| 词条 | HD 205739 |
| 释义 |
| name = HD 205739 }}{{Starbox observe | epoch = J2000.0 | constell = Piscis Austrinus | ra = {{RA|21|38|08.404}}[1] | dec = {{DEC|-31|44|14.96}} [1] | appmag_v = 8.56 }}{{Starbox character | class = F7 V | r-i = | v-r = | b-v = 0.546 | u-b = | variable = }}{{Starbox astrometry | radial_v = 9.1 | prop_mo_ra = 20.94 ± 0.90[1] | prop_mo_dec = -83.69 ± 0.53[1] | parallax = 9.28 | p_error = 0.84 | parallax_footnote = [1] | absmag_v = 3.78 }}{{Starbox detail | age = 2.84 Gyr | metal = +0.19 ± 0.04 | mass = 1.22 | radius = 1.33 | rotation = | luminosity = 2.3 | temperature = 6176 ± 45 }}{{Starbox catalog | names = {{odlist|HIP=106824|PPM=301636|SAO=213152|CD=-32° 16667}} }}{{Starbox reference | Simbad = HD+205739 | ARICNS = | EPE = HD+205739 }}{{Starbox end}}HD 205739 is a yellow-white dwarf (spectral type F7 V). It is about 108 parsecs away from the Sun.[1] A Jupiter-like planet has recently been detected in a Mercury-like eccentric orbit around this star. There is a trend in the results which may point to an additional companion further from its star. {{OrbitboxPlanet begin| table_ref = }}{{OrbitboxPlanet | exoplanet = b | mass = >1.37 | period = 279.8 ± 0.1 | semimajor = 0.896 | eccentricity = 0.27 ± 0.07 }}{{Orbitbox end}} See also
References1. ^1 2 3 4 5 6 {{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} Vizier catalog entry [1]}}
6 : Piscis Austrinus|Durchmusterung objects|Henry Draper Catalogue objects|Hipparcos objects|Planetary systems|F-type main-sequence stars |
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