Kepler-41

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)	−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
	KIC 9410930, KOI-196, UCAC3 272-156898, 2MASS J19380317+4558539[4]
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]

The Kepler-41 planetary system[3]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	0.56±0.08 M_J	0.03101±0.0004	1.85555820±0.00000052	0 (fixed)	82.51±0.09°	1.29±0.02 R_J

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.
"KOI-952". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 January 2017.
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.

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[Gaia_DR2-1] 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.

[EU-2] "Notes on Kepler-41 b". Retrieved 21 January 2017.

[Bonomo2015-3] 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.

[simbad-4] "KOI-952". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 January 2017.

[Santerne2011-5] 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.