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⚫ #REDIRECT ]
{{Planetbox begin
| name = ] Bb
}}
{{Planetbox star
⚫ | star = ]
| constell = ]
| ra = {{RA|02|36|57.74}}<ref name="van Leeuwen2007"/>
| dec = {{DEC|+24|38|53.0}}<ref name="van Leeuwen2007"/>
| app_mag = 7.09
| dist_ly = 133 ± 3<ref name="van Leeuwen2007"/>
| dist_pc = 41 ± 1<ref name="van Leeuwen2007"/>
| class = F6V
| mass = 1.13 ± 0.08
| radius = 1.13 ± 0.13
| temperature = 6424 ± 180
| metallicity = 0.07 ± 0.2
| age = 0.91 ± 0.03
}}
{{Planetbox orbit
| semimajor = 0.995 ± 0.012
| semimajor_gm = 148.9 ± 1.8
| periastron = 0.708
| periastron_gm = 105.9
| apastron = 1.283
| apastron_gm = 191.9
| eccentricity = 0.289 ± 0.092
| period = 335.1 ± 2.5
| period_year = 0.917 ± 0.007
| speed = 32.3
| arg_peri = 307 ± 18
| t_peri = 2454538 ± 20
| semi-amp = 270
}}
{{Planetbox character
| minimum_mass = 9.88 ± 0.94
| temperature = 300
}}
{{Planetbox discovery
| discovery_date = November 27, 2009
| discoverers = Guenther ''et al.''
| discovery_method = ]
| discovery_site = ]
| discovery_status = Published
}}
{{Planetbox reference
| star = 30+Ari+B
| planet = b
}}
{{Planetbox end}}


⚫ ]
'''30 Arietis Bb''' (sometimes abbreviated '''30 Ari Bb''') is an ] which orbits the ] ] ] ], located in a quadruple star system approximately 129 ]s away in the ] ]. This planet has ] nearly 10 times that of ]. Because ] is not known, its ] is unknown. Meanwhile, this planet orbits only 0.005 AU (or 700,000&nbsp;km) closer to the star than ] to the Sun, but its ] is much higher compared to Earth. At ], the planet’s closest distance to the star is 0.708 AU, which is slightly closer to the star than ] to the Sun. At ], the planet’s farthest distance to the star is 1.283 AU, which is more than half-way between the orbits of Earth and ].<ref name="Guenther2009"/>
]

This ] planet was discovered on Friday, November 27, 2009 by using precise ] from ] installed in ] in ].

== References ==
{{Reflist|colwidth=30em|refs=

<ref name="Guenther2009">{{cite journal | title=A substellar component orbiting the F-star 30 Arietis B | url=http://www.aanda.org/articles/aa/full_html/2009/45/aa12112-09/aa12112-09.html | last1=Guenther | first1=E. W. | last2=Hartmann | first2=M. | last3=Esposito | first3=M. | last4=Hatzes | first4=A. P. | last5=Cusano | first5=F. | last6=Gandolfi | first6=D. | display-authors=1 | journal=Astronomy and Astrophysics | volume=507 | issue=3 | pages=1659–1665 | year=2009 | arxiv=0912.4619 | bibcode=2009A&A...507.1659G | doi=10.1051/0004-6361/200912112 }}</ref>

<ref name="van Leeuwen2007">{{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 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} </ref>

}}
* {{cite web |url=http://exoplanet.eu/planet.php?p1=30+Ari+B&p2=b |title=Notes for Planet 30 Ari B b |author=Jean Schneider |year=2011 |work= |publisher=] |accessdate=3 October 2011}}

{{Sky|02|36|57.7405|+|24|38|53.027|128.6}}

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