astro.wikisort.org - Planet
Kepler-41 or KOI-196 is a star in the constellation Cygnus. It is a G-type main-sequence star, like the Sun, and it is located about 3,68 light-years (1130 parsecs) away.[1] It is fairly similar to the Sun, with 115% of its mass, a radius of 129% times that of the Sun, and a surface temperature of 5,750 K.[3] Search for stellar companions to Kepler-41 in 2013-2014 has yielded inconclusive results, compatible with Kepler-41 being the single star.[5]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 38m 03.1746s[1] |
| Declination | +45° 58′ 53.877″[1] |
| Apparent magnitude (V) | 14.5[2] |
| Characteristics | |
| Spectral type | G2V[3] |
| Astrometry | |
| Radial velocity (Rv) | −27.066±0.008[3] km/s |
| Proper motion (μ) | RA: 3.037±0.041[1] mas/yr Dec.: 2.999±0.046[1] mas/yr |
| Parallax (π) | 0.8864 ± 0.0224 mas[1] |
| Distance | 3,680 ± 90 ly (1,130 ± 30 pc) |
| Details[3] | |
| Mass | 1.15±0.04 M☉ |
| Radius | 1.29±0.02 R☉ |
| Surface gravity (log g) | 4.278±0.005 cgs |
| Temperature | 5750±100 K |
| Metallicity [Fe/H] | 0.38±0.11 dex |
| Rotational velocity (v sin i) | 6±2 km/s |
| Age | 4.4+1.3 −1.1 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Planetary system
In 2011, the planet Kepler-41b was discovered in orbit around the star. The planet orbits extremely close to Kepler-41, completing an orbit once every 1.86 days. Despite it receiving a high amount of radiation from Kepler-41, the radius of the Kepler-41b was initially believed to be less than that of Jupiter making it unusual for a hot Jupiter however later observations showed an inflated radius similar to other hot jupiters.[3] Kepler-41b is also quite reflective, with a geometric albedo of 0.30.[6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.56±0.08 MJ | 0.03101±0.0004 | 1.85555820±0.00000052 | 0 (fixed) | 82.51±0.09° | 1.29±0.02 RJ |
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-41 b". Retrieved 21 January 2017.
- Bonomo, A. S.; et al. (2015). "Improved parameters of seven Kepler giant companions characterized with SOPHIE and HARPS-N". Astronomy and Astrophysics. 575. A85. arXiv:1501.02653. Bibcode:2015A&A...575A..85B. doi:10.1051/0004-6361/201323042. S2CID 119230291.
- "KOI-952". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 January 2017.
- Esteves, Lisa J.; Mooij, Ernst J. W. De; Jayawardhana, Ray (2014), "Changing Phases of Alien Worlds: Probing Atmospheres Of Kepler Planets with High-Precision Photometry", The Astrophysical Journal, 804 (2): 150, arXiv:1407.2245, doi:10.1088/0004-637X/804/2/150, S2CID 117798959
- Santerne, A.; et al. (2011). "SOPHIE velocimetry of Kepler transit candidates IV. KOI-196b: a non-inflated hot Jupiter with a high albedo". Astronomy and Astrophysics. 536. A70. arXiv:1108.0550. Bibcode:2011A&A...536A..70S. doi:10.1051/0004-6361/201117807. S2CID 119025355.
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На других языках
- [en] Kepler-41
[ru] KOI-196
KOI-196 — звезда, которая находится в созвездии Лебедя на расстоянии около 2380 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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