66 Aurigae

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Template:Short description

66 Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.23[2]
Characteristics
Evolutionary stage horizontal branch[3]
Spectral type K0.5 IIIa[4]
B−V Template:Engvar Script error: No such module "val".[2]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[1] km/s
Proper motion (μ) RA: −3.511[1] mas/yr
Dec.: −20.935[1] mas/yr
Parallax (π)3.7070±0.1684 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−2.58[2]
Details
Mass5.05[3] Template:Solar mass
RadiusScript error: No such module "val".[1] Template:Solar radius
LuminosityScript error: No such module "val".[1] Template:Solar luminosity
TemperatureScript error: No such module "val".[1] K
Metallicity [Fe/H]Script error: No such module "val".[2] dex
Rotational velocity (v sin i)4.5[5] km/s
Age107[3] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[6]
Database references
SIMBADdata

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66 Aurigae is a single[7] star located approximately 880 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a faint, orange hued star with an apparent magnitude of 5.23.[2] This object is moving further from the Earth with a heliocentric radial velocity of +22.6 km/s.[1]

At the age of 107 million years,[3] 66 Aurigae is an evolved giant star, most likely (98% chance) on the horizontal branch,[3] with a stellar classification of K0.5 IIIa.[4] Keenan and Yorka (1987) identified it as a strong–CN star, showing an excess strength of the blue CN bands in the spectrum.[8] Having exhausted the supply of hydrogen at its core, the star has expanded to 48[1] times the Sun's radius. 66 Aurigae has five[3] times the mass of the Sun and is radiating 834[1] times the Sun's luminosity from its swollen photosphere at an effective temperature of 4,475 K.[1]

It was also known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).

References

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External links

Template:Stars of Auriga