Ananke (moon)

Ananke is a natural satellite of the planet Jupiter. It was discovered in 1951 by astronomer Charles Kowal and is named after a figure from Greek mythology. Ananke is classified as a member of the Pasiphae group, which consists of irregular moons that orbit Jupiter in retrograde (i.e., in the opposite direction to the planet's rotation). Ananke is relatively small, with a diameter of about 20 kilometers (12 miles).