Discovered 1856 May 23 by N. R. Pogson at Oxford.

Named after the Egyptian goddess. Isis (the Moon) and her brother-husband Osiris {the Sun, see planet(1923)} comprehended all nature and were the most beneficial of the Egyptian gods. (H 7)

Named by Prof. Manuel J. Johnson, director of the Radcliffe Observatory, Oxford.

The planet is probably also named for the discoverer’s daughter, Elizabeth Isis Pogson, who was a member of the Royal Astronomical Society.