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| {{Infobox planet | |||
| | name = ] Bb | |||
| | symbol = | |||
| | image = | |||
| | image_size = | |||
| | image_alt = | |||
| | caption = | |||
| | background = | |||
| | bgcolour = | |||
| | label_width = | |||
| <!-- DISCOVERY --> | |||
| | discoverer = Guenther ''et al.'' | |||
| | discovery_site = ] | |||
| | discovered = November 27, 2009 | |||
| | discovery_method = ] | |||
| | discovery_ref = | |||
| <!-- DESIGNATIONS --> | |||
| | exosolar planets = | |||
| | minorplanet = | |||
| | extrasolarplanet = | |||
| | mpc_name = | |||
| | pronounced = | |||
| | named_after = | |||
| | alt_names = | |||
| | mp_category = | |||
| | adjectives = | |||
| <!-- ORBITAL --> | |||
| | orbit_ref = | |||
| | orbit_diagram = | |||
| | epoch = | |||
| | uncertainty = | |||
| | observation_arc = | |||
| | earliest_precovery_date = | |||
| | apsis = astron | |||
| | aphelion = | |||
| | perihelion = | |||
| | semimajor = {{convert|0.995 ± 0.012|AU|km|abbr=on}} | |||
| | mean_orbit_radius = | |||
| | eccentricity = 0.289 ± 0.092 | |||
| | period = 335.1 ± 2.5 ]<br>0.917 ± 0.007 ] | |||
| | synodic_period = | |||
| | avg_speed = 32.3 | |||
| | mean_anomaly = | |||
| | mean_motion = | |||
| | inclination = | |||
| | angular_dist = | |||
| | asc_node = | |||
| | long_periastron = | |||
| | time_periastron = 2454538 ± 20 | |||
| | arg_peri = 307 ± 18 | |||
| | semi-amplitude = 270 | |||
| | satellite_of = | |||
| | satellites = | |||
| | star = | |||
| | allsatellites = | |||
| | tisserand = | |||
| <!-- PHYS CHARS --> | |||
| | physical_ref = | |||
| | dimensions = | |||
| | mean_diameter = | |||
| | mean_radius = | |||
| | equatorial_radius = | |||
| | polar_radius = | |||
| | flattening = | |||
| | circumference = | |||
| | surface_area = | |||
| | volume = | |||
| | mass = | |||
| | density = | |||
| | surface_grav = | |||
| | moment_of_inertia_factor = | |||
| | escape_velocity = | |||
| | rotation = | |||
| | sidereal_day = | |||
| | rot_velocity = | |||
| | axial_tilt = | |||
| | right_asc_north_pole = | |||
| | declination = | |||
| | pole_ecliptic_lat = | |||
| | pole_ecliptic_lon = | |||
| | albedo = | |||
| | single_temperature = 300 | |||
| | spectral_type = | |||
| | magnitude = | |||
| | abs_magnitude = | |||
| | angular_size = | |||
| | family = | |||
| <!-- ATMOSPHERE --> | |||
| | atmosphere_ref = | |||
| | atmosphere = | |||
| | scale_height = | |||
| | surface_pressure = | |||
| | atmosphere_composition = | |||
| <!-- NOTES --> | |||
| | note = | |||
| }} | |||
| '''30 Arietis Bb''' (sometimes abbreviated '''30 Ari Bb''') is an ] which orbits the ] ] ] ], located in a quadruple star system approximately 146 ]s away in the ] ]. The ] planet was discovered by on Friday, November 27, 2009 by using precise ] from ] installed in ] in ].<ref name="Guenther2009">{{cite journal |last=Guenther |first=E. W. |display-authors=etal |date=2009 |url=http://www.aanda.org/articles/aa/full_html/2009/45/aa12112-09/aa12112-09.html |title=A substellar component orbiting the F-star 30 Arietis B |journal=Astronomy and Astrophysics|volume=507 |issue=3 |pages=1659–1665 |arxiv=0912.4619 |bibcode=2009A&A...507.1659G |doi=10.1051/0004-6361/200912112}}</ref> | |||
| ] | |||
| ==Overview== | |||
| ] | |||
| The exoplanet 30 Arietis Bb has a ] of nearly 10 times that of ].<ref>{{Cite web|url=https://exoplanets.nasa.gov/newworldsatlas/5479|title=30 Ari B b {{!}} New World Atlas - Exoplanet Exploration: Planets Beyond our Solar System|website=Exoplanet Exploration: Planets Beyond our Solar System|access-date=2018-07-30}}</ref> Because ] is not identified, its ] is unknown. Meanwhile, this planet orbits only 0.995 AU (or 700,000 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 halfway between the orbits of Earth and ].<ref name="Guenther2009" /> | |||
| ==References== | |||
| {{Reflist}} | |||
| * {{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 |website= |publisher=] |accessdate=3 October 2011}} | |||
| {{Sky|02|36|57.7405|+|24|38|53.027|128.6}} | |||
| ] | |||
| ] | |||
| ] | |||
| ] | |||
| ] | |||
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