| 词条 | HD 191806 |
| 释义 |
| name = HD 191806 }}{{Starbox observe | epoch = J2000.0 | constell = Cygnus | ra = {{RA|20|09|28.30960}}[1] | dec = {{DEC|+52|16|34.79}}[1] | appmag_v = 8.093 }}{{Starbox character | class = K0 | appmag_1_passband = B | appmag_1 = 8.71 | appmag_2_passband = J | appmag_2 = 6.966[5] | appmag_3_passband = H | appmag_3 = 6.713[5] | appmag_4_passband = K | appmag_4 = 6.639[5] | r-i = | v-r = | b-v = +0.64[8] | u-b = | variable = }}{{Starbox astrometry | radial_v = | prop_mo_ra = 113.90[1] | prop_mo_dec = 90.05[1] | parallax = 14.41 | p_error = 0.50 | parallax_footnote = [1] | absmag_v = 3.89 ± 0.08[8] }}{{Starbox detail | source = [8] | mass = 1.14 ± 0.12 | radius = | gravity = 4.45 ± 0.03 | luminosity = 2.23 ± 0.16 | temperature = 6010 ± 30 | metal = +0.30 ± 0.02 | age_gyr = 2.9 ± 0.4 | rotation = 20.6 ± 6.9 d | rotational_velocity = }}{{Starbox catalog | names = BD+51° 2782, HIP 99306, SAO 32320 }}{{Starbox reference | Simbad = HD+191806 | NSTED = HD+191806 | EPE = HD+191806 }}{{Starbox end}} HD 191806 is an 8th magnitude K-type star located approximately 226 light years away in the constellation Cygnus. In 2016, a massive gas giant planet was found in orbit around the star. {{OrbitboxPlanet begin| table_ref = [8] }}{{OrbitboxPlanet | exoplanet = b | mass = ≥8.52 ± 0.63 | period = 1606.3 ± 7.2 | semimajor = 2.8 ± 0.1 | eccentricity = 0.259 ± 0.017 }}{{Orbitbox end}} See also
References1. ^1 2 3 {{cite journal | title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources | url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?db_key=AST&bibcode=2003yCat.2246....0C | last1=Cutri | first1=R. M. | last2=Skrutskie | first2=M. F. | journal= | volume= | at=| date=2003 | arxiv= | bibcode=2003yCat.2246....0C | doi= }} [1][2][3]2. ^1 2 3 4 5 {{cite journal | title=Validation of the new Hipparcos reduction. | url=http://www.aanda.org/10.1051/0004-6361/20078357 | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | at=| date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} 3. ^1 2 3 4 {{cite journal | title=The SOPHIE search for northern extrasolar planets. XI. Three new companions and an orbit update: Giant planets in the habitable zone | url=http://www.aanda.org/10.1051/0004-6361/201628331 | last1=Daiz | first1=R. F. | last2=Rey | first2=J. | last3=Demangeon | first3=O. | last4=Hébrard | first4=G. | last5=Boisse| first5=I. | last6=Arnold | first6=L. | last7=Astudillo-Defru | first7=N. | last8=Beuzit | first8=J. -L. | last9=Bonfils | first9=X. | display-authors=2 | journal=Astronomy and Astrophysics | volume=591 | at=A146| date=2013 | arxiv=1604.07610 | bibcode=2016A&A...591A.146D | doi=10.1051/0004-6361/201628331 }} }}{{Sky|20|11|30.7166|-|64|37|13.694|330}}{{Stars of Cygnus}}{{main-star-stub}}{{extrasolar-planet-stub}} 6 : K-type main-sequence stars|Henry Draper Catalogue objects|Hipparcos objects|Durchmusterung objects|Cygnus (constellation)|Planetary systems |
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