| Observation data|
|Apparent magnitude (V)|| +5.27 <tr valign=top><td>Distance</td><td>462 ± 67 ly|
(142 ± 21 pc)</td></tr><tr valign=top><td>Spectral type</td><td>B5IV</td></tr>
The primary component, τ¹ Arietis A, is an eclipsing binary which is classified as a blue-white B-type subgiant. The two components have apparent magnitudes of +5.4 and +7.9 and are separated by 0.15 arcseconds. At 0.67 arcseconds from A is τ¹ Arietis B, which has an apparent magnitude of +8.4. The combined mean apparent magnitude of the system is +5.27, but due to eclipsing of the binary components, the brightness varies from magnitude +5.26 to +5.32.