Results 61 to 70 of about 131,137 (325)

Variations in color and reflectance on the surface of asteroid (101955) Bennu

open access: yesScience, 2020
The complex history of Bennu's surface The near-Earth asteroid (101955) Bennu is a carbon-rich body with a rubble pile structure, formed from debris ejected by an impact on a larger parent asteroid.
D. DellaGiustina   +61 more
semanticscholar   +1 more source

Prescribed Performance Adaptive Balance Control for Reaction Wheel-Based Inverted Pendulum-Type Cubli Rovers in Asteroid

open access: yesAerospace, 2022
This paper investigates the issue of balance control for reaction-wheeled inverted pendulum-type Cubli Rovers on asteroids, and an adaptive control scheme is proposed via the prescribed performance control technique.
He Huang   +5 more
doaj   +1 more source

Design and ballistic analysis of the mission for long-term study of the asteroid Apophis by a nanosatellite with an electric rocket propulsion system

open access: yesКосмические аппараты и технологии, 2020
The paper considers non-spherical objects with low gravitational attraction, such as asteroids, satellites of the planet and comets. We considered possibility of a mission to small bodies of the solar system of irregular shape on the example of the ...
O. L. Starinova   +2 more
doaj   +1 more source

Organic Matter in the Asteroid Ryugu: What We Know So Far

open access: yesLife, 2023
The Hayabusa2 mission was tasked with returning samples from the C-complex asteroid Ryugu (1999 JU3), in order to shed light on the formation, evolution and composition of such asteroids.
Christian Potiszil   +8 more
doaj   +1 more source

Evidence for widespread hydrated minerals on asteroid (101955) Bennu

open access: yesNature Astronomy, 2019
Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of
V. Hamilton   +458 more
semanticscholar   +1 more source

Asteroid taxonomic signatures from photometric phase curves

open access: yes, 2012
We explore the correlation between an asteroid's taxonomy and photometric phase curve using the H, G12 photometric phase function, with the shape of the phase function described by the single parameter G12.
Antti Penttilä   +40 more
core   +1 more source

MONET: The Minor Body Generator Tool at DART Lab

open access: yesSensors
Minor bodies exhibit considerable variability in shape and surface morphology, posing challenges for spacecraft operations, which are further compounded by highly non-linear dynamics and limited communication windows with Earth.
Carmine Buonagura   +2 more
doaj   +1 more source

THE CONDITIONS FOR APOPHIS 99942 APPROACHING EARTH IN 2029

open access: yesOdessa Astronomical Publications, 2009
The discovery of Apophis 99942 asteroid in 2004 raised a number of questions in the sphere of the asteroid threatening. On April 13, 2029, the asteroid is to pass at a close distance from Earth.
A. A. Tokovenko, А. А. Bazey
doaj   +1 more source

The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy

open access: yesScience, 2019
Hayabusa2 at the asteroid Ryugu Asteroids fall to Earth in the form of meteorites, but these provide little information about their origins. The Japanese mission Hayabusa2 is designed to collect samples directly from the surface of an asteroid and return
K. Kitazato   +65 more
semanticscholar   +1 more source

A Fully Autonomous On-Board GNC Methodology for Small-Body Environments Based on CNN Image Processing and MPCs

open access: yesAerospace
The increasing need for autonomy in space exploration missions is becoming more and more relevant in the design of missions to small bodies. The long communication latencies and sensitivity of the system to unplanned environmental perturbations mean ...
Pelayo Peñarroya   +3 more
doaj   +1 more source

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