Results 41 to 50 of about 821,143 (284)

Near to Mid-infrared Spectroscopy of (65803) Didymos as Observed by JWST: Characterization Observations Supporting the Double Asteroid Redirection Test

open access: yesThe Planetary Science Journal, 2023
The Didymos binary asteroid was the target of the Double Asteroid Redirection Test (DART) mission, which intentionally impacted Dimorphos, the smaller member of the binary system.
Andrew S. Rivkin   +19 more
doaj   +1 more source

THE PRECESSION OF ASTEROID 1620 GEOGRAPHOS

open access: yesOdessa Astronomical Publications, 2017
The frequency analysis of the fine photometric effects in the photometric observation obtained during asteroid 1620 Geographos approaching to Earth in 1994 allowed to derive the precession of asteroid spin axis.
V. V. Prokof'eva   +2 more
doaj   +1 more source

DYNAMICS AROUND AN ASTEROID MODELED AS A MASS TRIPOLE [PDF]

open access: yesRevista mexicana de astronomía y astrofísica, 2020
The orbital dynamics of a spacecraft orbiting around irregular small celestial bodies is a challenging problem. Diffculties to model the gravity field of these bodies arise from the poor knowledge of the exact shape as observed from the Earth.
L. Santos   +5 more
semanticscholar   +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

Optimal Trajectory Synthesis for Spacecraft Asteroid Rendezvous [PDF]

open access: yes, 2021
Several researchers are considering the plausibility of being able to rapidly launch a mission to an asteroid, which would fly in close proximity of the asteroid to deliver an impulse in a particular direction so as to deflect the asteroid from its ...
M. Hasan Shaheed   +3 more
core   +1 more source

Consequences of asteroid fragmentation during impact hazard mitigation

open access: yes, 2009
The consequences of the fragmentation of an Earth-threatening asteroid due to an attempted deflection are examined in this paper. The minimum required energy for a successful impulsive deflection of a threatening object is computed and compared to the ...
Vasile, M.   +9 more
core   +1 more source

Self-organising satellite constellation in geostationary Earth orbit [PDF]

open access: yes, 2015
This paper presents a novel solution to the problem of autonomous task allocation for a self-organizing satellite constellation in Earth orbit. The method allows satellites to cluster themselves above targets on the Earth’s surface.
Colombo, Camilla   +3 more
core   +1 more source

Opportunities for asteroid retrieval missions

open access: yes, 2013
Asteroids and comets are of strategic importance for science in an effort to uncover the formation, evolution and composition of the Solar System. Near-Earth Objects (NEOs) are of particular interest because of their accessibility from Earth, but also ...
Daniel García Yárnoz   +7 more
core   +1 more source

The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations

open access: yesNature Communications, 2019
During its approach to asteroid (101955) Bennu, NASA’s Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft surveyed Bennu’s immediate environment, photometric properties, and rotation state ...
C. Hergenrother   +464 more
semanticscholar   +1 more source

Regolith behavior under asteroid-level gravity conditions: low-velocity impact experiments [PDF]

open access: yesProgress in Earth and Planetary Science, 2017
The dusty regolith covering the surfaces of asteroids and planetary satellites differs in size, shape, and composition from terrestrial soil particles and is subject to environmental conditions very different from those found on Earth.
J. Brisset   +5 more
semanticscholar   +1 more source

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