Timeline of Discovery of Solar System Planets and Their Moons - 18th Century

18th century
Date Name Image Other/Permanent designation Discoverer(s) and notes
1780s
o: March 13, 1781
p: April 26, 1781
Uranus 7th Planet Herschel first reported the discovery of Uranus on April 26, 1781, initially believing it a comet.
o: January 11, 1787
p: February 15, 1787
Titania Uranus III Herschel. He later reported four more spurious satellites.
Oberon Uranus IV
o: August 28, 1789
p: November 12, 1789
Enceladus Saturn II Herschel
o: September 17, 1789
p: November 12, 1789
Mimas Saturn I
Date Name Image Other/Permanent designation Discoverer(s) and notes

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