Английская Википедия:Alpha Monocerotis

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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 Alpha Monocerotis, Latinised from α Monocerotis, is the Bayer designation for the brightest star in the equatorial constellation of Monoceros. It can be viewed with the naked eye, having an apparent visual magnitude of 3.94.[1] Based upon an annual parallax shift of 22.07 mas as seen from Earth,[2] it is located 148 light-years away from the Sun. The star is moving away from the Sun with a radial velocity of +10.5 km/s.[1]

The stellar classification of Шаблон:Nowrap[3] indicates this is an evolved giant star of type G, which means the hydrogen has been depleted at its core and the outer envelope has expanded and cooled. The 'Fe−0.5' notation indicates the spectrum displays a slight underabundance of iron relative to other stars of this temperature. It is a red clump giant, which means it is generating energy through helium fusion at its core.[4] At the age of 1.18 billion years, this yellow-hued star has an estimated two times the mass of the Sun and 10 times the Sun's radius.[5] It is spinning sedately with a rotation period of about 326 days.[6]

References

Шаблон:Reflist

External links

Шаблон:Stars of Monoceros

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