(159011) Radomyshl = 2004 TX13 Radomyshl (formerly Mychek) is an ancient city in Ukraine located on the Teteriv river and first mentioned in the chronicles of 1150. The city is full of historical evidence of events at epochs ranging from the Bronze Age to the victories of the Cossack fighters.
A complete set of naming citations of the numbered minor planets is available in the Dictionary of Minor Planet Names, edited by Lutz Schmadel.