New planetary moons in the solar system are discovered all the time.
At this writing, Jupiter wins, hands down, with a total of thirty-nine sixteen well-known moons and some lesser-known, more recently discovered moons.
All of Jupiter’s major moons are named after mythological characters.
Jupiter’s four large moons are Io, Europa, Ganymede, and Callisto.
Jupiter’s smaller moons are Metis, Adrastea, Amalthea, Thebe, Leda, Himalia, Lysithea, Elara, Ananke, Carme, Pasiphae, and Sinope.