al-Battani

Full Name: Abu Abd Allah Muhammad ibn Jabir ibn Sinan al-Raqqi al-Harrani as-Sabi al-Battani

Arabic: محمد بن جابر بن سنان البتاني

Latin: Albategnius, Albategni or Albatenius

Born: 858 AD

Origin: Haran Turkey / Raqqa, now in Syria

Dies: 929 AD

Famous for: Mathematician, Astronomer, and Astrologer

Contribution:

The first of a generation of new Islamic astronomers

He cataloged 489 stars

The first astronomers to observe that the distance between the Earth and the Sun varies during the year

Introduction of the use of sines and tangents in geometrical calculations