<page_title> List of minor planets: 21001–22000 </page_title> <section_title> 21601–21700 </section_title> <table> <cell> 21656 Knuth <col_header> Designation </col_header> <col_header> Permanent </col_header> </cell> <cell> August 9, 1999 <col_header> Discovery </col_header> <col_header> Date </col_header> </cell> <cell> P. Pravec, P. Kušnirák <col_header> Discovery </col_header> <col_header> Discoverer(s) </col_header> </cell> </table>
In 1999, Peter Kušnirák discovered the asteroid 21656 Knuth.