HD 195019

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HD 195019
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Delphinus
Right ascension 20h 28m 18.6363s[1]
Declination +18° 46′ 10.188″[1]
Apparent magnitude (V) 6.91
Characteristics
Spectral type G3IV-V
Astrometry
Proper motion (μ) RA: 348.48±0.90[1] mas/yr
Dec.: −58.39±0.74[1] mas/yr
Parallax (π)25.96 ± 0.99[1] mas
Distance126 ± 5 ly
(39 ± 1 pc)
Details
Other designations
BD+18° 4505, GCRV 12790, HD 195019 HIP 100970, LTT 15981, NLTT 49312, SAO 106138
Database references
SIMBADdata

HD 195019 (HIP 100970, SAO 106138) is a star system in the constellation of Delphinus. Star B is located approximately 150 AU from Star A. This star system is located 65 light-years (20 parsecs; 0.61 exametres) away from the Sun, Earth and Solar System. It[which?] is a yellow dwarf or subgiant [G3IV-V].

Planetary system[edit]

In 1998, a planet was discovered at Lick Observatory, orbiting around Star A.[2]

The HD 195019 planetary system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >3.69 ± 0.30 MJ 0.1388 ± 0.0080 18.20132 ± 0.00039 0.0138 ± 0.0044

See also[edit]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ Fischer, Debra A.; et al. (1999). "Planetary Companions around Two Solar-Type Stars: HD 195019 and HD 217107". Publications of the Astronomical Society of the Pacific. 111 (755): 50–56. arXiv:astro-ph/9810420Freely accessible. Bibcode:1999PASP..111...50F. doi:10.1086/316304. 
  3. ^ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493Freely accessible. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. 

External links[edit]

Coordinates: Sky map 20h 28m 18.6363s, +18° 46′ 10.188″