Project icon: lavishly furnished initial letter with a painting of Ptolemy using an astrolab.

Ptolemaeus Arabus et Latinus

_ (the underscore) is the placeholder for exactly one character.
% (the percent sign) is the placeholder for no, one or more than one character.
%% (two percent signs) is the placeholder for no, one or more than one character, but not for blank space (so that a search ends at word boundaries).

At the beginning and at the end, these placeholders are superfluous.

Work A.5



On the means for plotting the declination of the Sun or any other heavenly body in any latitude at any time, which is relevant, e.g., to the construction of sundials.


Greek (Περὶ ἀναλήμματος). The original text is lost in Greek (except for a few passages) and survives in Latin only.


J. L. Heiberg, Claudii Ptolemaei opera quae exstant omnia, II: Opera astronomica minora, Leipzig, 1907, xi-xii and clxxix. See also A.5.1.


The extant Greek sections have been edited in Heiberg, 194-216, together with the corresponding Latin sections (see A.5.1).

Latin translations