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Hipparchus was best known for his _____.


discovery of Saturn

calculations of Earth’s size

observations of the moon

star catalog

Respuesta :

he was best known for trigonometry.

Hope it helps :)

ANSWER:

Hipparchus was best known for his star catalog.

EXPLANATION:

  • Hipparchus was a "Greek astronomer and mathematician" who discovered the procession of equinoxes.
  • He also calculated the length of a year and developed early trigonometry. The star catalog developed by Hipparchus consists of an entry of almost 850 stars.
  • This catalog was completed in '129 BC'. The catalog also specified the apparent brightness of the various stars listed.
  • This catalog formed a basis for the development of various other star catalogs.