Companions Tokeplerstars from High-Resolution Imaging", The Astronomical Journal, 153 (2): 71, arXiv:1612.02392, doi:10.3847/1538-3881/153/2/71, S2CID 38339900
На других языках
- [en] Kepler-63
[ru] Kepler-63
Kepler-63 — звезда, которая находится в созвездии Лебедь на расстоянии около 652 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета.
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