Asteroid named after pope behind gregorian calendar reform

The International Astronomical Union has named an asteroid after Pope Gregory XIII, the 16th-century pontiff behind the Gregorian calendar reform. The asteroid has been named '560974 Ugoboncompagni' after Gregory's birth name Ugo Boncompagni. He, along with an Italian astronomer and a Jesuit mathematician, corrected the Julian calendar, introducing a new method of calculating leap years.