Nongravitational Forces in Planetary Systems

Nongravitational forces play surprising and, sometimes, centrally important roles in shaping the motions and properties of small planetary bodies. In the solar system, the morphologies of comets, the delivery of meteorites, and the shapes and dynamics of asteroids and binaries are all affected by no...

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Main Author: David Jewitt
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Planetary Science Journal
Subjects:
Online Access:https://doi.org/10.3847/PSJ/ad9824
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author David Jewitt
author_facet David Jewitt
author_sort David Jewitt
collection DOAJ
description Nongravitational forces play surprising and, sometimes, centrally important roles in shaping the motions and properties of small planetary bodies. In the solar system, the morphologies of comets, the delivery of meteorites, and the shapes and dynamics of asteroids and binaries are all affected by nongravitational forces. In exoplanetary systems and debris disks, nongravitational forces affect the lifetimes of circumstellar particles and feed refractory debris to the photospheres of the central stars. Unlike the gravitational force, which is a simple function of the well-known separations and masses of bodies, the nongravitational forces are frequently functions of poorly known or even unmeasurable physical properties. Here, we present order-of-magnitude descriptions of nongravitational forces, with examples of their application.
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spelling doaj-art-1201779d2b2f435d827ade7cbced4b352025-01-16T07:23:24ZengIOP PublishingThe Planetary Science Journal2632-33382025-01-01611210.3847/PSJ/ad9824Nongravitational Forces in Planetary SystemsDavid Jewitt0Department of Earth, Planetary and Space Sciences, University of California at Los Angeles , Los Angeles, CA 90095-1567, USA ; djewitt@gmail.comNongravitational forces play surprising and, sometimes, centrally important roles in shaping the motions and properties of small planetary bodies. In the solar system, the morphologies of comets, the delivery of meteorites, and the shapes and dynamics of asteroids and binaries are all affected by nongravitational forces. In exoplanetary systems and debris disks, nongravitational forces affect the lifetimes of circumstellar particles and feed refractory debris to the photospheres of the central stars. Unlike the gravitational force, which is a simple function of the well-known separations and masses of bodies, the nongravitational forces are frequently functions of poorly known or even unmeasurable physical properties. Here, we present order-of-magnitude descriptions of nongravitational forces, with examples of their application.https://doi.org/10.3847/PSJ/ad9824Small Solar System bodiesAsteroid satellitesLong period cometsMain-belt cometsShort period cometsDebris disks
spellingShingle David Jewitt
Nongravitational Forces in Planetary Systems
The Planetary Science Journal
Small Solar System bodies
Asteroid satellites
Long period comets
Main-belt comets
Short period comets
Debris disks
title Nongravitational Forces in Planetary Systems
title_full Nongravitational Forces in Planetary Systems
title_fullStr Nongravitational Forces in Planetary Systems
title_full_unstemmed Nongravitational Forces in Planetary Systems
title_short Nongravitational Forces in Planetary Systems
title_sort nongravitational forces in planetary systems
topic Small Solar System bodies
Asteroid satellites
Long period comets
Main-belt comets
Short period comets
Debris disks
url https://doi.org/10.3847/PSJ/ad9824
work_keys_str_mv AT davidjewitt nongravitationalforcesinplanetarysystems