Eccentric Jupiter
The celestial bodies that revolve around 16 Cygni and 70 Virginis with orbital eccentricities greater than 0.5 were initially regarded as brown dwarfs, prior to more accurate measurements of their masses.[citation needed] Various theories about the origin of orbits with high eccentricity compared to the planets of the solar system have been proposed, and can be modeled and analyzed via computer simulation.For instance, an eccentric Jupiter may have an elongated elliptical orbit with periapsis around 0.05 au, and experience tidal braking upon its closest approach to its star.In addition, hot Jupiters have been found at slightly more distant orbits – with semi-major axes of at least 0.1 au – but another model is needed to explain these.However, such a distorted waveform can also occur due to the synthesis of radial velocity fluctuations (wave interference) caused by multiple planets.
HD 80606 bJovian planeteccentricplanetary systemEarth-like planetsgas giantEarth massexoplanetshabitable zoneMercuryhot Jupitersmain sequence star51 Pegasi16 Cygni70 VirginisHD 96167 bcomputer simulationprotoplanetary disksstar systemgravitycompanion starsemi-major axesperiapsisradiant fluxDoppler spectroscopysine curvewave interferencemultiplanetary system54 Piscium bHD 37605 bHD 45350 bHD 20782 bHD 89744 b16 Cygni BbHR 5183 bIcarusBibcodeThe Astronomical JournalJohnson, John AsherFischer, Debra A.Publications of the Astronomical Society of the PacificThe Astrophysical JournalNatureMonthly Notices of the Royal Astronomical SocietyThe Astrophysical Journal Supplement SeriesPlanetDefinitionPlanetary scienceExoplanetExoplanet orbital and physical parametersMethods of detecting exoplanetsPlanet-hosting starsTerrestrialCarbon planetCoreless planetDesert planetDwarf planetHycean planetIce planetIron planetLava planetOcean worldMega-EarthSub-EarthSuper-EarthGaseousMini-NeptuneHelium planetHot JupiterHot NeptuneIce giantSuper-JupiterSuper-NeptuneSuper-puffUltra-hot JupiterUltra-hot NeptuneBlanetBrown dwarfChthonian planetCircumbinary planetCircumtriple planetDisrupted planetDouble planetEcumenopolisEyeball planetGiant planetMesoplanetPlanemoPlanetesimalProtoplanetPulsar planetSub-brown dwarfSub-NeptuneToroidal planetUltra-cool dwarfUltra-short period planet (USP)Formation and evolutionAccretionAccretion diskAsteroid beltCircumplanetary diskCircumstellar discCircumstellar envelopeCosmic dustDebris diskDetached objectExozodiacal dustExtraterrestrial materialsExtraterrestrial sample curationGiant-impact hypothesisGravitational collapseHills cloudInternal structureInterplanetary dust cloudInterplanetary mediumInterplanetary spaceInterstellar cloudInterstellar dustInterstellar mediumKuiper beltList of interstellar and circumstellar moleculesMolecular cloudNebular hypothesisOort cloudOuter spacePlanetary migration