<h2>AAS 97-103</h2>
<h2>DYNAMICS AND CONTROL OF CLOSE ORBITS AROUND SMALL ROTATING  BODIES                                                                               </h2>
<h4> M. Guelman, Israel Institute of Technology                                                                                                                               </h4>
<h2> Abstract </h2>
 The purpose of this work is to analyze the orbits about a rotating small celestial  body and to develop a control law to achieve stable orbits with respect to this  body.  The celestial body is rotating about a principal axis, with the rotational  velocity assumed to be constant and along the largest moment of inertia.  To take  into account the body's irregular gravitational field, use is made of the  gravitational potential approximation including the first three terms in the power  series expansion.  A closed loop guidance law is defined and guidance constants are  obtained to assure convergence to stable orbits.