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) | Script error: No such module "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] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 2.07[2] |
| Orbit[7] | |
| Period (P) | Script error: No such module "val". yr |
| Semi-major axis (a) | Script error: No such module "val".″ |
| Eccentricity (e) | Script error: No such module "val". |
| Inclination (i) | Script error: No such module "val".° |
| Longitude of the node (Ω) | Script error: No such module "val".° |
| Periastron epoch (T) | Script error: No such module "val". |
| Argument of periastron (ω) (secondary) | Script error: No such module "val".° |
| Details | |
| 5 Aur A | |
| Mass | 1.48[8] or 1.70[7] Template:Solar mass |
| Luminosity | 12.46[2] Template:Solar luminosity |
| Surface gravity (log g) | 4.14[8] cgs |
| Temperature | Script error: No such module "val".[8] K |
| Metallicity [Fe/H] | Script error: No such module "val".[9] dex |
| Age | 2.205[8] Gyr |
| 5 Aur B | |
| Mass | 0.82[7] Template:Solar mass |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[10] | |
| Database references | |
| SIMBAD | data |
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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 Script error: No such module "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 Script error: No such module "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 Script error: No such module "val". from the primary along a position angle of 285°.[3]
References
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- ↑ a b Template:Cite simbad
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