Phi Aurigae
From Infogalactic: the planetary knowledge core
 The location of φ Aurigae (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 27m 38.88605s[1] |
| Declination | +34° 28′ 33.2123″[1] |
| Apparent magnitude (V) | 5.089[2] |
| Characteristics | |
| Spectral type | K3 IIIp[3] |
| U−B color index | +1.649[2] |
| B−V color index | +1.411[2] |
| R−I color index | 0.47 |
| Astrometry | |
| Radial velocity (Rv) | +30.78[4] km/s |
| Proper motion (μ) | RA: –1.89[1] mas/yr Dec.: –38.74[1] mas/yr |
| Parallax (π) | 7.20 ± 0.60[1] mas |
| Distance | 450 ± 40 ly (140 ± 10 pc) |
| Details | |
| Radius | 16[5] R☉ |
| Surface gravity (log g) | 1.75[3] cgs |
| Temperature | 4,367[3] K |
| Metallicity [Fe/H] | –0.03[3] dex |
| Rotational velocity (v sin i) | 1.6[6] km/s |
| Other designations | |
Phi Aurigae (φ Aur, φ Aurigae) is the Bayer designation for a star in the northern constellation of Auriga. It is faintly visible to the naked eye with an apparent visual magnitude of 5.089.[2] The distance to this star, as determined from parallax measurements, is approximately 450 light-years (140 parsecs) with a 40 light-year margin of error.[1] This is an evolved giant star with a stellar classification of K3 IIIp[3] and an estimated radius equal to 16 times the radius of the Sun. The outer envelope has an effective temperature of 4,367 K,[3] giving it the cool orange-hued glow of a K-type star.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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 3.2 3.3 3.4 3.5 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.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
