History Trivia - British astronomer Frederick William Herschel discovers the planet Uranus

March 13

 483 Felix III became pope.  He repudiated the Henoticon, a deed of union originating with Patriarch Acacius of Constantinople and published by Emperor Zeno with the view of allaying the strife between the Miaphysite Christians and Chalcedonian Christians.  This renunciation initiated the Acacian schism between the Eastern and Western Christian Churches that lasted thirty-five years. 

 607 12th recorded perihelion passage of Halley's Comet. 

1781 British astronomer Frederick William Herschel discovered the planet Uranus