| Identity |
| Name: | tau Eridani |
| Hipparcos catalog ID: | 15474 |
| Other star catalog entries: | HD 20720
SAO 168460
BD B-22 584
CoD C-22 1154
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| |
| Appearance |
| Visual magnitude: | 3.7 (source: Hipparcos) |
| Spectral type: | M3/M4III |
| |
| Position and motion (Epoch J1991.25) in J2000 reference frame |
| Right ascension | 3h 19m 30.96965s (+/-0.00002s) |
| Declination | -21° 45' 28.5930" (+/-0.0003") |
| Parallax: | 10.71 (+/-0.54) mas |
| Derived distance: | 305 light-years |
| Proper motion in R.A.: | 51.89 (+/-0.46) mas/year |
| Proper motion in declination: | 32.92 (+/-0.56) mas/year |
| Constellation: | Eridanus | |