23/13

Interval information

Ratio	23/13
Subgroup monzo	13.23 [-1 1⟩
Size in cents	987.7467¢
Name	vicesimotertial minor seventh
Color name	23o3u7, twethothu 7th
FJS name	[math]\displaystyle{ \text{A6}^{23}_{13} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	8.224
Weil norm (log2 max(n, d))	9.04712
Wilson norm (sopfr(nd))	36
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23/13, the vicesimotertial minor seventh, is a 23-limit interval.

Approximation

Edo approximations for 23/13 (987.75 ¢)
≤ 80edo, relative error ≤ 10%

Edo	Step size	Cents (¢)	Absolute error (¢)	Relative error (%)
6	5\6	1000.00	+12.25	+6.13
11	9\11	981.82	-5.93	-5.43
17	14\17	988.24	+0.49	+0.69
23	19\23	991.30	+3.56	+6.82
28	23\28	985.71	-2.03	-4.74
34	28\34	988.24	+0.49	+1.38
40	33\40	990.00	+2.25	+7.51
45	37\45	986.67	-1.08	-4.05
51	42\51	988.24	+0.49	+2.08
56	46\56	985.71	-2.03	-9.48
57	47\57	989.47	+1.73	+8.20
62	51\62	987.10	-0.65	-3.36
68	56\68	988.24	+0.49	+2.77
73	60\73	986.30	-1.45	-8.79
74	61\74	989.19	+1.44	+8.90
79	65\79	987.34	-0.40	-2.67

See also

• 26/23 – its octave complement
• Gallery of just intervals
• 23-odd-limit

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