11252 Laërtes, provisional designation 1973 SA2, is a carbonaceous Jupiter trojan from the Greek camp, approximately 42 kilometers in diameter. It was discovered on 19 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten on photographic plates taken by Dutch–American astronomer Tom Gehrels at the U.S. Palomar Observatory in California. As an anomaly, the asteroid did not receive a typical survey designation, although it was discovered in 1973, when the discovering trio of astronomers were conducting their second Palomar–Leiden Trojan survey (T-2).