This tree is called "Yuzefin Oak". One of the officially recognized (on July 6, 2010) National Trees of Ukraine. This tree (once a contender for the “title” of Ukraine’s oldest oak) is in a bad condition, only two of its branches still having leaves.
The girth of the tree, measured at a height of 1.30 m, is 7.90 m (Jul 1, 2009, Kiev Society for Environmental Culture). Its height is around 27 m (Jul 1, 2009, measurement method unknown, Kiev Society for Environmental Culture).