Not who you're looking for? Others named hipparchus: 2nd century Greek astronomer, geographer and mathematician · tyrant of Athens from c. 528 BC to 514 BC · crater on Mars · dialogue attributed to Plato
Hipparchus, anglicized hipparch, was the title of an ancient Greek cavalry officer, commanding a hipparchia.
“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.”
Quotes via Wikiquote (CC BY-SA), each with its original source.
