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Epsilon Indi Ab is a gas giant exoplanet orbiting the star Epsilon Indi A, about 11.9 light-years away in the constellation of Indus. The planet was confirmed to exist in 2018. [ 1 ] It orbits at around 30 AU (almost as far as Neptune from the Sun) with a period of around 180 years and a relatively high eccentricity of 0.4, and has a mass ...
ε Indi A has one known planet, ε Indi Ab, with a mass of 6.31 Jupiter masses in an elliptical orbit with a period of about 171.3 years. ε Indi Ab is the second-closest Jovian exoplanet, after ε Eridani b. The ε Indi system provides a benchmark case for the study of the formation of gas giants and brown dwarfs. [11]
The coldest and oldest planet directly imaged is Epsilon Indi Ab, which has six times Jupiter's mass, an effective temperature of 275 K, and an age of about 3.5 Ga. This list includes the four members of the multi-planet system that orbit HR 8799 .
Epsilon Indi Ab: Epsilon Indi: 12.05 light-years COCONUTS-2b at 35.5 light-years is the next closest directly visible. [1] Proxima Centauri c (confirmed in 2020 using archival Hubble data from 1995+) may have been directly imaged. [8] Star with the brightest apparent magnitude with a planet Alpha Arietis b: Hamal [1] [a] Apparent magnitude is 2.005
1.01 ± 0.06 5428 ± 80 [6] Epsilon Indi Ab: 3.25 16510 11.55 64.25 radial vel. 11.87 0.75 [7] G 9-40 b: 0.1807 5.746007 0.0385 ... HD 85628 Ab: 1.675 ...
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Epsilon Indi Ab, 12 light-years away, with its parent star Epsilon Indi A blacked out, as pictured by JWST in 2023. [1] Distribution of nearest known exoplanets as of March 2018 There are 7,026 known exoplanets , or planets outside the Solar System that orbit a star, as of July 24, 2024; only a small fraction of these are located in the ...