Star profile
Delta Tucanae
Hot blue starWhat is Delta Tucanae
Delta Tucanae flares 251 light-years away in Tucana, a southern constellation drawn up by Bayer from the catalogues of Keyser and de Houtman. A hot blue-white B-type star, it is a celestial neighbour of the Small Magellanic Cloud and of the globular cluster 47 Tucanae. Its light accompanies one of the most beautiful tableaux of the southern firmament —where satellite galaxy and cluster meet within a single glance.
Where it is and when to see it
Delta 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 July, 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 59° up.
It can be seen from anywhere south of 25° N.
It ranks no. 7 in brightness among the 28 stars of Tucana in our catalogue. To find it, start from Alpha Tucanae, the brightest: it lies about 5° away (a fist at arm's length covers about 10°).
The light you see today left it about 250 years ago.
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Astronomical data for Delta Tucanae
- Constellation
- Tucana
- Apparent magnitude
- 4.51
- Distance
- 250.9 light years
- Coordinates (J2000)
- RA 336.833° · Dec -64.966°
- Catalogue
- HIP 110838 · HD 212581
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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
- Beta 1 Tucanae4.36
- Epsilon Tucanae4.49
- Beta 2 Tucanae4.53
- Nu Tucanae4.91