Lambda Arietis
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| Observation data Epoch J2000 Equinox J2000 |
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|---|---|
| Constellation | Aries |
| Right ascension | 01h 57m 55.7172s |
| Declination | +23° 35′ 45.82″ |
| Apparent magnitude (V) | 4.776 |
| Characteristics | |
| Spectral type | F0V |
| U−B color index | 0.09 |
| B−V color index | 0.28 |
| R−I color index | 0.16 |
| Astrometry | |
| Radial velocity (Rv) | -1.4 km/s |
| Proper motion (μ) | RA: -91.51 mas/yr Dec.: -14.45 mas/yr |
| Parallax (π) | 24.49 ± 0.78 mas |
| Distance | 133 ± 4 ly (41 ± 1 pc) |
| Absolute magnitude (MV) | 5.047 |
| Details | |
| Mass | 1.7 M☉ |
| Radius | 1.4 R☉ |
| Luminosity | 6 L☉ |
| Temperature | 6,000–7,500 K |
| Rotational velocity (v sin i) | 99 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
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Lambda Arietis (λ Ari, λ Arietis) is a double star in the constellation Aries. It is approximately 133 light years from Earth.
The brighter component is a yellow-white F-type main sequence dwarf with an apparent magnitude of +4.9. Its companion is 37.4 arcseconds away, and has an apparent magnitude of +7.4. The combined apparent magnitude of the system is 4.79.
[edit] References
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