Mu Arietis
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Aries |
| Right ascension | 02h 42m 21.9397s |
| Declination | +20° 00′ 41.274″ |
| Apparent magnitude (V) | 5.738 |
| Characteristics | |
| Spectral type | A0V |
| U−B color index | -0.03 |
| B−V color index | -0.02 |
| Astrometry | |
| Radial velocity (Rv) | -7 km/s |
| Proper motion (μ) | RA: 27.49 mas/yr Dec.: -46.08 mas/yr |
| Parallax (π) | 9.64 ± 0.88 mas |
| Distance | 340 ± 30 ly (104 ± 9 pc) |
| Absolute magnitude (MV) | 5.72 |
| Details | |
| Mass | 3.1 M☉ |
| Radius | 2.1 R☉ |
| Luminosity | 40 L☉ |
| Temperature | 7,500–10,000 K |
| Rotational velocity (v sin i) | 195 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
| Database references | |
| SIMBAD | data |
Mu Arietis (μ Ari, μ Arietis) is a star system in the constellation Aries. It is approximately 338 light years from Earth.
It consists of a spectroscopic binary[citation needed] and a third component. The binary is classified as a white A-type main sequence dwarf with an apparent magnitude of +5.74. The two components are separated by 0.05 arcseconds and have an orbital period of 8.8 years.[citation needed] The third component is 19.1 arcseconds distant and has an apparent magnitude of +12.1.
[edit] References
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