Seam 24°42′
24°42′
Open
The Book’s 24°42′ seam (precessional / galactic-equator neighbor)
EngravingSidney Hall, Urania’s Mirror (1824)Public domainpositions JPL DE421
Twenty-four degrees forty-two minutes is a printed seam, not a second rainbow. 24 | 42 remain distinct marks.
What it supports
A named Book/CIPHER plate. Approximate sky-angle, labeled as such.
What it does not
Not the footer seal counted a hundred times. Not proof of a galactic law.
ExactnessApproximate
FormComposite 24 | 42
Unit° ′
Strengthmemoir