1123 Shapleya is a main belt asteroid orbiting the Sun. It makes a revolution around the Sun once every 3 years. The time it takes to complete one rotation is greater than 20 hours. It was discovered by Grigory Nikolaevich Neujmin on September 21, 1928. Its provisional designation was 1928 ST. It was named after Harlow Shapley, the American astronomer and director of Harvard Observatory.
- ^ 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.