4786 Tatianina was discovered by N. Chernykh in 1985 at the Crimean Astrophysical Observatory.
N. Chernykh 13 August 1985 Crimean Astrophysical Obs. 
It was discovered on 13 August 1985, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. 
