| CODATA | calculated |
| mτ = 3.16754 (21) × 10−27 kg | 3.1675387996011 × 10−27 kg |
| λcτ = 6.97771 (19) × 10−16 m | 6.9777175091772 × 10−16 m |
| rτ = missing | 8.1039890285167 × 10−19 m |
| Eτ = 2.84684 (19) × 10−10 J | Entry Parameter |
| μτ = missing | −2.6670712373284 × 10−27J/T |
| Jzτ = missing | 3.9065102933190 × 10−59 kg∙m2 |
| I = missing (charge current) | 6.8836330880754 × 104 A |