Kepler-1704b is a
super-Jupiter
A super-Jupiter is a gas giant exoplanet that is more massive than the planet Jupiter. For example, companions at the planet–brown dwarf borderline have been called super-Jupiters, such as around the star Kappa Andromedae.
By 2011 there were ...
on a highly
eccentric orbit
In astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around another body deviates from a perfect circle. A value of 0 is a circular orbit, values betw ...
around the star Kepler-1704. It has a mass of 4.51 . The planet's distance from its star varies from 0.16 to 3.9
AU. It is a failed
hot Jupiter
Hot Jupiters (sometimes called hot Saturns) are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital periods (). The close proximity to their stars and high surface-atmosphere tem ...
, been scattered from its birth orbit to orbit with periastron just above tidal circularization distance.
Characteristics
Kepler-1704b is much more massive than Jupiter, at 4.51 M''
J.''
The high planetary mass makes Kepler-1704b a super-Jupiter. Kepler-1704b goes on a highly eccentric 2.7 year-long (988.88 days) orbit around its star as well as
transiting.
The extreme eccentricity yields a temperature difference of up to 700 K.
Star
The star, Kepler-1704, is a G2, 5745-kelvin star from Earth and the sun. It has a mass of , a radius of , and a luminosity of . The high radius for the star's mass hints that Kepler-1704 is not a
main-sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar He ...
star.
See also
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Gas giant
A gas giant is a giant planet composed mainly of hydrogen and helium. Gas giants are also called failed stars because they contain the same basic elements as a star. Jupiter and Saturn are the gas giants of the Solar System. The term "gas giant" ...
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List of planet types
The following is a list of planet types by their mass, orbit, physical and chemical composition, or by another classification.
The IAU defines that a ''planet'' in the Solar System must orbit around the Sun, has enough mass to assume hydrostat ...
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Kepler-419b
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HD 80606 b
HD 80606 b (also Struve 1341 B b or HIP 45982 b) is an eccentric and hot Jupiter 190 light-years from the Sun in the constellation of Ursa Major. HD 80606 b was discovered orbiting the star HD 80606 in April 2001 by a team led by Michel Mayor an ...
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HR 5183 b
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HD 20782 b
References
Exoplanets discovered in 2021
Giant planets
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