Ursa Major but to avert the tragedy, Jupiter turns Arcas into a bear too and puts them both in the sky, forming Ursa Major and Ursa Minor. Callisto is Ursa Major and her son, Arcas, is Ursa Minor. In ancient times the name of the constellation was Helike, ("turning"), because it turns around the Pole. In Book Two of Lucan it is called Parrhasian Helice, since Callisto came from Parrhasia in Arcadia, where the story is set. The Odyssey notes that it is the sole constellation that never sinks below the horizon and "bathes in the Ocean's waves", so it is used
HMS Ursa (R22) refitted for service in the Far East and joined the British Pacific Fleet where she served until 1945. She then returned to the United Kingdom and paid off in 1946. During the War "Ursa" was adopted by the Borough of Hendon as part of "Warship Week". The plaque from this adoption is held by the National Museum of the Royal Navy in Portsmouth. After the Second World War "Ursa" went into reserve at Portsmouth, transferring to the Chatham reserve in 1952. During 1953 and 1954 "Ursa" was converted to a Type 15 anti-submarine frigate with the new pennant number F200.