Johannes Hevelius, Polish astronomer and politician (died 1687)

Johannes Hevelius was a councillor and mayor of Danzig (Gdańsk), in the Polish–Lithuanian Commonwealth. As an astronomer, he gained a reputation as "the founder of lunar topography", and described ten new constellations, seven of which are still used by astronomers.

January 28 is the 28th day of the year in the Gregorian calendar; 337 days remain until the end of the year.