92/91
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| Ratio | 92/91 |
| Factorization | 22 × 7-1 × 13-1 × 23 |
| Monzo | [2 0 0 -1 0 -1 0 0 1⟩ |
| Size in cents | 18.920779¢ |
| Name | undinisma |
| Color name | 23o3ur1, twethothuru 1sn, Twethothuru comma |
| FJS name | [math]\text{d}{-2}^{23}_{7,13}[/math] |
| Special properties | superparticular, reduced |
| Tenney height (log2 nd) | 13.0314 |
| Weil height (log2 max(n, d)) | 13.0471 |
| Wilson height (sopfr (nd)) | 47 |
| Harmonic entropy (Shannon, [math]\sqrt{nd}[/math]) |
~3.60956 bits |
| Comma size | small |
| open this interval in xen-calc | |
92/91, the undinisma is a 23-limit superparticular comma measuring about 18.9 cents. It forms the difference between 8/7 and 26/23, as well as 23/16 and 91/64 (larger huntmic tritone).
Etymology
The name undinisma was named by Xenllium in 2023. It refers to 92 Undina, the asteroid. Which was in turn named after the protagonist of the fairy-tale novella ‘Undine’ (1811).