| 词条 | HD 195019 |
| 释义 |
| name = HD 195019 }}{{Starbox observe | epoch = J2000.0 | constell = Delphinus | ra = {{RA|20|28|18.6367}}[1] | dec = {{DEC|+18|46|10.1799}}[1] | appmag_v = 6.91 }}{{Starbox character | class = G3IV-V | r-i = | v-r = | b-v = | u-b = | variable = }}{{Starbox astrometry | radial_v = | prop_mo_ra = {{val|349.644|0.058}}[1] | prop_mo_dec = {{val|−56.571|0.059}}[1] | parallax = 26.5188 | p_error = 0.0467 | parallax_footnote = [1] | absmag_v = }}{{Starbox detail | mass = | radius = | luminosity = | gravity = | temperature = | metal_fe = | rotation = | age_gyr = }}{{Starbox catalog | names = BD+18° 4505, GCRV 12790, HD 195019 HIP 100970, LTT 15981, NLTT 49312, SAO 106138 }}{{Starbox reference | Simbad = HD+195019 | ARICNS = }}{{Starbox end}} 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 {{convert|123|ly|pc|abbr=off|lk=on}} away from the Sun, Earth and Solar System. It{{which|date=July 2015}} is a yellow dwarf or subgiant [G3IV-V]. Planetary systemIn 1998, a planet was discovered at Lick Observatory, orbiting around Star A.[6] {{OrbitboxPlanet begin| table_ref = }}{{OrbitboxPlanet | exoplanet = b | mass = >3.69 ± 0.30 | period = 18.20132 ± 0.00039 | semimajor = 0.1388 ± 0.0080 | eccentricity = 0.0138 ± 0.0044 }}{{Orbitbox end}} See also
References1. ^1 {{cite journal | title=Planetary Companions around Two Solar-Type Stars: HD 195019 and HD 217107 | last1=Fischer | first1=Debra A. | last2=Marcy | first2=Geoffrey W. | last3=Butler | first3=R. Paul | last4=Vogt | first4=Steven S. | last5=Apps | first5=Kevin | display-authors=1 | journal=Publications of the Astronomical Society of the Pacific | volume=111 | issue=755 | pages=50–56 | year=1999 | arxiv=astro-ph/9810420 | bibcode=1999PASP..111...50F | doi=10.1086/316304 }} [1][2]2. ^1 2 3 4 5 {{Cite Gaia DR2|1815418118373631360}} }} External links{{Sky|20|28|18.6363|+|18|46|10.188|65}}{{Stars of Delphinus}}{{main-star-stub}}{{multi-star-stub}}{{subgiant-star-stub}} 8 : Binary stars|G-type main-sequence stars|G-type subgiants|Henry Draper Catalogue objects|Hipparcos objects|Delphinus (constellation)|Planetary systems|Durchmusterung objects |
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