Abraham Zacuto

Abraham Zacuto (Hebrew: אַבְרָהָם בֵּן שְׁמוּאֵל זַכּוּת, romanized: Avraham ben Shmuel Zacut, Portuguese: Abraão ben Samuel Zacuto; 12 August 1452 – c.1515) was a Castilian astronomer, astrologer, mathematician, rabbi and historian who served as Royal Astronomer to King John II of Portugal.

Abraham Zacuto
Born(1452-08-12)12 August 1452
Died1515 (aged 6263)
Jerusalem or Damascus, Mamluk Sultanate

His astrolabe of copper, his astronomical tables and maritime charts played an important role in the Spanish and Portuguese navigation capability. They were used by Vasco Da Gama and Christopher Columbus.

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