<h2>AAS 97-175</h2>
<h2> CONTOUR MISSION OVERVIEW AND TRAJECTORY DESIGN                                                                                                  </h2>
<h4> R. W. Farquhar and D. Dunham, Johns Hopkins University; S-C Jen, Telos Corporation                                                                                       </h4>
<h2> Abstract </h2>
 A Discovery-class mission called the Comet Nucleus Tour (CONTOUR) is proposed.  The  baseline mission plan calls for flybys of three comets over a five-year period.   Two launch opportunities are identified; one in July 2002 and another in July 2003.   The first comet encounter would occur in November 2003 (Encke), the second in June  2006 (Schwassmann-Wachmann-3), and the third in August 2008 (d'Arrest).