The asteroid named Pandora after the mythological woman is 55 Pandora.
55 Pandora is a large main-belt asteroid discovered by the American astronomer George Mary Searle in 1858. It received the name Pandora in reference to the woman in Greek mythology whose opening of a vessel released troubles into the world. The number 55 is its permanent minor-planet designation, assigned as part of the sequence of asteroid discoveries.
The asteroid travels around the Sun in the main asteroid belt, the broad region between the orbits of Mars and Jupiter. It is not the same object as Saturn’s moon Pandora, which also takes its name from the mythological figure.
Numbering is important because astronomical names can be reused across different kinds of objects. “Pandora” can refer to an asteroid, a moon, a mythological character, and many later cultural works. The designation 55 Pandora precisely identifies the asteroid rather than Saturn’s satellite or another named object.