<page_title> List of exoplanet extremes </page_title> <section_title> Planetary characteristics </section_title> <table> <cell> Least massive <col_header> Title </col_header> </cell> <cell> PSR B1257+12 A <col_header> Planet </col_header> </cell> </table>
PSR B1257+12 A is listed as the least massive planet.