📅 13 Maart 1781
He recorded a small object in Gemini, at first thinking it might be a comet.
📅 13 Maart 1781
Later observations showed that Herschel's object was a planet beyond Saturn.
📅 13 Maart 1781
The first modern discovery of a planet began with this observation.
📅 13 Maart 1781
The precise dated sighting enabled other astronomers to establish the object's orbit.
📅 11 Januari 1787
Titania was one of the first two moons of Uranus discovered on this date.
📅 11 Januari 1787
Observations of a faint point near the planet added a new satellite to the known solar system.
📅 11 Januari 1787
Titania's detection showed that the recently identified planet was orbited by moons.
📅 11 Januari 1787
Herschel's observation of Titania demonstrated that distant satellites could be detected from Earth.
📅 11 Januari 1787
Oberon was observed on the same night as Titania, revealing a second moon of Uranus.
📅 11 Januari 1787
The paired discoveries changed astronomers' picture of the recently found planet.
📅 11 Januari 1787
Oberon and Titania were identified together; modern spacecraft later examined both worlds.
📅 11 Januari 1787
Oberon's discovery expanded the family of known moons beyond Saturn.
