Английская Википедия:54 Arietis

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

54 Arietis is a star in the northern zodiac constellation of Aries. 54 Arietis is the Flamsteed designation. It is a challenge to view with the naked eye even under good viewing conditions, having an apparent visual magnitude of 6.27.[1] Based upon an annual parallax shift of Шаблон:Val, it is located approximately Шаблон:Convert distant from Earth, and it is drifting further away with a radial velocity of +44 km/s.[2] The brightness of the star is diminished by 0.15[3] in magnitude from extinction caused by interstellar gas and dust. The star is positioned near the ecliptic and thus is subject to lunar occultations.[4]

This is an aging red giant star with a stellar classification of M0 III[5] that is currently evolving along the asymptotic giant branch.[6] Having exhausted the supply of hydrogen at its core, the star has expanded to 41[2] times the Sun's radius. It varies slightly in brightness, with a periodicity of 6.2 days and an amplitude change of 0.0096 in magnitude.[5] On average it is radiating 387[2] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,013 K.[2]

References

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External links

Шаблон:Stars of Aries

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