Results 61 to 70 of about 50,771 (302)

The Compositional Structure of the Asteroid Belt

open access: yes, 2015
The past decade has brought major improvements in large-scale asteroid discovery and characterization with over half a million known asteroids and over 100,000 with some measurement of physical characterization.
Alexander, Conel M. O'D.   +4 more
core   +1 more source

Brightness variation distributions among main belt asteroids from sparse light curve sampling with Pan-STARRS 1 [PDF]

open access: yes, 2016
The rotational state of asteroids is controlled by various physical mechanisms including collisions, internal damping and the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect. We have analysed the changes in magnitude between consecutive detections of
A. McNeill   +10 more
semanticscholar   +1 more source

Small but mighty: Impact hazards from iron Near‐Earth Objects

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Small asteroids can impact Earth unexpectedly, as demonstrated by the Chelyabinsk event in 2013. The warning times are likely to be short, and the first tools for fast hazard predictions have been developed in the last years for encounters with rocky or cometary objects, which quickly fragment in the atmosphere and cause airbursts. However, in
Robert Luther   +5 more
wiley   +1 more source

A Pre-flyby View on the Origin of Asteroid Donaldjohanson, a Target of the NASA Lucy Mission

open access: yesThe Planetary Science Journal
The NASA Lucy mission is scheduled to fly by the main-belt asteroid (52246) Donaldjohanson on 2025 April 20. Donaldjohanson (DJ hereafter) is a member of the primitive (C-type class) Erigone collisional asteroid family located in the inner main belt in ...
Simone Marchi   +5 more
doaj   +1 more source

MAIN-BELT ASTEROIDS IN THE K2 ENGINEERING FIELD OF VIEW [PDF]

open access: yes, 2015
Unlike NASA’s original Kepler Discovery Mission, the renewed K2 Mission will target the plane of the Ecliptic, observing each field for approximately 75 days.
R. Szab'o   +8 more
semanticscholar   +1 more source

Inner main belt asteroids in Slivan states [PDF]

open access: yesAstronomy & Astrophysics, 2015
J. Vraštil, D. Vokrouhlický
semanticscholar   +2 more sources

The Renaissance of Main Belt Asteroid Science

open access: yes, 2022
This is the Epilogue of the ...
Marchi, Simone   +2 more
openaire   +2 more sources

Rotation periods for small main-belt asteroids [PDF]

open access: yesAstronomy & Astrophysics, 2004
The results of new CCD observations are presented as part of the campaign we are performing in Brazil to measure rotational periods for small asteroids. The observations presented here have been acquired at the Pico dos Dias Observatory between 1997 and 2002 and result in 48 single night lightcurves for 20 asteroids, most of them Main-Belt objects with
R. Almeida   +3 more
openaire   +1 more source

Rapid terrestrial weathering of the CI1 carbonaceous chondrite find Oued Chebeika 002

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Alteration of historic CI1 meteorite falls during their curation demonstrates the susceptibility of smectite‐rich carbonaceous chondrites to terrestrial exposure. The discovery of Oued Chebeika 002 in Morocco in June 2024 presents a unique opportunity to document the earliest stages of weathering of a CI1 find.
Martin R. Lee, Jasper Glazer
wiley   +1 more source

Comparative Mid-infrared Spectroscopy of Dark, Primitive Asteroids: Does Shared Taxonomic Class Indicate Shared Silicate Composition?

open access: yesThe Planetary Science Journal
Primitive asteroids with low albedos and red slopes in the visible and near-infrared (VNIR) are found in both the main belt and the Jupiter Trojan clouds.
Oriel A. Humes   +3 more
doaj   +1 more source

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