Tags: Asteroid.
21776 Kryszczyńska (provisional designation: 1999 RE221) is a main-belt minor planet. It was discovered through the Lowell Observatory Near-Earth-Object Search at the Anderson Mesa Station in Coconino County Arizona on September 5 1999. It is named after Agnieszka Kryszczyńska a planetary scientist at Adam Mickiewicz University in Poznań Poland.