Английская Википедия:46 Boötis

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Шаблон:Short description Шаблон:About-distinguish Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox orbit Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end

46 Boötis is a binary star system in the northern constellation of Boötes, located mid-way between α Coronae Borealis and ε Boötis.[1] It has the Bayer designation b Boötis; 46 Boötis is the Flamsteed designation.[2] The system lies 478 light-years away from the Sun based on parallax,[3] and is visible to the naked eye as a faint, orange-hued star with a combined apparent visual magnitude of 5.67.[4] It is moving away from the Earth with a heliocentric radial velocity of +19 km/s.[4] The light from this system displays an unusually high level of polarization due to interstellar dust.[1]

This is a single-lined spectroscopic binary with an orbital period of Шаблон:Convert and a large eccentricity of 0.83.[1] The primary member, designated component A, is an aging giant star with a stellar classification of K2 III.[5] As a consequence of exhausting the hydrogen at its core, it has expanded to 23[3] times the Sun's radius. It is radiating 176[3] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of Шаблон:Val.[3] The companion star, component B, is most likely a lower main-sequence star with 0.6–0.8 times the Sun's mass.[6]

References

Шаблон:Reflist

External links

Шаблон:Stars of Boötes

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