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Tau-1
Variable starIts story
Tau-1 Arietis is a system of three stars in the Ram. The two innermost form an eclipsing binary with a period of just over two days: each turn, one passes in front of the other and dims their combined light a fraction. Young, massive, a member of the Cas-Tau OB association sweeping across the sky as one.
- Constellation
- Aries
- Apparent magnitude
- 5.27
- Distance
- 508.9 light years
- Coordinates (J2000)
- RA 50.307° · Dec 21.147°
- Catalogue
- HIP 15627 · HD 20756
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