Star
Tiaki
Red star · M5III
β Gruis · Grus
Shown in its true colour — like most stars, it is too far away to photograph as more than a point of light.
Beta Gruis, formally named Tiaki, is the second brightest star in the southern constellation of Grus. It was once considered the rear star in the tail of the constellation of the (Southern) Fish, Piscis Austrinus: it, with Alpha, Delta, Theta, Iota, and Lambda Gruis, belonged to Piscis Austrinus in medieval Arabic astronomy.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~177 light-years
Apparent mag.
+2.07
Spectral type
M5III
Luminosity
381 × Sun
Absolute mag.
−1.60
Catalogue
HIP 112122
Spectral type
M5III
True colour from its B–V index (1.61): a surface around 3600 K.
Did you know
- Tiaki is also known as β Gruis.
- Its spectral type M5III marks it as a red star.
- It lies in the constellation Grus.
