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2026 57th Annual DDA Meeting Schedule
2026 57th Annual Meeting of the DDA
Chicago Illinois, USA
Oral Presentations
All times are local time (CDT, UTC-5)
Venue: Eckhardt Research Center (ERC 161)
5640 S Ellis Ave, Chicago, IL 60637
Full abstracts can be found ADD LINK.
Contributed talks are 12m+3 (for questions). Invited talks are 15m+3m or 17m+3m.
* 2026 Duncombe award
** Invited talk
For talks and posters tips, please see here, including on how to upload posters.
Sunday, June 21st |
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Opening Reception |
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DDA Committee Meeting |
Monday, June 22nd |
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Introduction and Announcements |
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Exoplanets I: Spin Orbit (Mis)alignment |
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| 9:10 | Luke Handley | The Dynamical Origin of Planet-Mass-Dependent Spin-Orbit Misalignment | |||||||
| 9:25 | Evgeni Grishin | Hot Jupiters in Old Wide Binary Systems | |||||||
| 9:40 | Diego Munoz | Explaining the Curious Orbits of Eccentric Warm Jupiters | |||||||
| 9:55 | Sabina Sagynbayeva* | Transit Photometry as a Surface Scanner: Mapping Starspots and Obliquities | |||||||
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Galaxies I: Theory |
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| 10:10 | Chris Hamilton | Galactokinetics | |||||||
| 10:25 | Uddipan Banik | Collisionless relaxation to equilibrium distributions in cold dark matter halos: origin of the Navarro-Frenk-White profile | |||||||
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Coffee Break |
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| Brouwer Prize Lecture: Robin Canup Talk Title TBD Chair: Matt Clement Slack Chair: TBA 11:05 – 12:05 |
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| Lunch 12:05 – 1:30 |
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| Satellites I: Giant planet satellites and rings Chair: Raluca Rufu Slack Chair: TBA 1:30 – 2:45 |
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| 1:30 | Ian Brunton | The assembly of the Laplace resonance at the inner edge of the circumjovian disk | |||||||
| 1:45 | Keith Dabroski | Comparing Eccentricity Excitation at Various Titan Resonances | |||||||
| 2:00 | Guangyi Zhang | Tidal Response of Gravito-Inertial Modes in Rotating Giant Planets:Resonance Locking and the Migration of Jupiter's Moons | |||||||
| 2:15 | Wen-Han Zhou | The Eclipse-Yarkovsky Effect on the Planetary Ring: Are Saturn's Rings Decreting? | |||||||
| 2:30 | Sudat Khan | Circumplanetary Disk Formation in the Adiabatic Limit | |||||||
| Coffee Break 2:45 – 3:10 |
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| Special Session in honor of the contributions of Joseph Burns (part 1) Chair: Matija Cuk Slack Chair: Christopher O'Connor 3:10 – 4:25 |
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| 3:10 | Phil Nicholson** | In Memory of Joe Burns | |||||||
| 3:30 | Jeff Cuzzi** | Joe Burns and Early Planetary Ring Dynamics | |||||||
| 3:40 | Brett Gladman** (zoom) | Irregular moon systems of the Giant Planets | |||||||
| 3:50 | Doug Hamilton** (zoom) | Sculpting Jupiter’s Ring System | |||||||
| 4:00 | Matthew Tiscareno** (zoom) | Rings, disks, and wobbly moons: A story of analogues | |||||||
| Panel Q&A #1 (Nicholson, Cuzzi, Gladman, Hamilton, Tiscareno) 4:10-4:25 |
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Coffee Break |
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| Special Session in honor of the contributions of Joseph Burns (part 2) Chair: Matt Clement Slack Chair: Ian Brunton 4:40– 5:45 |
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| 4:40 | William Bottke** | The Yarkovsky Effect and the Seeds of Discovery: Reflections on my Cornell Years with Joe Burns | |||||||
| 4:50 | Matija Cuk** | Joe Burns and the Moons of Mars | |||||||
| 5:00 | Matthew Hedman** | Planetary Rings as Perturbed Things | |||||||
| 5:10 | Maryame El Moutamid** | Small Bodies, Big Questions: How Joe Burns Shaped our View of Planetary Systems | |||||||
| 5:20 | Daniel Tamayo** | Explaining the puzzle of Saturn's moon Iapetus | |||||||
| Panel Q&A #2 (Bottke, Cuk, Hedman, El Moutamid, Tamayo) 5:30 – 5:45 |
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DDA Mentoring Event |
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Tuesday, June 23rd |
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Exoplanets II: Formation of extreme and ultra-compact systems |
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| 9:00 |
Youro Liu* |
Hot-Jupiter-Hosting Binary Systems are Preferentially Eccentric | ||
| 9:15 | Grant Weldon* | Saving Doomed Planets: Mass Loss and Angular Momentum Return Boost Hot Jupiter Survival Rates | ||
| 9:30 | Sacha Gavino | Isolated Three-Body Resonances Stabilize Extremely Compact Three-Planet Systems | ||
| 9:45 | Julia Esposito | Unified Formation Channel of Hot and Warm Jupiters via Planet-Planet Scattering | ||
| 10:00 | Konstantin Batygin | Resonances as Tracers of Planet Formation and Migration | ||
| 10:15 | Gabriel Teixeira Guimaraes | Dynamical instabilities in apsidally aligned systems | ||
| Coffee Break 10:30 – 11:00 |
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Satellites II: Earth's Moon and Beyond |
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| 11:00 | Kaustub Anand | Evolution of Martian Ring Particles under the Yarkovsky-Schach Effect | ||
| 11:15 | Thea Faridani | The Last Giant Impact: Constraining the Dynamics of the Multiple-Impact model of Lunar Formation | ||
| 11:30 | Raluca Rufu | Earth's rapid rotation and magma ocean solidification drastically limit angular momentum removal by the evection resonance after a high-angular momentum Moon-forming giant impact | ||
| 11:45 | Helena Buschermohle | Exomoons of Circumbinary Planets | ||
| Lunch 12:00 – 1:30 |
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| 2025 Rubin Prize Lecture: Sam Hadden Talk Title TBD Chair: Juliette Becker Slack Chair: TBA 1:30-2:30 |
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| Coffee Break 2:30-3:00 |
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| Small Bodies I: Debris, Rubble and Bombardment Chair: Seth Jacobson Slack Chair: Tommy Chi Ho Lau 3:00-4:00 |
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| 3:00 | Yang Shen | A machine learning model to predict proper orbital elements for main-belt asteroid family classification | ||
| 3:15 | David Minton | From Orbits to Craters: Investigating the role of collisional fragmentation of planetesimals in shaping the cratering records of terrestrial planets | ||
| 3:30 | Ben Cassese | Jointly inferring dynamical and latent parameters from 500 million asteroid observations | ||
| 3:45 | Paul Wiegert | The challenges of observing interstellar meteors | ||
| Coffee Break 4:00 – 4:15 |
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| Galaxies II: Resonances at the galactic scale Chair: TBA Slack Chair: Tucker Capps 4:15 – 5:00 |
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| 4:15 | Zachary Langford | Self-consistent dynamical modeling of the Milky Way bar with orbital frequency analysis | ||
| 4:30 | Elliot Davies | The erasure of Galactic bar resonances by dark matter subhaloes | ||
| 4:45 | Jordan Moncrieff | Consequences of mean motion resonances in AGN disks on merging black hole properties | ||
| Poster Session + Pizza 5:00 – 6:30 |
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Wednesday, June 24th |
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Special Session in honor of the contributions of Stanley Dermott |
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| 9:00 | Renu Malhotra** | In Memory of Stan Dermott | ||
| 9:20 | Carl Murray** | The Origin and Evolution of "Solar System Dynamics" | ||
| 9:40 | Apostolos Christou** | Asteroid migration in the Main Belt: Larger asteroids stay sober but smaller asteroids get drunk | ||
| 9:55 | Daniel Durda** | The Collisional Evolution of the Asteroid Belt and its Contribution to the Zodiacal Cloud | ||
| 10:10 | Mark Wyatt** | Dynamical structure in extrasolar debris disks | ||
| 10:25 | Jer-Chyi Liou** (zoom) | From Solar System Dynamics to Orbital Debris | ||
| 10:40 | Ashley Espy Kehoe** (zoom) | The search for hidden dust bands | ||
| Coffee Break 10:55 – 11:25 |
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Hierachical Triples |
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| 11:25 | Mark Dodici* | Constraining tidal dissipation rates with tightly bound stellar triples | ||
| 11:40 | Ygal Klein | Short Range Forces effect on hierarchical triple systems - revisited | ||
| 11:55 | Seth Jacobson | Triple Vision: Formation of Triple Planetesimal Systems from the Gravitational Collapse of Pebble Clouds | ||
| Lunch 12:10 – 1:30 |
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2024 Rubin Prize Lecture: Sarah Millholland |
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| Coffee Break 2:30 – 3:00 |
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| Exoplanets III: From Disks to Deserts and Valleys Chair: Christopher O'Connor Slack Chair: TBA 3:00 – 4:45 |
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| 3:00 | Ritika Sethi | Age-dependent occurrence rates of close-in sub-Neptunes | ||
| 3:15 | John Zanazzi | Forming scorched sub-Saturns through tidal shocks during high-eccentricity migration | ||
| 3:30 | Sho Shibata | Elevated Eccentricities in the Radius Valley Hint at Water-Rich Mini-Neptunes | ||
| 3:45 | Jiaru Li | Steady Warps in Protoplanetary Disks: Nonlinear Effects and Breaking | ||
| 4:00 | Antranik Sefilian | When debris disks fight back: Self-gravity suppresses planet-induced secular excitation | ||
| 4:15 | Tim Hallatt (zoom) | Revealing the Origins of Desert Dwellers via Stellar Obliquities | ||
| Coffee Break 4:30 – 4:45 |
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| IDEA Discussion 4:45 – 5:45 |
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DDA Banquet 8626 N State St, Chicago, IL 60620 (312)-612-5000 7:00 - 9:00 |
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Thursday, June 25th |
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Special Session: New probes of dark matter from innovations in stellar and galactic dynamics |
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| 9:00 | Lina Necib** |
Predicting the Weather of the Milky Way |
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| 9:18 | Newlin Weatherford** | How Dynamics in Globular Clusters Shape Stellar Streams as Dark Matter Probes | ||
| 9:36 | Robyn Sanderson** | Globular clusters and their stellar streams in cosmologically evolving galaxies | ||
| 9:54 | Adrian Price-Whelan | Orbital Torus Imaging: Using Stellar Invariants to Map Orbits and Mass in the Milky Way | ||
| 10:12 | Sukanya Chakrabarti** | Nonlinear phase space dynamics and the Gaia Snail(s) | ||
| 10:27 | Brigette Vazquez Segovia | Can pre-accretion tidal heating produce gaps, spurs and cocoons in a GD-1-like stream? | ||
| 10:42 | Ting Li | Morphological and Kinematic Signatures in Stellar Streams as Probes of Dark Matter: Views from S5 and DESI | ||
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Coffee Break |
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Planetary Dynamical Tools and Metrics |
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| 11:25 | Renu Malhotra | A metric for measuring and comparing the architectures of simulated Solar systems | ||
| 11:40 | Tjarda Boekholt | Punctuated chaos in gravitational N-body systems | ||
| 11:55 | Janosz Dewberry | GPU spin me right round: accelerated calculations of internal waves in rapid rotators | ||
| Lunch 12:10– 1:40 |
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Small Bodies II: TNO formation and dynamics |
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| 1:40 | Nathan Kaib | Observed Long-Period Comet Orbits May Show a Signature of a Recent Close Stellar Encounter | ||
| 1:55 | Rosemary Pike | The Orbital Distribution of the Hot Classical Kuiper Belt | ||
| 2:10 | Ruth Murray-Clay | An Exploration of Eyehole Libration | ||
| 2:25 | Dallin Spencer | The Impact of Secular Resonance on the Observed Structure of the Classical Belt TNOs | ||
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Coffee Break |
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Dynamics in dense clusters and nuclei |
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| 3:10 | Jordan Bruce | Dynamics of Binary Stars in Multiple-Population Globular Clusters | ||
| 3:25 | Constanza Echiburu Trujillo | Probing the Dynamics of Recoiling Black Holes with Andromeda's Nucleus | ||
| 3:40 | Miguel Angel Martinez | Walking without Direction: (Partial) Spin-Orbit Tilt Isotropization of Binary Black Holes in Dense Star Clusters | ||
| 3:55 | Brian Cook | Kinematic Heating of Globular Cluster Stellar Streams due to Internal Spin and Tidal Shocks | ||
| Coffee Break 4:10 – 4:30 |
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Exoplanets IV: Real or not? |
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| 4:30 | Daniel Yahalomi | When One Planet Looks Like Two: Degeneracies and Demographics of Cool Gas Giants with Gaia DR4 | ||
| 4:45 | Juliette Becker | Warm Jupiter Tidal Migration Can Spare Inner Planets; Hot Jupiter Tidal Migration May Not | ||
| 5:00 | Samuel Yee | Not so Lonely: Hot Jupiters with Near-Resonant Companions | ||
| 5:15 | Caleb Lammers | TTV-Not-So-Fast: Uniqueness and Degeneracy in Perturbing Planet Parameters | ||
| DDA Business Meeting All DDA Meeting attendees are welcome and encouraged to attend! Only DDA members will be able to vote. DDA officers will give reports, and future meetings and activities of the AAS Division on Dynamical Astronomy (DDA) will be discussed. 5:30 –6:15 |
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Public talk The Precision Frontier of Dark Matter Constraints from Direct Acceleration Measurments 7:00 – 8:00 |
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Friday, June 26th |
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Small Bodies III: Planetesimal Formation |
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| 9:00 | Mark Pais | Effects of Increasing Particle Resolution to Explore Debris Evolution during Terrestrial Planet Formation | ||
| 9:15 | Daniel Scheeres | Formation of Contact Binaries through the Creation of Asteroid Pairs | ||
| 9:30 | Tommy Chi Ho Lau | Formation of Multiple Dynamical Classes in the Kuiper Belt via Disk Dissipation | ||
| 9:45 | Vaibhav Chhajed | Polydispersity in gravitationally collapsing pebble clouds and its effect on final planetesimal shapes, densities, and rotation states | ||
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Coffee Break |
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Galaxies III: Evolution |
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| 10:20 | Hiroka Warren | Effect of the Galactic Disk on a Population of Stellar Streams | ||
| 10:35 | Tucker Capps | Satellite-driven acceleration of radial migration in a Milky Way–like disk | ||
| 10:50 | Carlos Jurado | Dynamical Origins of Azimuthal Metallicity Variations in the Galactic Disk | ||
| 11:05 | Hannah Woodward | Kinematic Imprints of Spiral Arm-Driven Star Formation in the FIRE Simulations | ||
| 11:20 | Kashika Mahajan | A Dynamical Clock for Triggered Star Formation: Reconstructing the Sco–Cen Superbubble | ||
| 11:35 | Lekshmi Thulasidharan | The Age--Thickness Relation as a Tracer of Merger History of Disk Galaxies | ||
| Coffee Break 11:50- 12:05 |
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Exoplanets V: Breaking Chains: New constraints and developments |
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| 12:05 | Mengrui Pan | Breaking resonant chains of Super-Earths and Mini-Neptunes driven by magnetospheric rebound effect | ||
| 12:20 | Christopher O'Connor | Intruder Alert: Breaking resonant chains with planetesimal flybys | ||
| 12:35 | Fei Dai | Resonant Chains as Possible Initial Condition for Kepler-like Planetary Systems | ||
| 12:50 | Ryan LaRusso | Breaking the resonance chains of cold Neptunes by planetesimal scattering | ||
| 1:10 | Agustin Heron | Probing the formation and disruption of resonance chains with size ordering | ||
Poster Presentations
Available Monday - Thursday |
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| Mike Alexandersen | Dynamical curiosities from the Large Inclination Distant Objects (LIDO) survey | |||
| Neil Ash | Halo tumbling and realignment induced by LMC-like encounters | |||
| Sricharan Balaji | Modeling planetary orbital evolution with stellar mass loss and equilibrium tides | |||
| Matthew Belyakov | A Perturbation Theory Approach to Stability in Neptune's Scattered Disk | |||
| Callum Bloor | Deprojection and Stellar Dynamical Modeling of Barred Galaxies | |||
| Lucas Brefka | Effects of Pebble Accretion Isolation Mass on Observable Exoplanet Properties | |||
| Lucas Brefka | Using MEGNO to preserve computational resources in N-body simulations | |||
| Stefano Casotto | The Planetary Equations and Poisson's Extended Method | |||
| Matt Clement | Assembling the secular architecture of the inner solar system | |||
| Matija Cuk | Dione-Rhea 5:3 Resonance as the source of Tethys' Inclination | |||
| Wolf Cukier | Dynamical stability of double planets in compact multiplanetary systems | |||
| Kavi Dey | Computational Methods to find Action Angle Variables in the Solar System | |||
| David Dickson | TIME to Study Binary Mass Transfer: New Horizons in 3D Hydrodynamics | |||
| Jupiter Ding | Planet-Induced Warps in Protoplanetary Disks | |||
| Mark Dodici | Hypervelocity stars produced by the disk of an active galactic nucleus | |||
| Hangci Du | A Unified Local Pattern Speed Framework for Bars and Spirals: Revealing Bar-like Structures in TNG50 Early-Type Galaxies | |||
| Maryame El Moutamid | S/2025 U 1: a new member within Uranus' densely-packed inner satellite system | |||
| Leah English | Dancing Stellar Streams in Merging Dark Matter Halos | |||
| Jamie Erak | Sometimes You Just Can't Put a Ring on It: Setting Constraints on Rings around Moons from Magnetic Fields | |||
| Jiapeng Gao | Constraining the Interior and Origin of GJ 436b Through Coupled Structural and Dynamical Evolution | |||
| David Gonzalez | BFEs for Merging Halos: Best Practices for modeling stellar streams in merger events using Basis Function Expansions | |||
| Qunfeng Jiang (virtual) | A Stability-Filter Hypothesis for Circumbinary Planets | |||
| Daniel Jontof-Hutter | Kepler-50: A pair of super Earths in close resonance perturbed by a third planet. | |||
| Katrina Kianpoor | Stability Sculpting Across Resonances: A Promising Probe of Neptune's Migration | |||
| Zachary Langford | Photodynamics.jl: differentiable multi-body transit light curves | |||
| Yurou Liu | High-Eccentricity Tidal Migration Driven by Secular Chaos in Wide-Binary Systems | |||
| Joseph Livesey | The Dearth of Nearby Outer Companions to Hot Jupiters | |||
| Nicholas Marston | Do Super-Puffs Defy Core Accretion? Population-Wide Interior Structure Constraints | |||
| Aarushi Mehrotra | Effects of Nonuniform Spacing on Stability of Compact Many-Planet Systems | |||
| Evelyn Meyersieck | Dynamical Instabilities and Planetary Engulfment in Extrasolar Systems | |||
| Kaustav Mitra | Satellite galaxy kinematics: A bold new tool for cosmological parameter inference | |||
| Allen Murray | Actively Accreting Circumbinary Disk System Evolution | |||
| Hung Nguyen | Lunar core and mantle abundances can be reproduced from a bulk-silicate Earth composition when starting from a surviving Theia core | |||
| Phil Nicholson | Enigmatic vertical structure in the Cassini Division | |||
| Tristan Parmerlee | Using Machine Learning to Model Collisional Dynamics in the Galactic Center | |||
| Rosemary Pike | The Minor Planet Center | |||
| Jonathan Pond | An Overcrowded Resonance: The 5:2 Population and Distribution. | |||
| Luis Eduardo Ramriez-Montoya | NEOs.jl: an open-source software library to study near-Earth objects | |||
| Luis Eduardo Ramriez-Montoya | Jet transport applications to the preliminary orbit determination problem | |||
| Aaron Rosengren | The Dynamical Architecture of Translunar Space | |||
| Aysu Ece Saricaoglu | Primordial Black Hole-Star Binaries as Probes of Dark Matter | |||
| Jaden Sidhu | The Interplay of Stellar Evolution and Collisions in Galactic Nuclei | |||
| Amir Siraj | Measuring the Dynamical Structure of the Distant Kuiper Belt | |||
| Joseph Spitale | Another Ambiguous B-ring Object | |||
| Alexander Stephan | Contribution of White Dwarf Formation Kicks to the Free-Floating Planet Population | |||
| Glen Stewart | Bouncing Scale Heights in Saturn's Rings Caused by Nonlinear Bending Waves | |||
| Aster Taylor |
The Kinematic Age of 3I/ATLAS and Its Implications for Early Planet Formation |
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| Mutian Wang | Early Emergence of Intra-System Mass Uniformity via Type-I Migration | |||
| Mutian Wang | An adolescent and near-resonant planetary system near the end of photoevaporation | |||
| Erick White | Simulation of Ejection Frequencies in the Sphere-Restricted Finite-Density Three-Body Problem | |||
| Nicholas Yurchak | Tracing a Possible Black Hole Merger Through Stellar Orbits at the Galactic Center | |||
| Yiqiu Zhou | Formation of Binary IMBHs through Dynamical Interactions in Globular Clusters | |||