Page "Capricornus" Paragraph 8

The brightest star in Capricornus is δ Capricorni, also called Deneb Algedi, with a magnitude of 2. 9, 39 light-years from Earth.

Like several other stars such as Denebola and Deneb, it is named for the Arabic word for " tail " ( deneb ); its traditional name means " the tail of the kid ".

Deneb Algedi is a Beta Lyrae variable star ( a type of eclipsing binary ).

It ranges by about 0. 2 magnitudes with a period of 24. 5 hours.