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Gamma Gruis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Grus
Right ascension 21h 53m 55.70s
Declination -37° 21' 54.0"
Apparent magnitude (V) 3.00
Distance 203 ly
(62.27 pc)
Spectral type B8III
Other designations
HD 207971, HR 8353, SAO 213374, FK5 822, NSV --, CD -37 14536, HIP 108085

Gamma Gruis (γ Gru / γ Gruis) is the 3rd-magnitude star in the constellation Grus. It is also known as Al Dhanab, "the Tail (of the constellation of the Southern Fish)".[1] It was formerly belong to the Ptolemaic constellation Piscis Austrinus as unformed one.

And it was also known as 敗臼一, "the First (Srar) of the Decayed Handmill", in the traditional Chinese astronomy.

Gamma Gruis has apparent magnitude +3.01 (third-magnitude) and is a blue giant belonging to spectral class B8III. The luminosity of Gamma Gruis is neary 210 times that of the Sun. It is approximately 203 light years from Earth.

See also


  1. ^ Allen, R. H., (1963). Star Names: Their Lore and Meaning (rep. ed.). New York, NY: Dover Publications Inc.. p. 238. ISBN 0486210790.  

External links



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