Kappa Arietis
 Location of κ Arietis (circled) |
|
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Aries |
| Right ascension | 02h 06m 33.92388s[1] |
| Declination | +22° 38′ 53.9267″[1] |
| Apparent magnitude (V) | 5.02[2] |
| Characteristics | |
| U−B color index | +0.11[2] |
| B−V color index | +0.12[2] |
| Astrometry | |
| Radial velocity (Rv) | +11.5[3] km/s |
| Proper motion (μ) | RA: +17.86[1] mas/yr Dec.: –37.55[1] mas/yr |
| Parallax (π) | 17.96 ± 0.37 mas |
| Distance | 182 ± 4 ly (56 ± 1 pc) |
| Details | |
| Surface gravity (log g) | 4.0[4] cgs |
| Temperature | 8,700[4] K |
| Metallicity [Fe/H] | +0.18[4] dex |
| Rotational velocity (v sin i) | 18[5] km/s |
| Other designations | |
Kappa Arietis (κ Ari, κ Arietis) is the Bayer designation for a binary star in the northern constellation of Aries. It is approximately 182 light-years (56 parsecs) distant from Earth. The combined apparent visual magnitude of the pair is 5.02,[2] making the system bright enough for it to be dimly visible to the naked eye. Kappa Arietis is a double-lined spectroscopic binary with both components displaying the spectral properties of an Am, or metallic-lined star. They have nearly the same brightness and their mass ratio is 1.03; very close to equal.[4] Their orbital period is 15.2938 days and they have a high eccentricity of 0.61.[7]
References
- ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 4.3 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.
External links
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