Two moons emerge on one observing night

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.

Oberon was observed on the same night as Titania, revealing a second moon of Uranus.

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

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.

Piazzi's discovery gave observers a new moving object whose orbit needed determination.

The discovery marked the first identification of an object in the asteroid belt.