Английская Википедия:HD 210056

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HD 210056, also known as HR 8432, is a solitary orange hued star located in the southern circumpolar constellation Octans. Eggen (1993) listed it as a member of the old disk population.[1]

The object has an apparent magnitude of 6.13,[2] making it barely visible to the naked eye. Based on parallax measurements from the Gaia satellite, the object is estimated to be 292 light years distant.[3] It appears to be receding with a heliocentric radial velocity of Шаблон:Val.[4] At its current distance, HD 210056's brightness is diminished by 0.2 magnitudes due to interstellar dust. It has an absolute magnitude of +1.41.[5]

This is an evolved giant star with a stellar classification of K0 III. It has 1.59 times the mass of the Sun but has expanded to 7.72 times its girth.[6] It radiates 29.7 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of Шаблон:Val.[6] Based on asteroseismologic measurements, HD 210056 is estimated to be 2 billion years old.[7] The star has about 90% of the Sun's metallicity — what astronomers define a star's abundance of chemical elements heavier than helium.[6] It currently spins slowly with a projected rotational velocity lower than Шаблон:Val.[7]

References

Шаблон:Reflist Шаблон:Stars of Octans

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