Results 1 to 10 of about 76 (50)

The Increasingly Strange Polarimetric Behavior of the Barbarian Asteroids

open access: yesThe Planetary Science Journal, 2023
Polarization phase-curve measurements provide a unique constraint on the surface properties of asteroids that are complementary to those from photometry and spectroscopy and have led to the identification of the “Barbarian” asteroids as a class of ...
Joseph R. Masiero   +4 more
doaj   +1 more source

Thermophysical Investigation of Asteroid Surfaces. II. Factors Influencing Grain Size

open access: yesThe Planetary Science Journal, 2022
Asteroid surfaces are subjected to mechanical weathering processes that result in the development and evolution of regolith. Two proposed mechanisms—impact bombardment and thermal fatigue—have been proposed as viable and dominant weathering processes ...
Eric M. MacLennan, Joshua P. Emery
doaj   +1 more source

Stereophotoclinometry for OSIRIS-REx Spacecraft Navigation

open access: yesThe Planetary Science Journal, 2023
We summarize a decade of effort by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission team to build up the unique capabilities, processes, and procedures required to accomplish the ...
Coralie D. Adam   +20 more
doaj   +1 more source

Optimization of Future Multifilter Surveys Toward Asteroid Characterization

open access: yesThe Astronomical Journal, 2023
The aim of this paper is to find a set of photometric passbands that will give optimal results for spectrophotometric classification of asteroids into taxonomic types and classes.
Hanna Klimczak   +6 more
doaj   +1 more source

An Efficient Numerical Approach to Modeling the Effects of Particle Shape on Rubble-pile Dynamics

open access: yesThe Planetary Science Journal, 2023
We present an approach for the inclusion of nonspherical constituents in high-resolution N -body discrete element method (DEM) simulations. We use aggregates composed of bonded spheres to model nonspherical components.
Julian C. Marohnic   +4 more
doaj   +1 more source

Near-IR Spectral Observations of the Didymos System: Daily Evolution Before and After the DART Impact Indicates that Dimorphos Originated from Didymos

open access: yesThe Planetary Science Journal, 2023
Ejecta from Dimorphos following the DART mission impact significantly increased the brightness of the Didymos–Dimorphos system, allowing us to examine subsurface material.
David Polishook   +6 more
doaj   +1 more source

INVESTIGATIONS OF SURFACES OF ATMOSPHERE LESS BODIES USING SCATTERED SOLAR LIGHT

open access: yesOdessa Astronomical Publications, 2017
Sunlight scattered by surfaces of atmosphere less bodies carry information about details of these surfaces. Burns and Tedesco in 1979 published formula for estimations of dimensions of details located on surfaces of asteroids.
V. V. Prokofjeva-Mikhailovskaja   +1 more
doaj   +1 more source

OSIRIS-APEX: An OSIRIS-REx Extended Mission to Asteroid Apophis

open access: yesThe Planetary Science Journal, 2023
The Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) spacecraft mission characterized and collected a sample from asteroid (101955) Bennu.
Daniella N. DellaGiustina   +53 more
doaj   +1 more source

Constraining the Limitations of NEATM-like Models: A Case Study with Near-Earth Asteroid (285263) 1998 QE2

open access: yesThe Planetary Science Journal, 2023
Near-Earth asteroids (NEAs) are a key test bed for investigations into planet formation, asteroid dynamics, and planetary defense initiatives. These studies rely on understanding NEA sizes, albedo distributions, and regolith properties.
Samuel A. Myers   +6 more
doaj   +1 more source

Sm and Gd Isotopic Shifts in Eucrites and Implications for Their Cosmic-Ray Exposure History

open access: yesThe Astrophysical Journal, 2023
The isotopic compositions of Sm and Gd in eight eucrites—five from a desert, Dar al Gani (DaG) 380, DaG 391, DaG 411, DaG 443, and DaG 480, and three from nondesert areas, Juvinas, Millibillillie, and Stannern—were determined to understand the cosmic-ray
Takaharu Saito   +2 more
doaj   +1 more source

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