This session welcomes abstracts describing results, developments, and perspectives on the discovery or the physical and dynamical characterisation of the small bodies of our solar system using ground based and space-borne telescopic surveys. Results related to the utilisation of the stellar and solar system objects catalogs published in Gaia DR2 are especially welcomed.
This session invites also abstracts about future Gaia data releases and their perspectives (asteroid mass measurements, the detection of Yarkovsky acceleration on objects, and spin/shape properties from photometry), as well as other future surveys or missions.

This session aims to highlight the new challenges and the missing bricks needed to understand the composition of primitive bodies through laboratory works and models.

The session focuses on the origin of inorganic and organic matter in different astrophysical environments and welcomes contributions on laboratory investigations and models of parent bodies of various meteorite groups, asteroids, comets and dwarf planets such as: a) experimental work related to the dust-regolith composition; b) observation and characterization of laboratory analogues; c) models of comet formation, and interior structure of asteroids with implications for parent body processes and evolution of small bodies in our solar system.

The session will also focus on experimental, theoretical and observational topics specifically aimed to the study organic matter in planetary bodies, including a) detection and evolution of organic compounds in the interstellar medium; b) characterization and evolution of the organic matter in the primitive bodies (meteorites, comets, IDPs); c) observation and distribution of the organic matter in the protosolar disk and planetary surfaces.

This session is open to all scientists interested in the dynamical and physical properties of the asteroids Bennu and Ryugu, the targets of NASA’s OSIRIS-REx and JAXA’s Hayabusa2 missions. We invite contributions on the shape, thermal properties and processes, orbital and dynamical properties, structures and boulder/crater distributions across the surfaces of these two objects, and their links with other near-Earth objects and primitive asteroids present in the Main Belt.
In addition, we welcome contributions on results from past small body missions and concepts of future sample return missions, in terms of both science and technology. Specifically, the session is open, but not restricted, to the following topics: a) results from in situ observations of small bodies (Hayabusa, Stardust, Rosetta); b) new laboratory analyses on samples returned from past missions (e.g., Luna, Apollo, Stardust, Hayabusa); c) preparation, studies, and expected results from ongoing and future sample return missions; d) technologies and methods for sample return; e) technologies and concepts for curation facilities; e) technologies and concepts for handling, transport and analysis of returned samples.

This session welcomes contributions addressing asteroid science primarily building on data from the Dawn and other spacecraft missions, along with complementary observations from ground and space telescopic assets. Studies on the composition, geological properties, surface and internal processes of Vesta, Ceres, and other main belt asteroids in general are encouraged. We also foster studies on the formation of planetesimals, their differentiation, and further evolution, including their collisional break-up and creation of families of new generation asteroids. Contributions shedding new light on the processes driving asteroid accretion, evolution, and the information they bring to early solar system history, are also welcomed. This session aims to provide an update on the state of knowledge of the Main Belt.

This session welcomes papers about the trans-Neptunian objects and their environment, including investigations of space weathering. We encourage scientific investigations based on both space and Earth-based observations as well as theoretical and laboratory investigations. Papers based on observations and measurements obtained from within the Kuiper Belt are particularly encouraged including those focusing on 2014 MU69 (a target of the New Horizons mission). We also welcome papers about the Pluto system including investigations of the geology, composition, atmosphere, climate and environment. Papers on processes that may be active in the Pluto system are particularly encouraged and include topics such as formation of organics in Pluto’s atmosphere and surface, or seasonal/climatic models of volatile transports.
This session will also welcome abstracts devoted to studies of the Centaurs, in particular on their structure, composition, dynamics and activity patterns. We invite studies that describe observations, theory, experimental work, and future spacecraft encounters related to: (i) the onset and provenance of activity beyond Jupiter's orbit, and (ii) the nature of surface modification at these heliocentric distances (including, but not limited to, solar radiation, space weathering and impacts).

This session will promote studies on the general advancement and discussion of future perspectives in the utilization of observational and experimental techniques to characterize small bodies, their surfaces, and also the dust in the solar system. Abstracts are solicited on progresses in numerical methods to extract relevant information from images, photometry, polarimetry and spectroscopy in solid phase, reference laboratory databases, photometric modeling, interpreting features on planetary surfaces, mixing/unmixing methods, and radiative transfer in complex particulate media. Software and web service applications are welcome.

This session also aims to overview the progress in polarimetry of the solar-system and exosolar objects (including disks) and to outline future trends in polarimetric studies. We welcome presentations on recent results on polarimetric ground-based and space instrumentation, observations and computer/laboratory modeling, as well as studies on the history of polarimetry and its future prospects.

This session will celebrate the 200 year anniversary of the first use of polarimetry in astronomy by Francois Arago, when he discovered polarization in the Great Comet of 1819. Since that time polarimetry became one of the major tools in astrophysics, which provides key information on physical properties of dust/aerosol particles, surfaces, and magnetic fields in the solar system and beyond.

This session welcomes contributions on laboratory impact experiments and theoretical modelling of impacts; planetary space missions which, by imaging small bodies and planetary satellites surfaces, allow the investigation of the outcome of collisional events (Rosetta, New Horizons, OSIRIS-REx, Hayabusa2, Dawn); asteroid families that are consequence of the collisional break-up of their parent bodies; collisions among asteroids of different compositions that can lead to surface contamination and material mixing.

Contributions related to the latest observational and modelling techniques applied to meteor science will be also included. This session will discuss recent results in recording meteor activity and modelling the process of ablation enabling the direct measurement of the flux of small planetary impactors.

In this session, we invite speakers to provide the latest results on planetary defence against asteroid impact threats. This includes results from space and ground based telescopic data, results from past and ongoing missions that are relevant for planetary defence as well as updates of planned missions that will significantly contribute and enhance the scientific knowledge for the global planetary defence strategy.
We welcome abstracts on studies of capabilities needed to detect potential asteroid or comet impacts with Earth and to warn of, such threats, and then either prevent them or otherwise mitigate their possible effects. Studies from ESA, NASA and worldwide partners to discover and monitor NEOs, including asteroids and comets that pass within Earth’s vicinity are considered.
Abstracts about the ESA Hera mission (Europe’s contribution to an ambitious international planetary defence and humankind’s first mission to a binary asteroid system) and on the NASA DART mission are welcome. Contributions regarding computations of high-precision NEO orbits, continuous updating calculations of orbital parameters, close approaches, impact risks, discovery statistics, mission designs, as well as modeling of kinetic impacts are welcome in this session.

This session will welcome abstracts on studies of comets that are among the primitive building blocks of the solar system and their investigation both from remote sensing and in-situ, providing insight into how the solar system formed and its subsequent evolution. We will consider contributions on the recent and up-close study of 67/P Churyumov–Gerasimenko by the Rosetta mission, which provided observations allowing relationships to be established between the origin, structure, evolution and activity of such bodies. Papers covering a broad range of cometary science are also welcome.
This session will further explore the overlap between the comet and asteroid populations. In particular, it will cover the Main Belt Comets and other "active" asteroids, searches for ices in or on asteroids, and dynamical or physical models exploring the formation and evolution of volatile rich asteroids. It will also cover apparently asteroidal bodies in comet-like orbits (dormant or extinct comets, the "Damocloids" or "Manx" comets), active Centaurs, and asteroid activity due to recent collisions or rotational break-up, etc. Studies involving space and ground based observations, along with simulation and laboratory experiments are welcome.

Public information:
Comets are among the primitive building blocks of the Solar System and their investigation from both remote sensing and in-situ, provides insight into how the Solar System formed and its subsequent evolution. The latest results from Rosetta's investigation of 67/P Churyumov–Gerasimenko, the recent perihelion passage of 46/P Wirtanen, and intriguing activity on asteroids and extinct comets are among the subjects of this session's talks.

This session is devoted to the development of models (formal descriptions of physical phenomena), experiments (on ground and in micro-gravity), and mathematical simulations (computational methods and algorithms of solution) related to the Small Bodies (comets, KBOs, rings, asteroids, meteorites, dust, gravitational aggregates), their formation and evolution, and the instruments of their exploration.

This session will include the introduction and discussion of new and/or existing models, experimental techniques, computational methods, and the results of analytical,experimental and numerical analysis (with respect to computational methods and algorithms of solution) of various astrophysical phenomena: (i) dusty gas cometary atmospheres; (ii) volcanic activity on icy satellites (e.g. Enceladus and Io); (iii) planetary body formation (e.g. via pebbles growth), and planetesimal dynamics; (iv) investigations on granular systems applicable to the study of small bodies as gravitational aggregates, regolith surfaces, and sample-return missions; etc.

The session will as well include the simulation of instrument transfer functions (e.g. radiative transfer).

Abstracts are solicited relevant to any aspect of the above described studies and modelling.

This session is open for discussions about rings around Jupiter, Saturn, Uranus, Neptune and small outer-solar-system bodies. Theoretical and observational studies of ring morphology, dynamics, composition, origin, evolution, and interactions with nearby moons are all topics of interest. Contributions reporting on the latest results from the Cassini mission and from TNO and Centaur observations are particularly welcome.

New modelling efforts supported by observations of space probes like Mars Express or Cassini have improved our understanding of physical and chemical processes of moon formation in the Solar System. Modeling of formation has been extensively developed but several aspects are still uncertain. For instance, models of the origin of the Martian moons Phobos and Deimos are still debated. The evolution of the icy moons of giant planets is still puzzling. It motivates new mission like the NASA’s Europa Clipper and ESA’S JUICE missions to the Jovian system, as well as the JAXA’s MMX mission to the Martian system. The MMX mission will collect samples from Phobos (first sample return mission from the Martian system) and engage in a close-range exploration of Deimos too. Amongst their objectives the JUICE and Europa missions will focus on the interior of Galilean satellites and on the Jovian environment and its link with the moon system.
These missions will provide further data to answer the fundamental question how moons in our solar system formed.
The session invites contributions related to current knowledge and understanding of formation processes of solar system satellites as well as related to current missions in development, like MMX, Eurpa-Clipper or JUICE, and their approach to further our understanding of formation and evolution of natural satellites.

Shape, gravity field, orbit, tidal deformation, and rotation state are fundamental geodetic parameters of any planet, satellite, asteroid, or comet. Measurements of these parameters are prerequisites for e.g. spacecraft navigation and mapping from orbit, but also for modelling of the interior and evolution of the object. This session welcomes contributions from all aspects of planetary geodesy, including the relevant theories, observations and models.

Late posters Small Bodies (comets, KBOs, rings, asteroids, meteorites, dust) (SB)