1. Forward

   • Richard H. Battin

   Announcement 23 August 2020 Pages: 127 - 127

2. Preface

   • John L. Junkins
   • Kyle T. Terry Alfriend
   • Kathleen C. Howell

   Announcement 23 August 2020 Pages: 129 - 129

3. A Class of Optimal Two-Impulse Rendezvous Using Multiple-Revolution Lambert Solutions

   • John E. Trussing

   OriginalPaper 23 August 2020 Pages: 131 - 148

4. On Low Radial Thrust Spacecraft Motion

   • Maruthi R. Akella

   OriginalPaper 23 August 2020 Pages: 149 - 161

5. Earth to Halo Transfers Using a Constrained Insertion Mode

   • Jean Albert Kechichian

   OriginalPaper 23 August 2020 Pages: 163 - 181

6. Optimal Free-Return Trajectories for Moon Missions and Mars Missions

   • A. Miele
   • T. Wang
   • S. Mancuso

   OriginalPaper 23 August 2020 Pages: 183 - 206

7. Paul Bunyan’s Brachistochrone and Tautochrone

   • John E. Hurtado

   OriginalPaper 23 August 2020 Pages: 207 - 224

8. Optimal Configurations for Rotating Spacecraft Formations

   • Steven P. Hughes
   • Christopher D. Hall

   OriginalPaper 23 August 2020 Pages: 225 - 247

9. Dynamic and Control of Spacecraft Formations: Challenges and Some Solutions

   • Kyle T. Alfriend
   • Hanspeter Schaub

   OriginalPaper 23 August 2020 Pages: 249 - 267

10. A Spectral Patching Method for Direct Trajectory Optimization

    • Fariba Fahroo
    • I. Michael Ross

    OriginalPaper 23 August 2020 Pages: 269 - 286

11. Adaptive Interplanetary Navigation Using Genetic Algorithms

    • Todd A. Ely
    • Robert H. Bishop
    • Timothy P. Crain

    OriginalPaper 23 August 2020 Pages: 287 - 303

12. Adaptation and Cooperation in Control of Multiple Robot Manipulators

    • Amit K. Sanyal
    • Ajay Verma
    • John L. Junkins

    OriginalPaper 23 August 2020 Pages: 305 - 336

13. Control of Spacecraft Subject to Actuator Failures: State-of-the-Art and Open Problems

    • Panagiotis Tsiotras
    • Viktoria Doumtchenko

    OriginalPaper 23 August 2020 Pages: 337 - 358

14. Quaternion Attitude Estimation Using Vector Observations

    • F. Landis Markley
    • Daniele Mortari

    OriginalPaper 23 August 2020 Pages: 359 - 380

15. Focal-Plane Representation of Rotations

    • Malcolm D. Shuster

    OriginalPaper 23 August 2020 Pages: 381 - 390

16. Optimal Attitude and Position Determination from Line-of-Sight Measurements

    • John L. Crassidis
    • Roberto Alonso
    • John L. Junkins

    OriginalPaper 23 August 2020 Pages: 391 - 408

17. Recursive Attitude Prediction

    • Hye-Young Kim
    • Jer-Nan Juang
    • John Junkins

    OriginalPaper 23 August 2020 Pages: 409 - 421

18. A Scrapbook of Beautiful Equations and Great Ideas

    • Richard H. Battin

    OriginalPaper 23 August 2020 Pages: 423 - 433