Nu Aurigae

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Template:Short description

ν Aurigae
Template:Location mark
Location of ν Aurigae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 3.957[3]
Characteristics
Evolutionary stage red clump[4]
Spectral type G9.5 III Fe1 Ba0.2 + wd[5]
U−B Template:Engvar +1.084[3]
B−V Template:Engvar +1.138[3]
R−I Template:Engvar 0.56
Astrometry
Radial velocity (Rv)+9.92±0.14[6] km/s
Proper motion (μ) RA: +7.958 mas/yr[2]
Dec.: +0.713 mas/yr[2]
Parallax (π)16.1414±0.4427 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−0.27[1]
Details
Mass2.12[7] Template:Solar mass
RadiusScript error: No such module "val".[8] Template:Solar radius
LuminosityScript error: No such module "val".[8] Template:Solar luminosity
Surface gravity (log g)2.4[6] cgs
TemperatureScript error: No such module "val".[8] K
Metallicity [Fe/H]−0.14[6] dex
Rotational velocity (v sin i)5.0[6] km/s
Age1.11[7] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[9]
Database references
SIMBADdata

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Nu Aurigae is a star in the northern constellation of Auriga. Its name is a Bayer designation that is Latinised from ν Aurigae, and abbreviated Nu Aur or ν Aur. This star is visible to the naked eye with an apparent visual magnitude of 3.96.[3] Based on parallax measurements, it is approximately Script error: No such module "convert". distant from the Earth.[2] The star is drifting further away from the Sun with a radial velocity of +10 km/s.[6]

This is an evolved giant star with a stellar classification of G9.5 III.[10] At 1.1 billion years of age,[7] it is a red clump star that is generating energy through the fusion of helium at its core.[4] Its outer envelope has expanded to 18 times the radius of the Sun and cooled to Script error: No such module "val".,[8] giving it the characteristic yellow-hued glow of a G-type star.[11] It shines with 126 times the luminosity of the Sun[8] and has 2.12 times the Sun's mass.[7]

This is an astrometric binary with a suspected white dwarf companion.[5] Radial velocity variations suggest an orbital period of Template:Cvt with a large eccentricity of 0.71.[12] A 10th-magnitude star 54.6 arcseconds away is an optical companion.

See also

References

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  1. ↑ a b Template:Cite XHIP
  2. ↑ a b c d e Template:Cite DR3
  3. ↑ a b c d Script error: No such module "citation/CS1".
  4. ↑ a b Script error: No such module "citation/CS1".Script error: No such module "Unsubst".
  5. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ a b c d e Script error: No such module "citation/CS1".
  7. ↑ a b c d Script error: No such module "citation/CS1".
  8. ↑ a b c d e Script error: No such module "citation/CS1".
  9. ↑ Template:Cite simbad
  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Script error: No such module "citation/CS1".
  12. ↑ Script error: No such module "citation/CS1".

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External links

Template:Stars of Auriga Template:Sky

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