Epsilon Aquarii: Difference between revisions
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Latest revision as of 06:00, 13 August 2024
ε Aquarii is a bright star in the constellation Aquarius and is also known by its common name of Al Bali.
Naming and mythology
Al Bali is named from the Arabic Al Saʽd al Bulaʽ which, like some other stars of this constellation, contains the Arabic for Luck, sa. In this case the meaning seems to be "lucky swallower".[1]
Observational attributes
Al Bali can be found at coordinates R.A. 20h 47m 40.6s and Dec. -9° 29ˈ 45ˈˈ. It is a star of apparent magnitude +3.77 and some 155 light years distant as can be calculated from its parallax of 0.021ˈˈ.[2]
The star's proximity to NGC 6981 (Messier 72) and NGC 6994 (Messier 73) makes ε Aqr. an ideal starting point in locating these two deep-sky objects.
Physical characteristics
ε Aquarii is a star of spectral type A1V. There is no evidence of it being either variable or part of a binary system.