Kepler-19

Last updated
Kepler-19
Observation data
Epoch J2000       Equinox J2000
Constellation Lyra [1]
Right ascension 19h 21m 40.99950s [2]
Declination +37° 51′ 06.4373″ [2]
Apparent magnitude  (V)12.04 [3]
Astrometry
Radial velocity (Rv)−11.36±0.53 [2] km/s
Proper motion (μ)RA: 25.349 mas/yr [2]
Dec.: −30.792 mas/yr [2]
Parallax (π)4.5296±0.0087  mas [2]
Distance 720 ± 1  ly
(220.8 ± 0.4  pc)
Details
Mass 0.936±0.04 [4]   M☉
Radius 0.859±0.018 [4]   R☉
Surface gravity (log g)4.54 [5]   cgs
Temperature 5541±60 [4]   K
Metallicity [Fe/H]−0.13±0.06 [4]   dex
Rotational velocity (v sin i)1.8±0.5 [6]  km/s
Age 1.9±1.7 [4]   Gyr
Other designations
KIC 2571238, KOI-84, TYC 3134-1549-1, GSC 03134-01549, 2MASS J19214099+3751064, Gaia DR2 2051106987063242880 [5]
Database references
SIMBAD data
KIC data

Kepler-19 (TYC 3134-1549-1, 2MASS J19214099+3751064, GSC 03134-01549, KOI-84) [5] is a G7V star that is host to three known planets - Kepler-19b, Kepler-19c, and Kepler-19d. It is located about 720 light-years (220 parsecs ) away in the constellation Lyra, five arcminutes northwest of the much more distant open cluster NGC 6791.

Contents

Planetary system

There are three known planets in the Kepler-19 planetary system. Planet b was discovered by the transit method, c by transit-timing variations [7] and d by radial velocity measurements. [8]

The Kepler-19 planetary system [8] [4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 8.4+1.6
−1.5  M🜨 		0.0846±0.00129.28699000.12±0.0289.94+0.06
−0.44 ° 		2.209±0.048  R🜨
c 13.1±2.7  M🜨 —28.731+0.012
−0.005		0.21+0.05
−0.07		——
d22.5+1.2
−5.6  M🜨 		—62.95+0.04
−0.30		0.05+0.16
−0.01		——

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. ↑ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 –L30. Bibcode:2000A&A...355L..27H.
  4. 1 2 3 4 5 6 Bonomo, A. S.; Dumusque, X.; et al. (April 2023). "Cold Jupiters and improved masses in 38 Kepler and K2 small-planet systems from 3661 high-precision HARPS-N radial velocities. No excess of cold Jupiters in small-planet systems". Astronomy & Astrophysics . arXiv: 2304.05773 . Bibcode:2023A&A...677A..33B. doi:10.1051/0004-6361/202346211. S2CID   258078829.
  5. 1 2 3 "KOI-84". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 21 January 2017.
  6. ↑ Buchhave, Lars A.; et al. (2012). "An abundance of small exoplanets around stars with a wide range of metallicities". Nature. 486 (7403): 375–377. Bibcode:2012Natur.486..375B. doi:10.1038/nature11121. PMID   22722196. S2CID   4427321.
  7. ↑ Ballard, Sarah; et al. (2011). "The Kepler-19 System: A Transiting 2.2R🜨 Planet and a Second Planet Detected Via Transit Timing Variations". The Astrophysical Journal. 743 (2). 200. arXiv: 1109.1561 . Bibcode: 2011ApJ...743..200B . doi: 10.1088/0004-637X/743/2/200 .
  8. 1 2 Malavolta, Luca; et al. (2017). "The Kepler-19 System: A Thick-envelope Super-Earth with Two Neptune-mass Companions Characterized Using Radial Velocities and Transit Timing Variations". The Astronomical Journal. 153 (5). 224. arXiv: 1703.06885 . Bibcode: 2017AJ....153..224M . doi: 10.3847/1538-3881/aa6897 .
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