The asteroid named Pandora is 55 Pandora.
55 Pandora is a large main-belt asteroid discovered by the American astronomer George Mary Searle on September 10, 1858. Its name comes from Pandora, the figure in Greek mythology whose opened jar releases troubles into the world.
The asteroid travels around the Sun in the main asteroid belt between Mars and Jupiter. Like other numbered minor planets, “55” records its position in the sequence of asteroid discoveries, while “Pandora” is its assigned name. The number and name together identify the object precisely.
55 Pandora should not be confused with 2 Pallas, 4 Vesta, or 16 Psyche, which are also famous named asteroids but are separate bodies. It is also unrelated to the fictional moon Pandora in Avatar. Astronomical names frequently draw on mythology, but the same name can appear in several unrelated cultural works.