Epsilon Circini (ε Cir), is a star located in the constellation Circinus. Epsilon Circini is also known as HR 5666, and HD 135291. The star is located at Right Ascension 15h 17m 39s and Declination -63 deg 36 arcmin 38 arcsec.
Epsilon Circini is a K2.5III giant star with an effective temperature of 4300 Kelvin. It has an apparent visual magnitude +4.86, an absolute magnitude of -0.442 and a mass of 1.1 solar masses. The star is 114 parsecs (372 light years), from the Sun.