Tau Ceti, Latinized from τ Ceti, is a single star in the constellation Cetus that is spectrally similar to the Sun, although it has only about 78% of the Sun's mass. At a distance of just under 12 light-years (3.7 parsecs) from the Solar System, it is a relatively nearby star and the closest solitary G-class star. The star appears stable, with little stellar variation, and is metal-deficient.
| Right ascension | 01h 44m 04.08338s[1] |
|---|---|
| Declination | −15° 56′ 14.9262″[1] |
| Apparent magnitude (V) | 3.50 ± 0.01[2] |
| Distance | 11.912 ± 0.007 ly |