Named in memory of the father and the older brother of the astronomer K. I. Churyumov {see planet  (2627)}, friend of the discoverer. Ivan Ivanovich Churyumov (1907–1942) perished in World War II near Kharkov, and Ivan Ivanovich Churyumov (1929–1988) was a philosopher and poet. (M 19694) _ _.