17/8

Interval information

Ratio	17/8
Subgroup monzo	2.17 [-3 1⟩
Size in cents	1304.955¢
Names	septendecimal minor ninth, septendecimal augmented octave
Color name	17o9, iso 9th
FJS name	[math]\displaystyle{ \text{m9}^{17} }[/math]
Tenney norm (log2 nd)	7.08746
Weil norm (log2 max(n, d))	8.17493
Wilson norm (sopfr(nd))	23
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17/8 is the distance between the 17th and the 8th harmonic. It spans the size of 1304.95541 cents. It is essentially a large septendecimal semitone (17/16) but one octave higher.

This interval is a near-perfect approximation of the minor ninth in 12edo, with an error of only ~5 cents, stemming from 12edo's near-perfect approximation of the 2.3.17.19 subgroup.