<page_title> Tau Ceti </page_title> <section_title> Planetary system </section_title> <table> <cell> 1.35 ± 0.09 AU <col_header> Semimajor axis (AU) </col_header> </cell> <cell> 642 ± 37 <col_header> Orbital period (days) </col_header> </cell> </table>
Tau Ceti is at a 1.35 AU with an orbital period of 642 days.