As of today, no known moon in our solar system has a name that starts with the letter Q. This is not a gap in discovery or a missing database entry — it is a straightforward result of how moons get their names. The scientific community has confirmed hundreds of natural satellites orbiting planets from Mercury to Neptune, and not a single one carries a name beginning with Q.

The reason comes down to naming conventions set by the International Astronomical Union, the body responsible for officially naming celestial objects. Each planet’s moons draw names from a specific cultural or literary tradition. Jupiter’s moons are named after figures connected to the god Zeus in Greek and Roman mythology. Saturn’s moons come from Norse, Inuit, Gallic, and Greco-Roman traditions. Uranus’s moons are named after characters from the works of William Shakespeare and the poet Alexander Pope. Neptune’s moons take their names from figures associated with the sea. The letter Q appears almost nowhere in these traditions. Ancient Greek and Latin mythology have very few Q names, Shakespeare’s plays and poems contain no notable characters whose names begin with Q, and the same holds for the other naming pools used across the solar system.

There are no close candidates that nearly made the cut either. No provisional designation has been converted into a Q name, and no mythological figure commonly associated with any of the naming traditions starts with that letter. The absence is not a coincidence or an oversight — it is a natural outcome of the linguistic roots the astronomical community has relied on for over a century.