Name The Year: Galileo passes within 600 miles of asteroid Ida.?

Questions

Leslie-Anne Down (in London, England), actor, born.?

The U.S. Navy launched the Vanguard 1 satellite.?

Elizabeth Ann Seton of New York was beatified. She was sainted in 1975.?

Rob Lowe, actor, famous for home-made movies, born.?

U.S. sub locates missing hydrogen bomb in Mediterranean.?