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.) |
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.
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