Hipparchus


Also found in: Encyclopedia, Wikipedia.
Related to Hipparchus: Ptolemy

Hip·par·chus

 (hĭ-pär′kəs) fl. second century bc.
Greek astronomer who discovered the precession of the equinoxes, developed the techniques of trigonometry, and catalogued the positions of 850 stars in the earliest known star chart.

Hipparchus

(hɪˈpɑːkəs)
n
1. (Biography) 2nd century bc, Greek astronomer. He discovered the precession of the equinoxes, calculated the length of the solar year, and developed trigonometry
2. (Biography) died 514 bc, tyrant of Athens (527–514)

Hipparchus

(hɪˈpɑːkəs)
n
(Astronomy) a large crater in the SW quadrant of the moon, about 130 kilometres in diameter

Hip•par•chus

(hɪˈpɑr kəs)

n.
1. died 514 B.C., tyrant of Athens 527–514.
2. c190–c125 B.C., Greek astronomer.

Hip·par·chus

(hĭ-pär′kəs)
Second century b.c. Greek astronomer who mapped the position of 850 stars in the earliest known star chart. His observations of the heavens formed the basis of Ptolemy's Earth-centered model of the universe.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Hipparchus - Greek astronomer and mathematician who discovered the precession of the equinoxes and made the first known star chart and is said to have invented trigonometry (second century BC)
Translations
Mentioned in ?
References in periodicals archive ?
I didn't back Four Ten but in one of the other races I had a shilling (5p) on Hipparchus, which won at odds of 100-1.
Plimpton 322 predates Hipparchus by more than 1000 years," says Wildberger.
All the early Greek and Roman writers on astronomy--Aratos, Hipparchus, Geminos, Vitruvius, Manilius--refer to this star-pattern simply as The Kneeler.
2) suggests that a bronze lioness statue dedicated by Callias was in honor of the mistress of Aristogeiton (Leaena), who was supposedly tortured by Hippias after the murder of Hipparchus.
Andre Fabre, who sent out Pour Moi to win the 2011 renewal, has Harlem, Heredity and Hipparchus for owner Khalid Abdullah.
The Antikythera mechanism, as it is known, was made some time in the first 200 years BC, possibly in Rhodes where the great mathematician Hipparchus may have had a hand in the design.
This progression is called the "precession of the equinoxes," which was possibly discovered for the first time by Hipparchus of Bithynia (flourish ca.
Newton's argument assumed the creative, some claimed absurd, idea that the Commentary of the Greek astronomer Hipparchus (composed ca.
It is even recorded that the fabled Greek astronomer Hipparchus had his own interest in the stars inspired by an observation of a supernova.
In classical times, Hipparchus (ca 150 BC) catalogued a number of stars but no dramatic improvements in accuracy were made until end of the 16th century, when the Danish astronomer Tycho Brahe introduced much improved instruments in his large well-funded observatory located on the island of Hven.
The ancient Greek astronomer Hipparchus introduced the magnitude system.
Most ironic of all, Hill apparently is unaware that some real historians suspect that Hipparchus invented the earliest astrolabes c.