Английская Википедия:HD 122430

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Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:End

HD 122430 is single star[1] in the equatorial constellation of Hydra. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of 5.47.[2] The star is located at a distance of 105.6 light years from the Sun based on parallax.

This is an aging giant star with a stellar classification of K2–3III.[3] It has completely run out of the hydrogen fuel that keeps it stable, although it is only two billion years old,[4] younger than the Sun's 4.6 billion years. HD 122430 has a mass of 1.6 times and radius of 22.9 times that of the Sun.[4] Despite its younger age, it has slightly lower metallicity, approximately 90%. It is radiating 190[5] times the luminosity of the Sun from its photosphere at an effective temperature of 4300 K.[4]

A candidate exoplanet was reported orbiting the star via the radial velocity method at a conference in 2003, and designated HD 122430 b. It has an orbital period of Шаблон:Convert and an eccentricity of 0.68.[6] However, a follow-up study by Soto et al. (2015) failed to detect a signal, so it remains unconfirmed.[7]

Шаблон:OrbitboxPlanet begin Шаблон:OrbitboxPlanet hypothetical Шаблон:Orbitbox end

See also

References

Шаблон:Reflist

Шаблон:Sky Шаблон:Stars of Hydra

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