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Astrology wiki
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1 terms
Locational geometry
Spherical geographic midpoint →
Also: spherical midpoint
The halfway point on the shorter great-circle arc between two places on a spherical Earth model.
Word origin, evidence & sources
Word origin · etymology
A descriptive mathematical name: spherical refers to a sphere, geographic to Earth coordinates, and midpoint to a halfway point.Sphere ultimately comes from Greek sphaira, ‘ball’; geography comes from Greek geōgraphia, describing the Earth's surface. The complete phrase specifies a construction rather than an ancient astrological entity.
How we know · epistemology
Declared geographic constructionThis is one Davison location convention. Antipodal places have no unique shortest arc, and a polar midpoint has no unique longitude. The result is not an astrologically verified ideal location.