91/90

Interval information

Ratio	91/90
Factorization	2-1 × 3-2 × 5-1 × 7 × 13
Monzo	[-1 -2 -1 1 0 1⟩
Size in cents	19.12985¢
Names	biome comma, superleap comma
Color name	3ozg2, thozogu 2nd, Thozogu comma
FJS name	[math]\displaystyle{ \text{d2}^{7,13}_{5} }[/math]
Special properties	superparticular, reduced
Tenney height (log2 nd)	12.9996
Weil height (log2 max(n, d))	13.0156
Wilson height (sopfr(nd))	33
Comma size	small
S-expression	S13 × S14
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The superparticular interval 91/90, the biome comma or superleap comma, is a small comma of about 19 cents.

For temperaments eliminating this comma, see also The Biosphere.