Input (grade 9): It was discovered on 29 September 1884 by Johann Palisa and named after a nymph from Greek mythology.
Output (grade 7): Discovery and name Ida was found by Johann Palisa on September 29, 1884 in Vienna. It is named after Ida, a Cretan nymph in Greek mythology who lived on a mountain that has her name (see Mount Ida, Crete).