Epsilon Eridani b
Gas giant orbiting Epsilon Eridani / From Wikipedia, the free encyclopedia
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Epsilon Eridani b, also known as AEgir [sic],[4] is an exoplanet approximately 10.5 light-years away orbiting the star Epsilon Eridani, in the constellation of Eridanus (the River). The planet was discovered in 2000, and as of 2023 remains the only confirmed planet in its planetary system. It orbits at around 3.5 AU with a period of around 7.6 years, and has a mass around 0.6 times that of Jupiter.[5] As of 2023[update], both the Extrasolar Planets Encyclopaedia and the NASA Exoplanet Archive list the planet as 'confirmed'.[6][7]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | Hatzes et al. |
Discovery site | United States |
Discovery date | 7 August 2000 |
Doppler spectroscopy | |
Orbital characteristics[2] | |
3.53±0.06 AU | |
Eccentricity | 0.26±0.04 |
2,688.60+16.17 −16.51 d 7.36+0.04 −0.05 yr | |
Inclination | 130.60°+9.53° −12.62° |
206.07°+15.14° −17.48° | |
2444411.54+76.60 −81.95 JD | |
166.48°+6.63° −6.66° | |
Semi-amplitude | 9.98+0.43 −0.38 m/s |
Star | Epsilon Eridani |
Physical characteristics | |
Mass | 0.76+0.14 −0.11 MJ[2] |
Temperature | ~150 K (−123 °C; −190 °F)[3] |
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