Kepler-41

Last updated
Kepler-41
Observation data
Epoch J2000       Equinox J2000
Constellation Cygnus [1]
Right ascension 19h 38m 03.1747s [2]
Declination +45° 58′ 53.877″ [2]
Apparent magnitude  (V)14.5 [3]
Characteristics
Spectral type G2V [4]
Astrometry
Radial velocity (Rv)−27.066±0.008 [4] km/s
Proper motion (μ)RA: 3.001(19) mas/yr [2]
Dec.: 2.965(20) mas/yr [2]
Parallax (π)0.9283±0.0156  mas [2]
Distance 3,510 ± 60  ly
(1,080 ± 20  pc)
Details [4]
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, Gaia DR2 2080061942886335744 [5]
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 3,510 light-years (1,080 parsecs) away. [2] 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. [4] Search for stellar companions to Kepler-41 in 2013-2014 has yielded inconclusive results, compatible with Kepler-41 being the single star. [6]

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. [4] Kepler-41b is also quite reflective, with a geometric albedo of 0.30. [7]

The Kepler-41 planetary system [4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.56±0.08  MJ 0.03101±0.00041.85555820±0.000000520 (fixed)82.51±0.09 ° 1.29±0.02  RJ

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. ↑ "Notes on Kepler-41 b". Extrasolar Planets Encyclopaedia . Archived from the original on 9 October 2020. Retrieved 21 January 2017.
  4. 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. S2CID   119230291.
  5. ↑ "KOI-952". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 21 January 2017.
  6. ↑ 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 , Bibcode:2015ApJ...804..150E, doi:10.1088/0004-637X/804/2/150, S2CID   117798959
  7. ↑ 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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