Английская Википедия:HD 72659

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HD 72659 is a star in the equatorial constellation of Hydra. With an apparent visual magnitude of 7.46,[1] his yellow-hued star is too faint to be viewed with the naked eye. Parallax measurements provide a distance estimate of 169.4 light years from the Sun, and it has an absolute magnitude of 3.98.[1] The star is drifting closer with a radial velocity of −18.3 km/s.[2]

This is a Sun-like main sequence star with a stellar classification of G2V,[3] indicating that it is generating energy through core hydrogen fusion. It is older than the Sun with an age of about seven billion years,[4] and is spinning with a projected rotational velocity of 5.1 km/s.[5] The star has 7% greater mass than the Sun and a 38% larger radius. It is radiating more than double the Sun's luminosity from its photosphere at an effective temperature of 5,956 K.[4] The metallicity of the stellar atmosphere is similar to the Sun.[1]

Planetary system

An extrasolar planet was discovered orbiting this star in 2003 via the Doppler method.[6] This is a superjovian planet with an eccentric orbit, completing a lap around its host star every Шаблон:Convert.[7] In 2022, the inclination and true mass of HD 72659 b were measured via astrometry, along with the detection of a second substellar companion, likely a brown dwarf.[8]

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See also

References

Шаблон:Reflist

External links

Шаблон:Sky

Шаблон:Stars of Hydra

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