Results 71 to 80 of about 37,088 (220)

Quantifying hazards: asteroid disruption in lunar distant retrograde orbits [PDF]

open access: yesarXiv, 2015
The Asteroid Redirect Mission (ARM) proposes to retrieve a near-Earth asteroid and position it in a lunar distant retrograde orbit (DRO) for later study, crewed exploration, and ultimately resource exploitation. During the Caltech Space Challenge, a recent workshop to design a crewed mission to a captured asteroid in a DRO, it became apparent that the ...
arxiv  

Origin of Martian Moons from Binary Asteroid Dissociation [PDF]

open access: yesarXiv, 2009
The origin of the Martian moons Deimos and Phobos is controversial. One hypothesis for their origin is that they are captured asteroids, but the mechanism requires an extremely dense martian atmosphere, and the mechanism by which an asteroid in solar orbit could shed sufficient orbital energy to be captured into Mars orbit has not been well elucidated.
arxiv  

Eclipse Prediction and Orbit Improvement for Asteroids: Theory and Application to Near Earth Asteroids [PDF]

open access: yesarXiv, 2005
Asteroids can be eclipsed by other bodies in the Solar System, but no direct observation of an asteroid eclipse has been reported to date. We describe a statistical method to predict an eclipse for an asteroid based on the analysis of the orbital elements covariance matrix.
arxiv  

Density of asteroids

open access: yesPlanetary and Space Science, 2012
163 pages, 395 figures, 6 tables -- Accepted for publication in Planetary & Space ...
openaire   +3 more sources

Editorial: Asteroid modeling: Processing and combining diverse datasets

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Dagmara Anna Oszkiewicz   +2 more
doaj   +1 more source

Space weathering of asteroids [PDF]

open access: yesarXiv, 2012
Analysis of laboratory experiments simulating space weathering optical effects on atmosphereless planetary bodies reveals that the time needed to alter the spectrum of an ordinary chondrite meteorite to resemble the overall spectral shape and slope of an S-type asteroid is about ~ 0.1 Myr.
arxiv  

Assessment of Flyby Methods as Applied to Close Encounters among Asteroids

open access: yesAerospace
Orbital flybys have been extensively studied for spacecraft missions, resulting in effective mathematical and physical models. However, these models’ applicability to natural encounters involving asteroids has not been explored.
Nicolò Stronati   +3 more
doaj   +1 more source

Earth's Minimoons: Opportunities for Science and Technology

open access: yesFrontiers in Astronomy and Space Sciences, 2018
Twelve years ago the Catalina Sky Survey discovered Earth's first known natural geocentric object other than the Moon, a few-meter diameter asteroid designated 2006 RH120. Despite significant improvements in ground-based telescope and detector technology
Robert Jedicke   +8 more
doaj   +1 more source

Global Asteroid Risk Analysis [PDF]

open access: yesarXiv, 2014
Potentially impacting asteroids were analysed for their impact risk on the Earth. To this end, the Asteroid Risk Mitigation Optimization and Research (ARMOR) tool is currently being developed. The tool's modules are described and their validation is documented.
arxiv  

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