2121 Sevastopol, provisional designation 1971 ME, is a stony Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter.
Sevastopol is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt.
It orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,179 days).
[1] In 2010, a minor-planet moon was discovered around Sevastopol, orbiting at a distance of 26 kilometers with a diameter of 3.54 ± 0.17 km.
[3] The approved naming citation was published by the Minor Planet Center on 28 January 1983 (M.P.C.