Astronomy:Kepler-41
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[1] mas |
| 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 |
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 3,680 light-years (1,130 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]
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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ "Notes on Kepler-41 b". Extrasolar Planets Encyclopaedia. http://exoplanet.eu/catalog/kepler-41__b/.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Bonomo, A. S. et al. (2015). "Improved parameters of seven Kepler giant companions characterized with SOPHIE and HARPS-N". Astronomy and Astrophysics 575: A85. doi:10.1051/0004-6361/201323042. Bibcode: 2015A&A...575A..85B. https://www.aanda.org/articles/aa/full_html/2015/03/aa23042-13/aa23042-13.html.
- ↑ "KOI-952". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=KOI-952.
- ↑ 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, doi:10.1088/0004-637X/804/2/150, Bibcode: 2015ApJ...804..150E
- ↑ 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. doi:10.1051/0004-6361/201117807. Bibcode: 2011A&A...536A..70S. http://www.aanda.org/articles/aa/full_html/2011/12/aa17807-11/aa17807-11.html.
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