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Poster Session: Ceres, Vesta, Pluto, and Kuiper Belt Objects

Thursday, March 16, 2023, 6:30 PM
Town Hall Exhibit Area

Viviano C. E.* Beck A. W. Combe J. -P. Denevi B. W.
Classification of VIR Spectra from HED Meteorites [#2522]
A parameterization of the 1- and 2-micron bands are calculated for a suite of HEDs and applied to a VIR scene over Antonia crater.
Ishihara Y.* Hareyama M. Ohtake M.
Vestian Reflectance Spectral Characteristic Map Based on Unsupervised Classification of Multiband Reflectance Data Obtained by DAWN Framing Camera and Its Relation of Chemical Composition and Topographic Features [#1472]
We have done unsupervised classification of vestan reflectance spectra and classified as tiny difference of 600-nm and 1-µm band at the surface.
Cheng H. C. J.* Klimczak C.
Structure and Tectonics of the Divalia Fossae on 4 Vesta [#1015]
A list of geologic constraints rejects the hypothesis that the Divalia Fossae were directly formed by the impact but points towards a spinning-related origin.
Mest S. C.* Crown D. A. Williams D. A. Buczkowski D. L. Scully J. E. C. et al.
Global Geologic Mapping of Ceres [#2788]
We present the LAMO-based geologic map of Ceres.
Zou X.-D.* Li J.-Y. Mest S. Schröder S. E. Mottola S. et al.
Possible Evolutionary Sequence of the Young Regions on Ceres [#1936]
The preliminary results of a detailed spectrophotometric study of the Haulani and the Ahuna Mons area, focusing on regolith properties and temporal evolution.
Sarkar R.* Shrivastava S. Singh P. Nathues A.
Insights into the Origin of Craters with Central Ridges on Ceres [#1957]
We explore possible causes for the formation of central ridges in certain craters on Ceres.
Nathues A.* Sarkar R. Hoffmann M. Hernandez J. Singh P. et al.
Consus Crater on Ceres: A Multi-Color Lithology in an Old Impact Feature [#1073]
Consus is a crater that despite its old age is spectrally diverse. We intend to understand this diversity to conclude on the structure of the Cerean crust.
Pasckert J. H.* Schmedemann N. Nathues A. Hiesinger H. van der Bogert C. H.
Occator's Young Resurfacing Events: Deposition of Cryovolcanic Material or Seismic Shaking [#1509]
We investigated the previously observed young resurfacing absolute model ages at the floor of Occator crater on dwarf planet Ceres on the basis of Dawn data.
Harish N.* Tuhi S. Baliyan S. Kimi K. B. Patel S. et al.
Potential Curvilinear Gullies on Ceres: Insights into the Presence of Shallow Subsurface Volatiles Subsurface Volatiles [#1929]
This study suggests the plausibility of curvilinear gullies on Ceres. Our analysis indicates that curvilinear gully-forming activity can be as young as ~26 Ma.
Strom C. A.* Fieber-Beyer S. K. Scully J. E.
Evaluation of Age and Rheology Differences as Causes of the Morphological Distinctiveness of Ahuna Mons [#1642]
Ahuna Mons appears younger and steeper than other potential cryovolcanic domes on Ceres. We investigate whether it is due to a difference in age or rheology.
Montalvo P. E.* Hirabayashi M. Fassett C. I. King D. T.
Effect of Ejecta Deposition on Surface Roughness on Ceres [#2164]
Based on a test sample, the ejecta deposit is slightly smoother than its surroundings, somewhat smoothing its proximity, and may not efficiently erase craters.
O'Brien P.* Scully J. E. C. Landis M. E. Schörghofer N. Hayne P. O.
Episodic Devolatilization from Faculae-forming Complex Craters [#2268]
We map ancient bright floor deposits and model water vapor production from ice-rich materials excavated by complex crater formation on Ceres.
Sarkar R.* Nathues A. Hoffmann M. Thangjam G. Singh P.
Distribution of Red-Sloped Spectra on Ceres Based on the DAWN Framing Camera Data [#1954]
We search for the cause of redness in the DAWN FC 7 band images of Ceres, and whether it is caused by the presence of organics.
Andrejkovičová S.* Bishop J. L. Pálková H. Rocha F.
Characterizing NH4-Smectites for Identification on Planetary Bodies [#1900]
Spectral measurement and analysis of NH4-smectites here and other NH4-bearing minerals enables detection of ammonia in our solar system.
Valadez D.* Flores E. Weber J.-M. Castillo-Rogez J. Melwani Dasawani M. et al.
Sorption and Mobilization of Organics in Ceres Analogue Mineral Systems [#2995]
Studying abiotic chemistry driven by ocean worlds minerals to Ceres.
Poppe A. R.* Fatemi S.
The Effects of Interior Conductivity on the Solar Wind Interaction with (1) Ceres [#1324]
We investigate the effects of internal conductivity structure within (1) Ceres on its interaction with the solar wind.
Cook J. C.* Emran A.
Using New Horizons Observations of Pluto as a Bootstrap to Derive Composition Maps of Triton [#2902]
We examine Triton Voyager 2/ISS observations in the context of Pluto New Horizons observations from MVIC (color images) and LEISA (NIR spectroscopy).
Loane-Billings D.* Paquin M. Di Sciullo J. Immer K. Soare R. J.
The Mystery Behind Pluto's Hot Core [#1798]
New Horizons has demonstrated Pluto to be geologically active, suggesting a warm core. Tidalism and radiogenic heating are two discussed possible hypotheses.
Moruzzi S. A.* Andrews-Hanna J. C. Schenk P.
Structure and Geophysical Evolution of Sputnik Basin on Pluto [#2270]
Quantitative modeling of present-day Sputnik basin favors a peak-ring basin subsurface structure and an uncompensated or partially uncompensated basin.
Nguyen A. L.* McGovern P. J.
The Role of Pluto’s Ocean’s Salinity in Supporting Nitrogen Ice Loads Within the Sputnik Planitia Basin [#2134]
Modeling of ocean salinity effects on shell loading at Sputnik Planitia basin on Pluto with implications for shell thickness, tectonics, and ocean densities.
McKinnon W. B.* Bland M. T. Singer K. N. Schenk P. M. Robbins S. J.
Viscous Relaxation of Oort and Edgeworth Craters on Pluto: Possible Indicators of an Epoch of Early High Heat Flow, with Statistical and Energetic Considerations [#2892]
Pluto’s heat flow through time is puzzling. Some indicators suggest low values always. We examine the best evidence for ancient, high heat flow: large craters.
Cook J. C.* Bertrand T. Cruikshank D. P. Dalle Ore C. M. Emran A. et al.
Investigations of the Origins of Pluto's Surface Dark Materials: Spectral Modeling [#2816]
We examine Pluto’s tholin content using spectral modeling of New Horizons observations of Pluto.
Kammer J. A.* Gladstone G. R. Parker J. W. Young L. A. Spencer J. R. et al.
Upper Limits on Ultraviolet Emission from (486958) Arrokoth Using New Horizons Alice Approach Observations [#1203]
Upper limits on ultraviolet airglow emission using New Horizons Alice observations of Kuiper belt object (486958) Arrokoth during the January 1, 2019 flyby.
Porter S. B.* Singer K. N. Schenk P. New Horizons GGI Team 
Shape and Albedo of Cold Classical Kuiper Belt Object Arrokoth [#1550]
Arrokoth of the Belt / Double hexagons misaligned contact / Contrast light and dark.
Stern S. A.* White O. L. Grundy W. M. Keeney B. A. Hofgartner J. D. et al.
On the Properties and Origin of Kuiper Belt Object Arrokoth’s Large Mounds [#1263]
We study the large mounds on KBO Arrokoth, reviewing their properties. We briefly discuss their origin, interpreting them as Arrokoth’s building blocks.
Grundy W. G.* Tegler S. C. Steckloff J. K. Loeffler M. J. Jasko A. V. et al.
Laboratory Measurement of Vapor Pressures of Volatile Ices [#2281]
We use a QCM system to measure vapor pressures of solid N2, CO, and CH4 at pressures from 10-7 to 10-12 bar relevant to many outer solar system environments.
Brandt P. C.* Stern S. A. Spilker L. Elliott H. Richardson J. et al.
Our Solar System and Heliosphere in the Very Local Interstellar Medium: Exploration by New Horizons, Voyager, IBEX, IMAP and a Future Interstellar Probe [#2216]
Overview of the exploration by New Horizons, Voyager, IBEX, IMAP and a future Interstellar Probe.