1131 Porzia is a Mars-crossing asteroid orbiting the Sun. It makes a revolution around the Sun once every 3 years. It completes one rotation once every 4 hours. It was discovered by Karl Wilhelm Reinmuth on September 10, 1929. It was named for a character in Shakespeare's play Julius Caesar. Its provisional designation was 1929 RO.
- ^ a b "JPL Small-Body Database Browser". Retrieved October 17, 2007.
- ^ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer. ISBN 3-540-00238-3.