What observatory is XXX associated with?
2131 Mayall
2131 Mayall (1975 RA) is an inner main-belt asteroid discovered on September 3, 1975 by A. R. Klemola at the Lick Observatory and named in honor of Nicholas U. Mayall (1906--1993), director of the Kitt Peak National Observatory during 1960--1971, who also worked at Lick for many years.
Lick Observatory