2017 AAS/AIAA Astrodynamics Specialist Conference Columbia River Gorge, Stevenson, WA August 20-24, 2017 AAS General Chair AAS Technical Chair Dr. Nathan J. Strange Dr. Jeffrey S. Parker Jet Propulsion Laboratory Advanced Space AIAA General Chair AIAA Technical Chair Dr. Daniel J. Scheeres John H. Seago University of Colorado Boulder Analytical Graphics, Inc. TABLE OF CONTENTS TABLE OF CONTENTS ............................................................................................................................ 1 GENERAL INFORMATION ...................................................................................................................... 4 REGISTRATION ..................................................................................................................................... 4 DAILY SCHEDULE OF EVENTS ................................................................................................................ 6 SPECIAL EVENTS ................................................................................................................................... 8 EARLY BIRD RECEPTION ................................................................................................................................. 8 THE GREAT AMERICAN ECLIPSE ....................................................................................................................... 8 POSTERS ON DISPLAY .................................................................................................................................... 9 STUDENT COMPETITION ................................................................................................................................. 9 PLENARY SESSION: DR. LOUIS FREIDMAN, “POLITICAL ADVOCACY FOR THE PLANETS” .......................................... 10 CONFERENCE LOCATION ..................................................................................................................... 11 CONFERENCE VENUE LAYOUT ............................................................................................................. 12 ADDITIONAL INFORMATION ............................................................................................................... 13 SPEAKER ORIENTATION ................................................................................................................................ 13 VOLUNTEERS ............................................................................................................................................. 13 PRESENTATIONS ......................................................................................................................................... 13 "NO-PAPER, NO-PODIUM" POLICY ............................................................................................................... 13 PRE-PRINTED MANUSCRIPTS ........................................................................................................................ 14 CONFERENCE PROCEEDINGS ......................................................................................................................... 14 COMMITTEE MEETINGS ............................................................................................................................... 15 CONFERENCE SCHEDULE ..................................................................................................................... 16 SESSION 1: POSTERS ................................................................................................................................... 16 SESSION 2: STUDENT DESIGN COMPETITION ................................................................................................... 23 SESSION 3: ATTITUDE CONTROL I .................................................................................................................. 27 SESSION 4: LOW-THRUST TRAJECTORY DESIGN ................................................................................................ 30 SESSION 5: SPACE SITUATIONAL AWARENESS .................................................................................................. 34 SESSION 6: TRAJECTORY DESIGN ................................................................................................................... 38 SESSION 7: ADVANCES IN SPACECRAFT DESIGN ................................................................................................ 42 SESSION 8: ATTITUDE CONTROL II ................................................................................................................. 46 SESSION 9: COLLISION AVOIDANCE ................................................................................................................ 48 SESSION 10: PLANETARY EXPLORATION .......................................................................................................... 52 SESSION 11: ATTITUDE ESTIMATION .............................................................................................................. 56 SESSION 12: ORBITAL DYNAMICS .................................................................................................................. 59 SESSION 13: SMALL BODY EXPLORATION ........................................................................................................ 62 SESSION 14: SPECIAL SESSION: OUTER PLANET EXPLORATION ............................................................................ 65 SESSION 15: EARTH ORBITERS ...................................................................................................................... 67 SESSION 16: ORBIT DETERMINATION ............................................................................................................. 71 SESSION 17: SMALL BODY MODELING ........................................................................................................... 74 SESSION 18: SPECIAL SESSION: CONSTRAINED GLOBAL TRAJECTORY OPTIMIZATION .............................................. 78 SESSION 19: CONSTELLATIONS AND FORMATIONS ............................................................................................ 82 SESSION 20: LOW-ENERGY MISSION DESIGN .................................................................................................. 85 SESSION 21: RELATIVE MOTION .................................................................................................................... 89 2017 AAS/AIAA Astrodynamics Specialist Conference Page 2 Stevenson, Washington, 20-24 August 2017 SESSION 22: SPACECRAFT GNC I .................................................................................................................. 92 SESSION 23: PROXIMITY OPERATIONS ............................................................................................................ 95 SESSION 24: SPACECRAFT GNC II ................................................................................................................. 99 SESSION 25: SPACEFLIGHT MECHANICS ........................................................................................................ 104 SESSION 26: SPECIAL SESSION: HUMAN MISSIONS BEYOND EARTH ORBIT ......................................................... 107 CONFERENCE ATTENDEE PLANNING TOOL: MONDAY ........................................................................ 110 CONFERENCE ATTENDEE PLANNING TOOL: TUESDAY ........................................................................ 112 CONFERENCE ATTENDEE PLANNING TOOL: WEDNESDAY ................................................................... 118 CONFERENCE ATTENDEE PLANNING TOOL: THURSDAY ...................................................................... 124 AUTHOR INDEX ................................................................................................................................ 131 CHAIR INDEX .................................................................................................................................... 138 Front Cover Images Top-right: The orbit of Asteroid 2016 HO3. Credit: NASA/JPL-Caltech Center: An illustration of Cassini’s grand finale. Credit: NASA/JPL-Caltech Lower-left: Parker Solar Probe, illustrated with heat shield on Sunward side. Credit: JHU/APL Lower-center: Jupiter’s great red spot, captured by the Juno spacecraft. Credit: NASA/JPL-Caltech/SwRI/MSSS/Jason Major Lower-right: ULA’s CubeSat Launch Program. Bottom: The March 7th 1970 total solar eclipse. Credit: NSO/AURA/NSF Cover design by Jeff Parker 2017 AAS/AIAA Astrodynamics Specialist Conference Page 3 Stevenson, Washington, 20-24 August 2017 2017 AAS/AIAA Astrodynamics Specialist Conference Stevenson, Washington 20-24 August 2017 GENERAL INFORMATION Welcome to the 2017 Astrodynamics Specialist Conference, hosted by the American Astronautical Society (AAS) and co-hosted by the American Institute of Aeronautics and Astronautics (AIAA), August 20 – 24, 2017. This meeting is organized by the AAS Space Flight Mechanics Committee and the AIAA Astrodynamics Technical Committee, and is held at the Skamania Lodge in Steven- son, Washington along the Columbia Gorge. Information about the conference, including registration, online program, manuscript submissions, etc., may be found here: http://www.space-flight.org/docs/2017_summer/2017_summer.html REGISTRATION Attendees to the conference are encouraged to utilize the online registration system at the confer- ence website. Registering online will provide several benefits. You will avoid the lines at the reg- istration table and you will have free access to preprints. Free access to preprints will only be available to people registering through the online system. Early Normal Walkup (On or before (On or before (After June 30, 2017) July 27, 2017) July 27, 2017) Full Registration - Member $550 $620 $720 (AAS or AIAA) Full Registration - Non-Member $650 $720 $820 (AAS or AIAA) Registration Retiree - Member $200 $270 $370 (AAS or AIAA) Registration Retiree - Non- $250 $320 $420 Member (AAS or AIAA) Registration - Student (incl. 1 yr $200 $270 $370 AAS membership) The registration fee for AAS or AIAA members is $550 (early), $620 (normal), $720 (walkup). The registration fee for AAS or AIAA member students/retiree is $200 (early), $270 (normal), $370 (walkup). Student registration includes a free one year membership to AAS. Non-members have an additional fee of $100 (full-registration) or $50 (retiree). The online registration system is programmed to accept Visa, Mastercard, Discover and American Express credit cards. Attendees may still register via the online system during the conference or in person at the regis- tration table. 2017 AAS/AIAA Astrodynamics Specialist Conference Page 4 Stevenson, Washington, 20-24 August 2017 A conference registration and check-in table will be located in the Conference Lobby of the Ska- mania Lodge and will be staffed according to the following schedule: • Sunday Aug. 20 3:00 PM – 6:00 PM • Monday Aug. 21 3:00 PM – 7:00 PM • Tuesday Aug. 22 7:30 AM – 12:00 PM • Wednesday Aug. 23 7:30 AM – 12:00 PM • Thursday Aug. 24 7:30 AM – 12:00 PM We will accept registration and payment on-site for those who have not pre-registered online, but we strongly recommend online registration (even during the conference) in order to avoid delays (see URL above). Pre-registration also gives you free access to pre-print technical papers. On-site payment by credit card will be only through the AAS website using a computer at the registration table. Any checks should be made payable to the “American Astronautical Society.” 2017 AAS/AIAA Astrodynamics Specialist Conference Page 5 Stevenson, Washington, 20-24 August 2017 DAILY SCHEDULE OF EVENTS Day Time Function Room y, 3:00pm poster area open for hanging posters Conference Lobby a 3:00pm – 6:00pm Registration Conference Lobby d0 n2 6:00pm – 9:00pm Early Bird Reception Cascade Lawn u/ S8 Day Time Function Room Before 6:00am Carpools depart for eclipse Hotel Lobby y, 9:00am – Noon Eclipse Viewing (Madras, OR) Madras, Oregon a 8:00am – 7:00pm posters on display for browsing Conference Lobby d n1 3:00pm – 7:00pm 01 Poster Session & Reception Stevenson Ballroom o2 M8/ 3:00pm – 7:00pm 02 Student Competition Stevenson Ballroom 6:30pm Plenary Speaker, Lou Friedman Stevenson Ballroom Day Time Function Room 7:30am – Noon Registration Conference Lobby 8:00am – 5:00pm posters on display for browsing Conference Lobby 8:00am – 12:10pm 03 Attitude Control I Cascade A 8:00am – 12:10pm 04 Low-Thrust Trajectory Design Stevenson C/D 8:00am – 12:10pm 05 Space Situational Awareness Stevenson B 8:00am – 12:10pm 06 Trajectory Design Stevenson A y, a 9:40am – 10:10am Morning Break d s2 12:10pm – 1:40pm Joint Astrodynamics TC Meeting Hood e2 Tu8/ 1:40pm – 5:50pm 07 Advances in Spacecraft Design Stevenson B 1:40pm – 5:50pm 08 Attitude Control II Cascade A 1:40pm – 5:50pm 09 Collision Avoidance Stevenson C/D 1:40pm – 5:50pm 10 Planetary Exploration Stevenson A 3:20pm – 3:50pm Afternoon Break 6:00pm – 8:00pm Evening Reception Cascade Lawn 7:00pm – 8:00pm Sub-Committee Meetings Stevenson 2017 AAS/AIAA Astrodynamics Specialist Conference Page 6 Stevenson, Washington, 20-24 August 2017 Day Time Function Room 7:30am – Noon Registration Conference Lobby 8:00am – 5:00pm posters on display for browsing Conference Lobby 8:00am – 12:10pm 11 Attitude Estimation Cascade A 8:00am – 12:10pm 12 Orbital Dynamics Stevenson A 8:00am – 12:10pm 13 Small Body Exploration Stevenson C/D 8:00am – 12:10pm 14 Special Session: Outer Planets Stevenson B y, a Exploration d s 9:40am – 10:10am Morning Break e n d3 12:10pm – 1:40pm AIAA Astrodynamics TC Meeting Rainier e2 W8/ 1:40pm – 5:50pm 15 Earth Orbiters Stevenson A 1:40pm – 5:50pm 16 Orbit Determination Cascade A 1:40pm – 5:50pm 17 Small Body Modeling Stevenson C/D 1:40pm – 5:50pm 18 Special Session: Constrained Global Stevenson B Trajectory Optimization 3:20pm – 3:50pm Afternoon Break 6:00pm – 8:00pm Evening Reception (Student Competition Cascade Lawn Winners Announced) Day Time Function Room 7:30am – Noon Registration Conference Lobby 8:00am – 5:00pm posters on display for browsing Conference Lobby 8:00am – 12:10pm 19 Constellations and Formations Stevenson C/D 8:00am – 12:10pm 20 Low-Energy Mission Design Stevenson B 8:00am – 12:10pm 21 Relative Motion Stevenson A y, a 8:00am – 12:10pm 22 Spacecraft GNC I Cascade A d rs4 9:40am – 10:10am Morning Break u2 h/ 12:10pm – 1:40pm AAS Astrodynamics TC Meeting Rainier T8 1:40pm – 5:50pm 23 Proximity Operations Stevenson A 1:40pm – 5:50pm 24 Spacecraft GNC II Cascade A 1:40pm – 5:50pm 25 Spaceflight Mechanics Stevenson C/D 1:40pm – 5:50pm 26 Special Session: Human Missions Stevenson B Beyond Earth Orbit 3:20pm – 3:50pm Afternoon Break The conference will adjourn Thursday at 6:00 pm. Authors: please upload your final manuscripts to the conference website by: September 8, 2017 11:59:00 pm Eastern Time. 2017 AAS/AIAA Astrodynamics Specialist Conference Page 7 Stevenson, Washington, 20-24 August 2017 SPECIAL EVENTS EARLY BIRD RECEPTION Sunday, August 20, 6:00 pm – 9:00 pm in the Cascade Lawn. THE GREAT AMERICAN ECLIPSE The path of totality for the August 21 “Great American Eclipse” will pass just south of the confer- ence location. An eclipse watching event for conference attendees will be held at the Erickson Collection museum in Madras, OR on the morning of August 21. Conference events (student competition, poster session, and keynote speaker) will resume at 4:00pm at the Skamania Lodge. 2017 AAS/AIAA Astrodynamics Specialist Conference Page 8 Stevenson, Washington, 20-24 August 2017 The eclipse starts at approximately 9:00 am local time and Eclipse viewing area at Madras is 2.5 hours from the Skamania Lodge without traf- Erickson Collection air- craft museum fic. Traffic the morning of the eclipse will be extremely unpredictable, so leaving several hours prior to 6:00 am, or on Sunday, is recommended. Madras The Erickson Collection museum is located at the Madras Airport airport: 2408 NW Berg Dr, Madras, OR. You will be di- rected to the parking as you approach the airport. The eclipse viewing area for conference attendees and their guests is adjacent to the museum. Additional information on the eclipse event is on the website including a link to traffic conditions and traffic cameras. It is advisable to have a full tank of gas, food, water and whatever supplies you need for these adventures. POSTERS ON DISPLAY Posters will be featured throughout the conference; poster authors will be attending their posters during the Monday afternoon session in the Stevenson Ballroom for questions and discussions. Posters will be rotated in and out of display throughout the conference, though the authors may not be present except Monday afternoon. Posters will be taken down by Thursday morning. STUDENT COMPETITION Mission and Spacecraft Design to Asteroid (469219) 2016 H03: The first ever Astrodynamics Specialist Conference Student Competition will be held on Monday, August 21. Details on the competition are on the conference website. Student teams will make brief presentations of their concepts starting at 4PM on Monday, followed by poster board presentations of their concepts. Their submitted designs are available for download from the online paper website. The competition is being sponsored and judged by Planetary Resources, Inc., with a 1st place prize of $3000, 2nd place prize of $2000 and 3rd place prize of $1000, checks to be payable to the student’s home universities for support of their travel. Winners will be announced on Wednes- day evening. 2017 AAS/AIAA Astrodynamics Specialist Conference Page 9 Stevenson, Washington, 20-24 August 2017 PLENARY SESSION: DR. LOUIS FREIDMAN, “POLITICAL ADVOCACY FOR THE PLANETS” Monday Aug, 21, 6:30 pm in the Stevenson Ballroom Dr. Freidman will speak on the founding of The Planetary Soci- ety, with Carl Sagan and Bruce Murray, and the political condi- tions at that time representing an existential threat to U.S. plane- tary exploration. He will recount the initiation of Society projects such as Mars Balloon and Rover development, international co- operation on missions to Halley's Comet, the attempt to fly the first solar sail and the Living Interplanetary Flight Experiment. He will also describe international cooperation advocacy by the Society including joint projects with the Soviet Union, and then Russia. Dr. Friedman is Executive Director Emeritus of the Planetary Society and co-founded The Plane- tary Society with Carl Sagan and Bruce Murray in 1980. He was Executive Director of the Society for 30 years and remained on the Board of Directors until Oct 2014. The Society is a non-profit, popular society seeking to inspire the people of Earth to explore new worlds and seek other life, through research, education and public participation. It is the largest space interest organization in the world. While at the Society he worked on the Mars Balloon development, international Mars rover testing, a Mars microphone, and the joint educational project with LEGO – Red Rover Goes to Mars. He led Cosmos 1, the attempt to fly the first solar sail and was the Co-Inventor and Prin- cipal Investigator of the Living Interplanetary Flight Experiment (LIFE) on the Russian Phobos Sample Return mission was lost in orbit following launch in Nov. 2011. This experiment was to have been the first instance of purposely sending life from Earth to interplanetary space. Friedman led the design and development of the LightSail™ spacecraft scheduled for flights 2015 and 2016. Dr. Friedman worked at the AVCO Space Systems Division from 1963-1968, on both civilian and military space programs. From 1970 to 1980 he worked on deep space missions at the Jet Propul- sion Laboratory (JPL) in Pasadena, California. He performed mission analysis and navigation sys- tem studies for pre-project definition of Mariner Venus-Mercury, Voyager and Galileo and was the program develop- ment leader for Venus Orbital Imaging Radar, which later became Magellan. He led the development and design for the Halley Comet Rendezvous-Solar Sail proposal and was the leader of the post- Viking Mars Program in the late 1970s. In 1979-80 he originated and led the In- ternational Halley Watch. He was man- ager of Advanced Planetary Studies at JPL. Dr. Friedman is the author of more than 20 technical papers on Celestial 2017 AAS/AIAA Astrodynamics Specialist Conference Page 10 Stevenson, Washington, 20-24 August 2017