Sigma Ceti (σ Ceti) is the Bayer designation for a star in the equatorial constellation of Cetus.
With an apparent visual magnitude of 4.78,[2] it can be seen with the naked eye on a dark night.
Based upon an annual parallax shift of 37.46 mas,[1] it lies at an estimated distance of 87.1 light years from the Sun.
It is a probable astrometric binary star system.
[11] The primary, component A, appears to be a normal F-type main sequence star with a stellar classification of F5 V.[3] However, Malaroda (1975) assigned it a classification of F4 IV,[4] which would suggest it is a more evolved subgiant star.