HD 17943

HD 17943, or HR 859, is a high proper-motion star in the constellation of Eridanus. It has a right ascension of 02:52:50.74 and a declination of −09°26′28.4″. Its apparent magnitude is equal to 6.325. Based on parallax measurements from the Gaia spacecraft, it is at a distance of 306 ly. It belongs to spectral class A4V.

This star is incorrectly called by the Bayer designation "Sigma Eridani" in the 1991 edition of the Bright Star Catalogue. Bayer's Sigma Eridani is in fact non-existent.