Psi8 Aurigae
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- For other star systems with this Bayer designation, see Psi Aurigae.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 53m 13.40058s[1] |
| Declination | +38° 26′ 16.8476″[1] |
| Apparent magnitude (V) | 6.319[2] (6.47/8.96)[3] |
| Characteristics | |
| Spectral type | F5 V[4] (A8/G0)[3] |
| B−V color index | +0.328[2] |
| Astrometry | |
| Radial velocity (Rv) | +32.4[5] km/s |
| Proper motion (μ) | RA: +42.40[1] mas/yr Dec.: -179.12[1] mas/yr |
| Parallax (π) | 15.21 ± 1.03[1] mas |
| Distance | 210 ± 10 ly (66 ± 4 pc) |
| Absolute magnitude (MV) | 2.11[2] |
| Orbit[3] | |
| Period (P) | 271.10 yr |
| Semi-major axis (a) | 0.793" |
| Details | |
| Temperature | 6,223[2] K |
| Metallicity [Fe/H] | +0.04[2] dex |
| Age | 1.7[2] Gyr |
| Other designations | |
Psi8 Aurigae (ψ8 Aur, ψ8 Aurigae) is the Bayer designation for a binary star[3] system in the northern constellation of Auriga. The pair have a combined apparent visual magnitude of 6.319[2] and, based upon parallax measurements, they are approximately 210 light-years (64 parsecs) distant from the Earth.[1]
The combined spectrum of the pair match a stellar classification of F5 V.[4] The primary component may be an A-type star with an apparent magnitude of 6.47,[3] while the fainter, 8.96 magnitude secondary is possibly a G-type star. The pair orbit each other with a period of 271.1 years at an angular separation of 0.793 arcseconds.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, Floor (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, arXiv:0708.1752v1, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. Note: see VizieR catalogue I/311.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Cvetkovic, Z.; Ninkovic, S. (June 2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal 180: 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C.
- ↑ 4.0 4.1 4.2 "60 Aur -- Star", SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-08-24.
- ↑ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E.
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