Apollo–Soyuz Test Project
2228 Soyuz-Apollo, provisional designation , is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 26 kilometers in diameter. It was discovered on 19 July 1977, by Soviet–Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula. It was named after the Apollo–Soyuz Test Project.