- died 514 b.c., tyrant of Athens 527–514.
- c190–c125 b.c., Greek astronomer.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hipparchus
The first catalogue of the stars of which we have record was that of Hipparchus in 129 b.c.The Astronomy of the Bible
E. Walter Maunder
After his death, his sons Hipparchus and Hippias succeeded him in the tyranny.Historic Tales, vol 10 (of 15)
We must however commence, as Hipparchus does, with the southern regions.
But the system of Hipparchus altogether teems with difficulties.
We will now return at once to Hipparchus, and see what comes next.
- 2nd century bc, Greek astronomer. He discovered the precession of the equinoxes, calculated the length of the solar year, and developed trigonometry
- died 514 bc, tyrant of Athens (527–514)
- a large crater in the SW quadrant of the moon, about 130 kilometres in diameter
- Greek astronomer who mapped the positions of about 850 stars in the earliest known star chart (129 bce). His observations of the heavens formed the basis of Ptolemy's Earth-centered model of the universe. He was also a pioneer of trigonometry.
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