Back Ni Aurigae AST Nu Aurigae BS Ni del Cotxer Catalan Ni Aurigae Spanish نو ارابه‌ران Persian Nu Aurigae French Nu Aurigae ID ぎょしゃ座ニュー星 Japanese Nu Aurigae Dutch Nu Aurigae Portuguese

Nu Aurigae

ν Aurigae
Location of ν Aurigae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 51m 29.36946s[1]
Declination +39° 08′ 54.6861″[1]
Apparent magnitude (V) 3.957[2]
Characteristics
Spectral type G9.5 III Fe1 Ba0.2 + wd[3]
U−B color index +1.084[2]
B−V color index +1.138[2]
R−I color index 0.56
Astrometry
Radial velocity (Rv)+9.92 ± 0.14[4] km/s
Proper motion (μ) RA: +7.958 mas/yr[1]
Dec.: +0.713 mas/yr[1]
Parallax (π)16.1414 ± 0.4427 mas[1]
Distance202 ± 6 ly
(62 ± 2 pc)
Absolute magnitude (MV)−0.27[5]
Details
Mass2.12[6] M☉
Radius17.85+0.51
−0.53[7] R☉
Luminosity126±8[7] L☉
Surface gravity (log g)2.4[4] cgs
Temperature4,576±50[7] K
Metallicity [Fe/H]–0.14[4] dex
Rotational velocity (v sin i)5.0[4] km/s
Age1.11[6] Gyr
Other designations
ν Aur, 32 Aurigae, ADS 4440, BD+39 1429, FK5 221, HD 39003, HIP 27673, HR 2012, SAO 58502.[8]
Database references
SIMBADdata

Nu Aurigae, Latinised from ν Aurigae, is the Bayer designation for a star in the northern constellation of Auriga. It is visible to the naked eye with an apparent visual magnitude of 3.96[2] and is approximately 200 light-years (61 parsecs) distant from the Earth.[1] This is an evolved giant star with a stellar classification of G9.5 III.[9] It is a red clump star, which indicates that it is generating energy through the fusion of helium at its core.[10] The outer envelope has expanded to 18 times the radius of the Sun and cooled to 4,576 K,[7] giving it the characteristic yellow-hued glow of a G-type star.[11] It shines with 126 times the luminosity of the Sun.[7]

This is an astrometric binary with a suspected white dwarf companion.[3] A 10th-magnitude star 54.6 arcseconds away is an optical companion.

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  2. ^ a b c d Cite error: The named reference aaass65_2_405 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference aj135_1_209 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference baines was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference rob51 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference aaa522_A79 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference csiro was invoked but never defined (see the help page).

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