Friedrich Bessel
Friedrich Wilhelm Bessel (22 July 1784 – 17 March 1846) was a German mathematician, astronomer, and systematizer of the Bessel functions (which were discovered by Daniel Bernoulli). He was a contemporary of Carl Gauss, also a mathematician and physicist. The asteroid 1552 Bessel was named in his honour.
Read more about Friedrich Bessel: Life and Work, Publications, Further Reading