Psi1 Aurigae
- For other star systems with this Bayer designation, see Psi Aurigae.
 The location of ψ1 Aurigae (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 24m 53.90129s[1] |
| Declination | +49° 17′ 16.4199″[1] |
| Apparent magnitude (V) | 4.91[2] |
| Characteristics | |
| Spectral type | M0 I[3] |
| U−B color index | +2.29[2] |
| B−V color index | +1.97[2] |
| R−I color index | 1.07 |
| Variable type | LC[4] |
| Astrometry | |
| Radial velocity (Rv) | +4.7[5] km/s |
| Proper motion (μ) | RA: –0.66[1] mas/yr Dec.: –1.82[1] mas/yr |
| Parallax (π) | 0.82 ± 0.28[1] mas |
| Distance | approx. 4,000 ly (approx. 1,200 pc) |
| Details | |
| Mass | 14.4 ± 0.8[6] M☉ |
| Radius | 637 R☉ |
| Luminosity | 63,579[7] L☉ |
| Temperature | 3,750[3] K |
| Metallicity [Fe/H] | +0.08[8] dex |
| Age | 12.3 ± 0.4[6] Myr |
| Other designations | |
Psi1 Aurigae (ψ1 Aur, ψ1 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 4.91.[2] Based upon a measured annual parallax shift of 0.82 mas,[1] it is approximately 4,000 light-years (1,200 parsecs) distant from the Earth.
This is a massive supergiant star with a stellar classification of M0 I.[3] It is a slow irregular variable of the LC type, with its brightness varying in magnitude by 0.44.[4] The star is more than 14[6] times as massive as the Sun and is blazing with 63,579[7] times the Sun's luminosity. This energy is being radiated into outer space from its outer atmosphere at an effective temperature of 3,750 K,[3] giving it the orange-red hue of a cool M-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 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 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.
