Topic

hipparchus

Not who you're looking for? Others named hipparchus: 2nd century Greek astronomer, geographer and mathematician · crater on Mars · tyrant of Athens from c. 528 BC to 514 BC · dialogue attributed to Plato

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Overview

Hipparchus, anglicized hipparch, was the title of an ancient Greek cavalry officer, commanding a hipparchia (unit of about 500 horsemen); two such units were commanded by an epihipparchos. Ancient Greek military terminology Military ranks of ancient Greece Military ranks of ancient Macedon Cavalry

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Notable quotes

“I have composed a book on the length of the year in which I show that the tropical year contains 365 days plus a fraction of a day which is not exactly 1/4 days as the mathematicians-astronomers suppose, but which is less than 1/4 by about 1/300.”
— Hipparchus from Ptolemy, Almagest

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