• Born date: 1784-07-22
  • Born in: GerMany
  • Death date: 1846-03-17
  • Death in: Russia
Friedrich Bessel

Friedrich Wilhelm Bessel (German: [ˈbɛsl]; 22 July 1784 – 17 March 1846) was a German astronomer, mathematician (systematizer of the Bessel functions, which were discovered by Daniel Bernoulli). He was the first astronomer to determine the distance from the sun to another star by the method of parallax.