An apparent planet appears in the asteroid belt

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 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.

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.

Galle and d'Arrest found the predicted planet near a position calculated by Le Verrier.

Perturbations in Uranus's orbit had led Le Verrier and independently Adams toward a possible unseen planet.

Comparing sky positions with a chart made the new planet identifiable during the observing session.