Claim: 2121 Sevastopol, a stony Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, was discovered by D. Higgins and company on July 23, 2010.
Evidence: It was discovered on 27 June 1971, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. 
2121 Sevastopol T. Smirnova 27 June 1971