4118 Sveta was discovered by L. V. Zhuravleva and Svetlana Savitskaya on 15 October 1982.
4118 Sveta, provisional designation 1982 TH3, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 13 kilometers (8.1 miles) in diameter. It was discovered on 15 October 1982, by Russian astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The asteroid was named after Soviet cosmonaut Svetlana Savitskaya. 15 October 1982 
