What is Delta Eridani?

Delta Eridani, which is Latinized from δ Eridani, is a star in the equatorial constellation of Eridanus. It is sometimes called Rana: Rana means "the frog" in Latin, but derivation of this name is uncertain. The star is visible to the naked eye and has been observed to vary in slightly brightness between magnitudes 3.51 and 3.56, although subsequent observations did not bear this out. It is relatively near to the Sun, with a distance of about 29.5 light years as determined from parallax. The star is drifting closer with a radial velocity of −6 km/s.