| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 05m 03.38423s[1] |
| Declination | +42° 58′ 53.8846″[1] |
| Apparent magnitude (V) | 5.90[2] |
| Characteristics | |
| Spectral type | F1 V[2] |
| B−Vcolor index | 0.358±0.005[2] |
| Astrometry | |
| Radial velocity (Rv) | +34.1±2.9[3] km/s |
| Proper motion (μ) | RA: −45.17[1]mas/yr Dec.: −144.26[1]mas/yr |
| Parallax (π) | 20.11±0.40 mas[1] |
| Distance | 162 ± 3 ly (49.7 ± 1.0 pc) |
| Absolute magnitude (MV) | 2.45[4] |
| Details | |
| Mass | 1.45[5] M☉ |
| Luminosity | 9.36[2] L☉ |
| Surface gravity (log g) | 4.14±0.14[5] cgs |
| Temperature | 7,161±243[5] K |
| Metallicity [Fe/H] | −0.03±0.15[2] dex |
| Rotational velocity (v sin i) | 87.8±4.4[4] km/s |
| Age | 603[5] Myr |
| Other designations | |
| 39 Aur,BD+42° 1477,HD 41074,HIP 28823,HR 2132,SAO 40840[6] | |
| Database references | |
| SIMBAD | data |
39 Aurigae is a single[7]star in theconstellation ofAuriga. Thedesignation is from the star catalogue of English astronomerJohn Flamsteed, first published in 1712. The star is just barely visible to the naked eye, having anapparent visual magnitude of 5.90.[2] Based upon an annualparallax shift of 20.11[1] mas as seen from Earth, it is located 112 light years away. 5 Andromedae is moving further from the Sun with aradial velocity of +34 km/s.[3] It has a relatively highproper motion, advancing across thecelestial sphere at the rate of 0.151 arc seconds per year.[8]
This is anF-type main-sequence star with astellar classification of F1 V.[2] It is an estimated 603[5] million years old with a relatively high rate of spin, showing aprojected rotational velocity of around 88 km/s.[4] The star has 1.45[5] times themass of the Sun and it is radiating 9.36[2] times theSun's luminosity from itsphotosphere at aneffective temperature of around 7,161 K.[5]
