Results 71 to 80 of about 15,403 (216)

Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release

The Astronomical Journal
Mutual perturbations between asteroids during close encounters allow the estimation of their masses using precise astrometric observations. We use all astrometry reported to the Minor Planet Center, high-precision astrometry from ESA’s Gaia Focused ...
Oscar Fuentes-Muñoz, Davide Farnocchia, Jon D. Giorgini, Ryan S. Park   +3 more
doaj   +1 more source

Defining soil: Proposals of zero‐states, active layer, and págousols (from ice parent materials) to fundamentally expand soil science

Soil Science Society of America Journal, Volume 90, Issue 2, March/April 2026.
Abstract Recent publications in soil science have reopened discussions over how soil and soil science should be defined, reflecting productive tension between historical constructs and the evolving frontiers of the discipline. While new definitions offered over the past decade provide valuable perspectives, they inevitably rely on past conventions and ...
Aaron Lee M. Daigh
wiley   +1 more source

NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos [PDF]

, 2015
We present preliminary diameters and albedos for 7,959 asteroids detected in the first year of the NEOWISE Reactivation mission. 201 are near-Earth asteroids (NEAs). 7,758 are Main Belt or Mars-crossing asteroids.
Bauer, J., Cutri, R. M., Grav, T., Kramer, E., Mainzer, A., Masiero, J., Nugent, C. R., Sonnett, S., Stevenson, R., Wright, E. L.   +9 more
core   +2 more sources

Escape of asteroids from the main belt [PDF]

Astronomy & Astrophysics, 2017
Aims. We locate escape routes from the main asteroid belt, particularly into the near-Earth-object (NEO) region, and estimate the relative fluxes for different escape routes as a function of object size under the influence of the Yarkovsky semimajor-axis drift.Methods.
Mikael Granvik, Alessandro Morbidelli, David Vokrouhlický, William F. Bottke, David Nesvorný, Robert Jedicke   +5 more
openaire   +1 more source

Phase‐Space Synchronization Driven by Moon‐Magnetosphere Coupling in Gas Giants

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract We present a new theoretical framework to describe the rapid and spatially localized loss of energetic particles in planetary radiation belts, focusing on interactions between gas giant magnetospheres and their moons. Observations show that flux depletions—known as microsignatures—often refill on timescales comparable to a single drift period,
Adnane Osmane, Elias Roussos, Peter Kollmann   +2 more
wiley   +1 more source

Expected spectral characteristics of (101955) Bennu and (162173) Ryugu, targets of the OSIRIS-REx and Hayabusa2 missions

, 2018
NASA's OSIRIS-REx and JAXA's Hayabusa2 sample-return missions are currently on their way to encounter primitive near-Earth asteroids (101955) Bennu and (162173) Ryugu, respectively.
Alí-Lagoa, V., Campins, H., de León, J., De Prá, M., DellaGiustina, D. N., Lauretta, D. S., Licandro, J., Lorenzi, V., Morate, D., Pinilla-Alonso, N., Popescu, M., Rizos, J. L.   +11 more
core   +1 more source

Early Solar Wind and Dynamo Magnetic Field Topology Predictions for (16) Psyche and Other Asteroids

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Asteroid (16) Psyche is a metal‐rich body that might record an ancient coherent magnetization if some relict crust or mantle is preserved. Herein, we use magnetohydrodynamic simulations to predict (16) Psyche's field topology for several distinct pathways: (i) an early solar wind‐induced magnetization imparted after a larger body was impacted,
Atma Anand, Jonathan Carroll‐Nellenback, Eric G. Blackman, John A. Tarduno   +3 more
wiley   +1 more source

Exploring the Interior Structure of (16) Psyche Through Basin‐Scale Collisions

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Asteroid (16) Psyche, the largest member of the M/X‐type asteroids, may be the leftover core of a differentiated planetesimal. As such (16) Psyche will be explored in detail by NASA's discovery‐class Psyche mission in 2029. This will be the first mission to orbit a metal‐rich asteroid, or any asteroid in the 100–500 km size range.
Namya Baijal, Erik Asphaug, C. Adeene Denton, Martin Jutzi, Sabina Raducan, Saverio Cambioni, Linda T. Elkins‐Tanton, Amanda Alexander   +7 more
wiley   +1 more source

Detection of Hydration on Nominally Anhydrous S-complex Main Belt Asteroids

The Planetary Science Journal
We present the results of a survey of nominally anhydrous main belt S-complex asteroids. Thirty-three observations of 29 unique asteroids were obtained using the IRTF+SpeX instrument in prism and LXD short modes.
Maggie McAdam, Cristina Thomas, Lauren McGraw, Andrew Rivkin, Joshua Emery   +4 more
doaj   +1 more source

Asteroid surface materials: Mineralogical characterizations from reflectance spectra [PDF]

Mineral assemblages analogous to most meteorite types, with the exception of ordinary chondritic assemblages, have been found as surface materials of Main Belt asteroids.
Gaffey, M. J., Mccord, T. B.
core   +1 more source