{{Short description|Extrasolar planet in the constellation Draco}} {{Notability|ASTRO|date=April 2026}} {{Infobox planet | name = HD 167042 b <!-- DISCOVERY --> | discoverer = Johnson "et al." | discovery_site = [[Lick Observatory]] | discovered = Sept 20, 2007<br />published Oct 22, 2007 | discovery_method = [[doppler spectroscopy|radial velocity]] <!-- DESIGNATIONS --> <!-- ORBITAL --> | apsis = astron | aphelion = {{convert|1.34|AU|km|abbr=on}} | perihelion = {{convert|1.26|AU|km|abbr=on}} | semimajor = {{convert|1.30|AU|km|abbr=on}} | eccentricity = 0.027±0.04 | period = 412.6±4 [[day|d]]<br>1.130 [[year|y]] | avg_speed = 34.4 | time_periastron = 2453330±120 | arg_peri = 34±40 | semi-amplitude = 29.7 | star = [[HD 167042]] <!-- PHYS CHARS --> <!-- ATMOSPHERE --> <!-- NOTES --> }} '''HD 167042 b''' is a [[gas giant]] [[extrasolar planet]] located approximately 163 [[light-year]]s away in the [[constellation]] of [[Draco (constellation)|Draco]], orbiting the [[star]] [[HD 167042]]. The mass 1.7 M<sub>J</sub> is only minimum since the [[inclination]] of the [[orbital plane (astronomy)|orbital plane]] is unknown. As it is typical for most known extrasolar planets, it orbits less than 3 AU from the parent star, hence taking less than 2,000 days (5.5 years) to revolve. For this planet, it orbits at 1.30 AU and taking 413 days to revolve around the star. Unlike most exoplanets, the [[eccentricity (orbit)|eccentricity of the orbit]] is low, only 3%.
This planet was discovered in 2007 on September 20 and published on March 1. This planet was typical as it was discovered spectroscopically using the [[Doppler Spectroscopy|radial velocity]] method.<ref name="Johnson2008"/>
==See also== * [[HD 16175 b]] * [[Kappa Coronae Borealis b]]
==References== {{Reflist|refs=
<ref name="Johnson2008">{{cite journal | title=Retired A Stars and Their Companions. II. Jovian Planets Orbiting κ CrB and HD 167042 | last1=Johnson | first1=John Asher | last2=Marcy | first2=Geoffrey W. | last3=Fischer | first3=Debra A. | last4=Wright | first4=Jason T. | last5=Reffert | first5=Sabine | last6=Kregenow | first6=Julia M. | last7=Williams | first7=Peter K. G. | last8=Peek | first8=Kathryn M. G. | display-authors=1 | journal=The Astrophysical Journal | year=2008 | volume=675 | issue=1 | pages=784–789 | arxiv=0711.4367 | bibcode=2008ApJ...675..784J | doi=10.1086/526453 | s2cid=12367629 }}</ref>
}}
==External links== * {{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+167042 | title=HD 167042 | work=Exoplanets | access-date=2008-08-24 | archive-url=https://web.archive.org/web/20091125001452/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+167042 | archive-date=2009-11-25 | url-status=dead }}
{{Stars of Draco}} {{Sky|18|10|31.6403|+|54|17|11.588|163}}
{{DEFAULTSORT:HD 167042 b}} [[Category:Draco (constellation)]] [[Category:Giant planets]] [[Category:Exoplanets discovered in 2007]] [[Category:Exoplanets detected by radial velocity]]
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