Directory of Map Projections

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Ptolemy II

Ptolemy's homeotheric

Description

One of three conic-like projections proposed by Claudius Ptolemy.

Classifications

pseudoconic
archaic

Graticule

Meridians: Circular arcs.
Parallels: Arcs of circles, equally spaced, bounded at the north by the latitude of Thule (63°) and south by the latitude of Meroe (16°).
Poles: Arcs of circles.

Similar projections

Bonne can be configured such that its middle portion approximates this projection.

Origin

Claudius Ptolemy circa 160 AD. The name homeotheric, meaning equal-area, was given by D’Avezac-Macaya in 1863. However, the projection is not strictly equal-area.

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