Psi1 Aurigae
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- For other star systems with this Bayer designation, see Psi Aurigae.
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 24m 53.9027s |
| Declination | +49° 17′ 16.415″ |
| Apparent magnitude (V) | 4.97 |
| Characteristics | |
| Spectral type | M0 I[1] |
| U−B color index | 1.07 |
| B−V color index | 1.97 |
| R−I color index | 1.07 |
| Variable type | Irregular variable |
| Astrometry | |
| Radial velocity (Rv) | 4.7 ± 0.9 km/s |
| Proper motion (μ) | RA: 0.82 ± 0.82 mas/yr Dec.: -2.48 ± 0.47 mas/yr |
| Parallax (π) | 0.85 ± 0.81 mas |
| Distance | approx. 4,000 ly (approx. 1,000 pc) |
| Absolute magnitude (MV) | -5.63 |
| Details | |
| Temperature | 3,750[1] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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Psi1 Aurigae (ψ1 Aur, ψ1 Aurigae) is a star in the constellation Auriga.
ψ1 Aurigae is an orange K-type supergiant with a mean apparent magnitude of +4.92. It is approximately 3837 light-years from Earth. It is classified as an irregular variable star and its brightness varies from magnitude +4.75 to +5.70.
[edit] References
- ^ a b Levesque, Emily M. et al. (August 2005), "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought", The Astrophysical Journal 628 (2): 973–985, arXiv:astro-ph/0504337, Bibcode 2005ApJ...628..973L, doi:10.1086/430901
[edit] External links
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