Georg Joachim Rheticus, Austrian cartographer and instrument maker (died 1574)

Georg Joachim de Porris, also known as Rheticus, was a mathematician, astronomer, cartographer, navigational-instrument maker, medical practitioner, and teacher. He is perhaps best known for his trigonometric tables and as Nicolaus Copernicus's sole pupil. He facilitated the publication of his master's De revolutionibus orbium coelestium.

February 16 is the 47th day of the year in the Gregorian calendar; 318 days remain until the end of the year.