| Identity |
| Name: | tau Eridani |
| Hipparcos catalog ID: | 12843 |
| Other star catalog entries: | HD 17206
SAO 148584
BD B-19 518
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| Appearance |
| Visual magnitude: | 4.47 (source: ground based) |
| Spectral type: | F5/F6V |
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| Position and motion (Epoch J1991.25) in J2000 reference frame |
| Right ascension | 2h 45m 5.98144s (+/-0.00009s) |
| Declination | -18° 34' 21.5404" (+/-0.0014") |
| Parallax: | 70.32 (+/-1.83) mas |
| Derived distance: | 46.4 light-years |
| Proper motion in R.A.: | 334.2 (+/-1.62) mas/year |
| Proper motion in declination: | 37.19 (+/-1.86) mas/year |
| Constellation: | Eridanus | |