Adrastea . Jupiter XV - 1979J1 . Adrastea [a-DRAS-tee-uh] is the second innermost known satellite of Jupiter. Adrastea was the daughter of Jupiter and Ananke and the distributor of rewards and punishments. Adrastea and Metis lie within Jupiter's main ring and may be the source of material for the ring. ... Date of discovery . ... Orbital period (days) . ... Discovery Image . This is the discovery image (FDS 20630.53) of Adrastea. ... Credit: Calvin J. Hamilton) . ...