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Updated: Feb 22, 2026

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

A binary main-belt comet.

Jessica Agarwal¹, David Jewitt^2,3, Max Mutchler⁴

¹Max Planck Institute for Solar System Research, Justus-von-Liebig Weg 3, 37077 Göttingen, Germany.

|September 22, 2017

Summary

This summary is machine-generated.

The asteroid 288P is a unique binary main-belt comet, exhibiting comet-like activity driven by sublimation. This discovery highlights the significant role of sublimation torques in shaping binary asteroid orbits.

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Area of Science:

Astronomy
Planetary Science
Solar System Dynamics

Background:

Asteroids evolve through collisions and rotational disruptions, forming binaries and releasing dust.
Main-belt comets display transient activity due to sublimating excavated volatiles.
Sublimation torques influence active comet spin rates and can cause nucleus splitting.

Purpose of the Study:

To investigate the nature of the active main-belt asteroid 288P.
To determine if 288P is a binary system and understand its activity mechanism.
To explore the implications of sublimation torques on binary asteroid evolution.

Main Methods:

Observational astronomy to study asteroid 288P's activity and characteristics.
Analysis of orbital dynamics and physical properties of the asteroid components.
Comparison with known asteroid binaries and cometary activity models.

Main Results:

Asteroid 288P is confirmed to be a binary main-belt comet.
It exhibits unusual characteristics: wide separation, near-equal component size, and high eccentricity.
Observations strongly support sublimation as the driver of 288P's activity.

Conclusions:

288P represents a novel type of binary asteroid system.
Sublimation is a key factor in its observed activity.
Sublimation torques are significant in the orbital evolution of binary asteroids.