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Updated: May 25, 2025
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Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
Published on: July 30, 2020
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Yarkovsky and YORP effects simulation on 3200 Phaethon.
Hiroki Senshu1, Hirotomo Noda2,3, Fumi Yoshida1,4
1Planetary Exploration Research Center, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan.
Summary
Asteroid 3200 Phaethon
Area of Science:
- * Planetary Science
- * Solar System Dynamics
Background:
- * Asteroid 3200 Phaethon is the parent body of the Geminid meteor shower.
- * Phaethon exhibits a highly eccentric orbit with a small perihelion distance.
Purpose of the Study:
- * To numerically investigate the thermal behavior of asteroid 3200 Phaethon.
- * To precisely evaluate the impact of thermal radiation on Phaethon's orbital and spin motion.
Main Methods:
- * Numerical modeling of thermal variation over an orbital period.
- * Analysis of the influence of spin axis orientation relative to the Sun.
Main Results:
- * Thermal effects on orbital and spin motion change sign near perihelion.
- * Canonical expressions for thermally induced momentum are not applicable to Phaethon.
- * Orbital-averaged thermal effects align with observations and prior estimates.
Conclusions:
- * Phaethon's unique orbital characteristics lead to complex thermal effects.
- * The study refines our understanding of non-gravitational forces on small bodies.
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