Nu Aurigae
 Location of ν Aurigae (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 51m 29.40040s[1] |
| Declination | +39° 08′ 54.5428″[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: +8.48[1] mas/yr Dec.: +0.39[1] mas/yr |
| Parallax (π) | 15.17 ± 0.88[1] mas |
| Distance | 220 ± 10 ly (66 ± 4 pc) |
| Details | |
| Radius | 19[4] R☉ |
| Luminosity | 135[4] L☉ |
| Surface gravity (log g) | 2.4[4] cgs |
| Temperature | 4,571[4] K |
| Metallicity [Fe/H] | –0.14[4] dex |
| Rotational velocity (v sin i) | 5.0[4] km/s |
| Other designations | |
Nu Aurigae (ν Aur, 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 220 light-years (67 parsecs) distant from the Earth. This is an evolved giant star with a stellar classification of G9.5 III.[6] It is a red clump star, which indicates that it is generating energy through the fusion of helium at its core.[7] The outer envelope has expanded to 19 times the radius of the Sun and cooled to 4,571 K,[4] giving it the characteristic yellow-hued glow of a G-type star. It shines with 135 times the luminosity of the Sun.[4]
This is an astrometric binary with a suspected white dwarf companion.[3] A 10th magnitude star 54.6 arcseconds away is an optical companion.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found. Note: see VizieR catalogue I/311.
- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
