Seascape comma

Interval information

Ratio	160083/160000
Factorization	2-8 × 33 × 5-4 × 72 × 112
Monzo	[-8 3 -4 2 2⟩
Size in cents	0.8978448¢
Name	seascape comma
Color name	bilozogugu 2nd, 1oozzg42, bilozogugu comma
FJS name	[math]\displaystyle{ \text{dd2}^{7,7,11,11}_{5,5,5,5} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	34.5762
Weil norm (log2 max(n, d))	34.5769
Wilson norm (sopfr(nd))	81
Comma size	unnoticeable
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160083/160000, the seascape comma, otherwise described as the undecimal hemifourths comma, is an unnoticeable 11-limit comma measuring about 9/10 of a cent.

It factors into simpler commas as (2401/2400)⋅(9801/9800).

Temperaments

Tempering out this comma gives the highly accurate rank-4 seascape temperament, which splits the perfect fourth, 4/3, into two intervals of 231/200.

Etymology

This comma was named by Tristan Bay in 2024, from the typical base-10 fractional representation of this interval bearing a striking resemblance of that of the landscape comma, 250047/250000, while only adding 11 to the mix of prime factors, and being of a relatively similar size.