20 Arietis

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20 Arietis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aries
Right ascension 02h 15m 46.04981s[1]
Declination +25° 46′ 58.5741″[1]
Apparent magnitude (V) 5.79[2]
Distance 137 ± 2 ly
(42.1 ± 0.6[1] pc)
Spectral type F6 IV-V[3]
Other designations
BD+25 373, HD 13871, HIP 10540, HR 656, SAO 75239.[4]

20 Arietis (abbreviated 20 Ari) is a star in the northern constellation of Aries. 20 Arietis is the Flamsteed designation. A member of the Hyades open cluster (Melotte 25) it has an apparent visual magnitude of 5.79,[2] which is bright enough to be just faintly visible to the named eye. Based upon an annual parallax shift of 23.75 ± 0.33 mas, it is approximately 137 light-years (42 parsecs) distant from Earth.

This star has a stellar classification of F6 IV-V,[3] with the spectrum indicating it shows properties of both a main sequence and a more evolved subgiant star. 20 Arietis is around 1.7 billion years old.[5]

References

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External links


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