47 Aurigae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.88[2] |
| Characteristics | |
| Evolutionary stage | giant |
| Spectral type | K4 III[3] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: −7.582[1] mas/yr Dec.: +7.854[1] mas/yr |
| Parallax (π) | 4.7747±0.0978 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.47[2] |
| Details | |
| Mass | Script error: No such module "val".[4] Template:Solar mass |
| Radius | Script error: No such module "val".[1] Template:Solar radius |
| Luminosity | Script error: No such module "val".[1] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[4] cgs |
| Temperature | Script error: No such module "val".[4] K |
| Metallicity [Fe/H] | Script error: No such module "val".[5] dex |
| Age | Script error: No such module "val".[4] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[6] | |
| Database references | |
| SIMBAD | data |
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47 Aurigae is a star located around 680 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.88.[2] This object is moving closer to the Earth with a heliocentric radial velocity of −48 km/s, and is expected to come to within Script error: No such module "convert". in around 3.6 million years.[2]
This object is an aging giant star with a stellar classification of K4 III,[3] having exhausted the hydrogen supply at its core then expanded to 36[1] times the Sun's radius. It is roughly two[4] billion years old with 1.4[4] times the mass of the Sun. The star is radiating 358[1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,157 K.[4]
References
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