1. Optimal Trajectories for Secondary Payloads from Geosynchronous Transfer Orbits to the Moon

   • Scott R. Dahlke
   • Brian E. McKay

   OriginalPaper 23 August 2020 Pages: 1 - 15

2. Sample Return Missions in the Coming Decades: A Comparison of Entry, Descent, and Landing Scenarios

   • Prasun N. Desai
   • Robert A. Mitcheltree
   • F. McNeil Cheatwood

   OriginalPaper 23 August 2020 Pages: 17 - 33

3. Spacecraft Dynamics in the Vicinity of a Comet

   • D. J. Scheeres
   • F. Marzari

   OriginalPaper 23 August 2020 Pages: 35 - 52

4. The Implementation of Maintaining Constant Distance Between Satellites in Coplanar Elliptic Orbits

   • Zhaozhi Tan
   • Peter M. Bainum
   • Avaine Strong

   OriginalPaper 23 August 2020 Pages: 53 - 69

5. Requirements for Accurate Near-Real Time Atmospheric Density Correction

   • George R. Granholm
   • Ronald J. Proulx
   • Vasiliy S. Yurasov

   OriginalPaper 23 August 2020 Pages: 71 - 97

6. Optimal Nonlinear Spacecraft Attitude Control through Hamilton-Jacobi Formulation

   • Ashish Tewari

   OriginalPaper 23 August 2020 Pages: 99 - 112

7. Predictive Centroiding for Star Trackers with the Effect of Image Smear

   • Malak A. Samaan
   • Thomas C. Pollock
   • John L. Junkins

   OriginalPaper 23 August 2020 Pages: 113 - 123