Star profile
Beta 1 Tucanae
Hot blue starWhat is Beta 1 Tucanae
Beta-1 Tucanae is part of a notable multiple system alongside Beta-2 and Beta-3, three stars that split cleanly in binoculars within the body of the southern Toucan. It is a hot blue B-type star, young and bright, whose light takes some 135 years to reach us. Seen from the southern hemisphere, it traces with its siblings a small geometric cluster that has guided astronomers ever since Bayer charted the southern sky in his Uranometria of 1603.
Where it is and when to see it
Beta 1 Tucanae lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is August, when it culminates around midnight.
- From London it never rises above the horizon.
- From New York it never rises above the horizon.
- From Sydney it never sets and culminates about 61° up.
It can be seen from anywhere south of 27° N.
It ranks no. 5 in brightness among the 28 stars of Tucana in our catalogue. To find it, start from Alpha Tucanae, the brightest: it lies about 16° away (a fist at arm's length covers about 10°).
The light you see today left it about 140 years ago.
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Astronomical data for Beta 1 Tucanae
- Constellation
- Tucana
- Apparent magnitude
- 4.36
- Distance
- 135.1 light years
- Coordinates (J2000)
- RA 7.886° · Dec -62.958°
- Catalogue
- HIP 2484 · HD 2884
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Other stars in Tucana
Tucana has 28 stars in Stelvia's catalogue. Here are a few of them.
- Alpha Tucanae2.87
- Gamma Tucanae3.99
- Zeta Tucanae4.23
- Kappa Tucanae4.25
- Epsilon Tucanae4.49
- Delta Tucanae4.51
- Beta 2 Tucanae4.53
- Nu Tucanae4.91