Omicron Aurigae
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | +5.47[3] |
| Characteristics | |
| Spectral type | A1 Cr Eu[4] |
| U−B Template:Engvar | +0.02 |
| B−V Template:Engvar | +0.02[5] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[6] km/s |
| Proper motion (μ) | RA: −11.087 mas/yr[2] Dec.: +3.703 mas/yr[2] |
| Parallax (π) | 8.1876±0.2643 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.03[1] |
| Details | |
| Mass | 1.9[7] Template:Solar mass |
| Radius | 3.2[7] Template:Solar radius |
| Luminosity | 50[7] Template:Solar luminosity |
| Surface gravity (log g) | 3.7[7] cgs |
| Temperature | 8,300[7] K |
| Rotational velocity (v sin i) | 35.2±5.3[7] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[8] | |
| Database references | |
| SIMBAD | data |
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Omicron Aurigae is an astrometric binary[9] star system in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from ο Aurigae, and abbreviated Omicron Aur or ο Aur. With an apparent visual magnitude of 5.47,[3] it is faintly visible to the naked eye. Based upon an annual parallax shift of Script error: No such module "val".,[2] it is approximately Script error: No such module "convert". distant from Earth. It is drifting closer to the Sun with a radial velocity of −8 km/s.[6] The star is a member of the Ursa Major stream of co-moving stars.[10]
The visible component is a chemically peculiar star with a stellar classification of A1 Cr Eu; meaning this is an A-type star with a spectrum that shows anomalously high abundances of chromium (Cr) and europium (Eu).[4] A magnetic field has been detected and it is a source of X-ray emission with a luminosity of: log Lx = 29.1.[10] The star has 1.9 times the mass of the Sun and 3.2 times the Sun's radius. It is spinning with a projected rotational velocity of 35 km/s and is radiating 50 times the Sun's luminosity from its photosphere at an effective temperature of 8,300 K.[7]
References
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- ↑ a b Template:Cite XHIP
- ↑ a b c d e Template:Cite Gaia DR3
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
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- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d e f g Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
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