Tags: Asteroid.
22558 Mladen (provisional designation: 1998 HH3) is a main-belt minor planet. It was discovered by Peter Kolény and Leonard Kornoš at the Modra Observatory in Modra Slovakia on April 22 1998. It is named for Kolény’s father and brother both named Mladen; the father was a grammar and biology teacher at grammar school and the brother was a geographer at Comenius University in Bratislava Slovakia.