Unukalhai is a star located in the constellation of Serpens. It is classified as a red giant, which means it has expanded and cooled after exhausting the hydrogen in its core. This star is notable for its brightness and is often used in astronomy for various studies. The name "Unukalhai" comes from the Arabic phrase meaning "the serpent's neck," reflecting its position in the Serpens constellation. It is approximately 75 light-years away from Earth and has a surface temperature of around 4,500 Kelvin, giving it a reddish hue that distinguishes it from hotter stars.