5 Aurigae

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Template:Short description

5 Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.95[2] (6.02 + 9.50)[3]
Characteristics
Spectral type F5 V[4]
U−B Template:Engvar −0.03[5]
B−V Template:Engvar +0.42[5]
Astrometry
Radial velocity (Rv)Template:Val[6] km/s
Proper motion (μ) RA: −10.87[1] mas/yr
Dec.: −1.08[1] mas/yr
Parallax (π)16.74±0.71 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)2.07[2]
Orbit[7]
Period (P)Template:Val yr
Semi-major axis (a)Template:Val″
Eccentricity (e)Template:Val
Inclination (i)Template:Val°
Longitude of the node (Ω)Template:Val°
Periastron epoch (T)Template:Val
Argument of periastron (ω)
(secondary)		Template:Val°
Details
5 Aur A
Mass1.48[8] or 1.70[7] Template:Solar mass
Luminosity12.46[2] Template:Solar luminosity
Surface gravity (log g)4.14[8] cgs
TemperatureTemplate:Val[8] K
Metallicity [Fe/H]Template:Val[9] dex
Age2.205[8] Gyr
5 Aur B
Mass0.82[7] Template:Solar mass
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[10]
Database references
SIMBADdata

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5 Aurigae is a triple star[7] system in the northern constellation of Auriga,[10] located about 195 light years away from the Sun based on parallax.[1] It is just visible to the naked eye as a dim, yellow-white hued star with an apparent visual magnitude of 5.95.[2] The system is moving away from the Earth with a heliocentric radial velocity of +6 km/s,[6] having come within Template:Convert some 8.7 million years ago.[2]

This was initially discovered to be a binary star system by Otto Struve. The outer pair has an orbital period of 1,598 years with an eccentricity of 0.536.[7] The magnitude 6.02[3] primary, component A, is itself a binary system consisting of two stars of similar mass, roughly 1.5 times the mass of the Sun each, with an orbital period of Template:Convert.[11] It has a stellar classification of F5 V,[4] matching an F-type main-sequence star.

As of 2017, component B is a magnitude 9.50 star at an angular separation of Template:Val from the primary along a position angle of 285°.[3]

References

Template:Reflist

External links

Template:Stars of Auriga

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  3. ↑ a b c Script error: No such module "Citation/CS1". Vizier catalog entry
  4. ↑ a b Script error: No such module "Citation/CS1".
  5. ↑ a b Script error: No such module "Citation/CS1".
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  10. ↑ a b Template:Cite simbad
  11. ↑ Script error: No such module "Citation/CS1".
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