It’s time for the Japan Geoscience Union Meeting 2025, from 25-30 May 2025. (Sorry, we here not in Japan had a holiday.) Like the AGU and EGU, the conference deals with Earth sciences, extending all the way up to other planets (for comparison), and yes, asteroids and comets (for breadth and history). Here’s the 2025 program:
https://www.jpgu.org/meeting_e2025/program.php
Just a sampling of the relevant program highlights, in my humble opinion:
Space and Planetary Sciences (P)
P-PS02 Regolith Science
Oral Presentation May 29 PM2
Brazil-Nut Effect in a sloped bottom box Nithin Nallani
Laboratory and numerical study of the behavior of angular particles under vibration: Implications for the formation and evolution of small bodies Yuna Isobe
Energetics of P and S waves in lightly confined granular columns
Dynamic Regolith Exploration of Airless Small Bodies Through Low-Energy Multi-Impact Experiments Shogo Tachibana
Poster Presentation May 29 PM3
Resistance force from a powder layer during low-velocity impact: Variations due to porosity and ambient pressure Akiko Nakamura
Relationship between ejecta pattern and target particle size distribution Toshihiko Kadono
Comparison of Boulder Detection Performance on Asteroids Using Fine-Tuned Foundation Model and CNN Model Junho Hur
Opaque rich clasts in primitive mesosiderites naoji sugiura
Permittivity characteristics of lunar and asteroid regolith Makito Kobayashi
P-PS03 Small Solar System Bodies: New perspectives on the origin and evolution of the Solar System
Oral Presentation May 30 AM1
Quantitative evaluation of bulk density and shape of grains returned from asteroid Bennu Ryosuke Sakurai
Effects of Short-duration Solar UV Exposure on Ryugu return samples: Insights from MicrOmega and UV radiation experiments Soichiro Furukawa
Collisional probability between Bennu and the Vesta family in the inner main belt: Implication for the supply process of V-type boulders in the asteroid Bennu. Taichi Ando
Dehydration of serpentinite impactor and preservation of released water in crater Kousuke Matsubara
Thermal evolution model of porous cometary nuclei considering contraction associated with ice sublimation Hitoshi Miura
A Rogue Planet Hypothesis for the Formation of the Outer Solar System Yukun Huang
The Elemental Abundances of Ryugu: Assessment of Chemical Heterogeneities and the Nugget Effect Tetsuya Yokoyama
The fate of water in carbonaceous asteroids from excess 176Hf in Ryugu Tsuyoshi Iizuka
Constraining the source of heterogeneity between soluble and insoluble organic matter from different Hayabuasa2 return particles. Christian Potiszil
Development of identifying µm-sized organic matter in carbonaceous chondrites: A method for classification combined with machine learning RAHUL KUMAR
Effects of refractory condensates piling up outside the Jovian gap in the protosolar disk on the isotopic dichotomy of the solar system Shuji Ichikawa
Investigation of planetesimal formation and migration explaining the isotopic distribution in the Solar System Sei-ichiro WATANABE
Current Status of DESTINY+ Asteroid Flyby Mission Tomoko Arai
Spectroscopic observation of the target of Hayabusa2# 1998 KY26 ERI TATSUMI
Spectroscopic Observations of the Phoenicid Meteor Shower originating from the Next Generation Sample Return Target 289P/Blanpain Shinsuke Abe
Thermal infrared imaging of small bodies and operations of TIRI onboard Hera Naoya Sakatani
ASPECT hyperspectral imager for ESA Hera mission – Verification of instrument performance in laboratory and definition of science operations Saga Serafiia Ranttila
First results from the Asteroid Framing Cameras on ESA’s Hera mission Jean-Baptiste Vincent
Poster Presentation May 30 PM3
Thermal and Orbital Evolution of Satellite Systems around Undifferentiated Trans-Neptunian Objects: Orcus−Vanth and Salacia−Actaea Sota Arakawa
A long-term evolution model of comets to asteroids considering the blowing off of rocks Marina Tanaka
Icy Pebble Accretion and the Origin of Volatile-Rich Asteroids in the Main Belt Jinfei Yu
Numerical simulations of impact craters on a rapidly rotating top-shaped asteroid Miyamura Takanori
The Li- and O-isotope composition of Sahara 97103 EH3 chondrules: Constraining
heterogeneity in the protosolar nebula. Torii Philip Douglas-Song
Surface Geology of Asteroid Ryugu: A Comprehensive Geologic Map Trishit Ruj
Controlled Color Photomosaic map of Asteroid Ryugu Naoyuki Hirata
Investigation of a Method to Reconstruct Asteroid Shape from Hayabusa2# Flyby Observation Data Tanagi Atsuya
Candidates for main-belt asteroids with surface inhomogeneity Sunao Hasegawa
Mid-IR spectral variations depending on composition and metamorphism of ordinary chondrites for the Hera mission. Soichiro Furukawa
A Thermal Infrared Emission Spectral Morphology Study of Serpentinite – Preliminary Results Eloise Celine Brown
High Degree Products of Thermal Infrared Imager onboard Hayabusa2 Takehiko Arai
HEAT_LIGHT as a Python-based CUI Tool for Conversion of Thermal Imager Kengo Kakazu
On the near-infrared color of Karin family asteroids Shigeru Takahashi
Determination of the Spectral Type of the Near-Earth Asteroid “2024 MK” Based on Polarimetric Observations During Its Close Approach Within the Lunar Distance Kazuya Doi
Current Status of Ground-Based Optical Calibration for the DESTINY+ On-board Cameras Takaya Okamoto
Development Status of the DESTINY+ Onboard Cameras for Flyby Imaging of (3200) Phaethon and Other Small Bodies Ko Ishibashi
Progress report of development and ground calibration of DESTINY+ Dust Analyser 2025 Kobayashi Masanori
P-PS06 Planetary Sciences
Oral Presentation May 25 PM2
Impact of water supply from interplanetary dust on the isotopic composition of the Martian atmosphere Akinori Hasebe
Collisional Disruption of Core-mantle Bodies Simulating Differentiated Planetesimals with Morten or Solid Cores. Saki Hayashi
JAXA ASTEROID DATA EXPLORER 2 (JADE2) FOR ACCESSING AND RETRIEVING THE HAYABUSA2 DATA. Kazuhiro Honda
Development of QGIS plugins for Hayabusa2 data analysis Mayumi Ichikawa
The Next Generation small-body Sample Return mission: Mission status report Yuri Shimaki
Analytical estimation of the origin of C-type asteroids through scattering of planetesimals by outward-migrating giant planets Tomoki TAKEICHI
Modeling Contact Surface between Colliding Pebbles and Its Application to Comet Formation Misako Tatsuuma
Growth Limits of Icy Dust Aggregates Due to the Bouncing Barrier: Consistency with Millimeter-Wave Polarimetric Observations Haruto Oshiro
The formation environment of compound chondrules constrained by collision experiments between viscous droplets and solid spheres Sin-iti Sirono
Constraints on the evolution of the protosolar disk based on chondrule isotopic compositions Takayuki Ushikubo
Physics of dust collision in streaming instability : effect of dust size distribution Kota Wada
Revision of the theory on planetesimal accretion with fragmentation Hiroshi Kobayashi
Poster Presentation May 26 PM3
Study of the thermal properties of Pluto’s satellite Charon with ALMA Hikaru Kubota
LIDAR albedo of the asteroid Ryugu revisited Noriyuki Namiki
Laboratory simulations of rock weakening and regolith formation on asteroids due to heating Kandori Chihiro
Experimental study on impact fragmentation of icy planetesimals with thermally evolved internal structures Tatsuya Sakimura
Experimental study on impact crater formation on porous icy bodies composed of ice-rock mixtures Kotomi Noguchi
Impact angle dependence of angular momentum transfer efficiency in porous asteroids; oblique impact experiments on a porous low-intensity targets AYAKA OHNISHI
Experimental study on the remnants of the impactor and their mixing on the crater floor during high-velocity impacts on small bodies Anzu Ikoma
P-PS07 Formation and evolution of planetary materials in the Solar System
Oral Presentation May 29 AM1
All five nucleobases detected in samples from the asteroid Ryugu Toshiki Koga
Method development for IC-Orbitrap-MS analysis and the application to organophosphorus compounds in extraterrestrial samples. Yuta Hirakawa
Discovery of CHNOS molecules in asteroid Ryugu by two-dimensional gas chromatography/time-of-flight mass spectrometry Haruna Sugahara
GEMS-like materials in the aggregate of organic globules in Ryugu grain. Toru Matsumoto
Aqueous alteration environment estimation of Ryugu’s parent body through valence determination of redox sensitive elements Tomohiro OHNO
Visualization of magnetic field and interior minerals of returned sample by Hayabusa2 Yuki Kimura
Silica Minerals as Recorders of Crystallization, Thermal, and Shock Histories of Eucrites: Insights into Vesta’s Crustal Evolution Rei Kanemaru
Diversity of mid-infrared reflectance spectra of samples from asteroid Ryugu. Taiga Takase
Experimental study on the terrestrial weathering of asteroid Ryugu sample Megumi Matsumoto
Chondrule Formation via Debris Dust Bombardment on Planetesimals Sota Arakawa
Poster Presentation May 29 PM3
Non-destructive analysis and curation of Bennu samples without atmospheric exposure Ryota Fukai
Amino acid synthesis simulating hydrothermal reactions inside asteroids Hayato Kokubun
Formation of fatty acids in formose-type reaction in carbonaceous asteroids Umehara Hazuki
Development of 4He imaging technique to reveal microstructure of asteroid regolith KEN-ICHI BAJO
P-CG20 Future missions and instrumentation for space and planetary science
Oral Presentation May 29 AM1
Isotopic Measurement of Ammonia Using Cavity Ring-Down Spectroscopy (CRDS) with a 1.49 µm Laser Ryuichi Mitsuda
Development of an ultra-small gas chromatograph – mass spectrometer with a jet separator for future planetary exploration Takamitsu Iwaya
Application of ALE’s shooting star satellite technology to space exploration missions Hiromune Ishii
Development and operation of thermal infrared imager TIRI onboard Hera Naoya Sakatani
Small UV instruments for small space missions Kazuo Yoshioka
Optical performance evaluation of the Comet Hydrogen Imager onbord the Comet Interceptor Mission Yusei Mitoh
Investigation and development of FPGA coding for digital-type fluxgate magnetometer Hayato Tanaka
Development of a Compact Mass Spectrometer Capable of Separating and Quantifying CNO Ions Soichiro Seki
Poster Presentation May 29 PM3
The Next Generation small-body Sample Return mission: Bi-static radar for comet nucleus sounding – Antenna and radar transponder Atsushi Kumamoto
Concept study of optical cameras for Next Generation small bodies Sample Return (NGSR) mission Naoya Sakatani
The Comet Interceptor mission: progress in engineering/qualification model development Satoshi Kasahara
Pre-flight calibration of the ion energy mass spectrum analyzer for the Martian Moons eXploration (MMX) mission Shoichiro Yokota
M-ZZ40 International initiatives and cooperation in planetary defense
Oral Presentation May 29 PM1
Super-close Flyby Mission of Hayabusa2# Yuya Mimasu
Mission Architecture of Deep Space Constellation for Rapid Response and Frequent Asteroid Flyby Naoya Ozaki
Concept study of small-body exploration mission for planetary defense Yuri Shimaki
Thermal Imaging for Planetary Defense Missions: Hayabusa2#, Hera, and RAMSES Tatsuaki Okada
Planetary defense missions Hera and RAMSES: updates and Japanese collaborations Seiji Sugita
Apophis Kinetic Impact Test and Cratering Experiment after its Close Approach to the Earth Kevin J Walsh
Investigations of the effects of target strength and interior structure on momentum transfer by a kinetic impactor Olivier S Barnouin
Constraints on Tunguska events from pressure fluctuations observed at distant locations : Contribution of Pekeris waves Kensuke Nakajima
COIAS: Search Application for Small Solar System Bodies Seitaro Urakawa
Economic Evaluation of Planetary Diffence and Making appropriate Insurance Yosuke Alexandre Yamashiki
Achievements and Prospects of the Planetary Defense Conference (PDC) Ken-ichi Kumagai
Japan’s activities to asteroid 2024 YR4 that could collide with Earth Makoto Yoshikawa
Poster Presentation May 29 PM3
Observations and other activities by the Japan Spaceguard Association Shin-ichiro Okumura
Current status of Maebashi CubeSat Ryohei Kawasaki
How a destructive impact changes asteroid velocity Takato Nishio
Estimation of Momentum Transport Efficiency investigated with a Modified Z Model: The Case of Elliptical Targets Kosuke Kurosawa