Herschel discovers Oberon

The precise dated sighting enabled other astronomers to establish the object's orbit.

Titania was one of the first two moons of Uranus discovered on this date.

Observations of a faint point near the planet added a new satellite to the known solar system.

Titania's detection showed that the recently identified planet was orbited by moons.

Herschel's observation of Titania demonstrated that distant satellites could be detected from Earth.

The paired discoveries changed astronomers' picture of the recently found planet.

Oberon and Titania were identified together; modern spacecraft later examined both worlds.

Oberon's discovery expanded the family of known moons beyond Saturn.

From Palermo, Piazzi spotted an object between Mars and Jupiter that later became known as Ceres.

Initially understood as a new planet, Ceres was later classed among asteroids and then as a dwarf planet.