Kepler-41
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) | ±0.008 −27.066[3] km/s |
Proper motion (μ) | RA: ±0.041 3.037[1] mas/yr Dec.: ±0.046 2.999[1] mas/yr |
Parallax (π) | 0.8864 ± 0.0224[1] mas |
Distance | 3,680 ± 90 ly (1,130 ± 30 pc) |
Details[3] | |
Mass | ±0.04 1.15 M☉ |
Radius | ±0.02 1.29 R☉ |
Surface gravity (log g) | ±0.005 4.278 cgs |
Temperature | ±100 5750 K |
Metallicity [Fe/H] | ±0.11 0.38 dex |
Rotational velocity (v sin i) | ±2 6 km/s |
Age | +1.3 −1.1 4.4 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 (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] There is one known extrasolar planet orbiting Kepler-41.[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.[5]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ±0.08 0.56 MJ | 01±0.0004 0.031 | 55820±0.00000052 1.855 | 0 (fixed) | ±0.09 82.51° | ±0.02 1.29 RJ |
References
- 1 2 3 4 5 6 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
- ↑ "Notes on Kepler-41 b". Retrieved 21 January 2017.
- 1 2 3 4 5 6 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.
- ↑ "KOI-952". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 January 2017.
- 1 2 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.