Results 11 to 20 of about 156,790 (196)

Satellite Formation around the Largest Asteroids

The Astrophysical Journal Letters
Satellites around large asteroids are preferentially found among those with the most rapid rotation and elongated shape. The taxonomic statistics are similarly skewed; in total, 13 asteroids larger than 100 km are known to have satellites, but none have ...
Kevin J. Walsh, Ronald-Louis Ballouz, Harrison F. Agrusa, Josef Hanus̆, Martin Jutzi, Patrick Michel   +5 more
doaj   +3 more sources

On the consequences of a fragmentation due to a NEO mitigation strategy [PDF]

, 2008
The fragmentation of an Earth threatening asteroid as a result of a hazard mitigation mission is examined in this paper. The minimum required energy for a successful impulsive deflection of a threatening object is computed and compared with the energy ...
Vasile, M., Sanchez Cuartielles, Joan-Pau, Vasile, Massimiliano, Sanchez Cuartielles, J.P., Radice, G., Sanchez, J.P., Radice, Gianmarco   +6 more
core   +8 more sources

Mirror formation control in the vicinity of an asteroid [PDF]

, 2008
Two strategies are presented for the positioning and control of a spacecraft formation designed to focus sunlight onto a point on the surface of asteroid, thereby sublimating the material and ejecting debris creating thrust.
Vasile, M., Vasile, Massimiliano, Christie Maddock, Gianmarco Radice, Maddock, Christie, Maddock, C., Radice, G., Radice, Gianmarco, Massimiliano Vasile   +8 more
core   +8 more sources

Consequences of asteroid fragmentation during impact hazard mitigation [PDF]

, 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., Sanchez Cuartielles, Joan-Pau, Vasile, Massimiliano, Sanchez Cuartielles, J.P., G. Radice, M. Vasile, Radice, G., J. P. Sanchez, Sanchez, J.P., Radice, Gianmarco   +9 more
core   +4 more sources

On the stability of the satellites of asteroid 87 Sylvia [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
he triple asteroidal system (87) Sylvia is composed of a 280-km primary and two small moonlets named Romulus and Remus (Marchis et al 2005). Sylvia is located in the main asteroid belt. The satellites are in nearly equatorial circular orbits around the primary.
Winter, O. C., Boldrin, L. A. G., Vieira Neto, E., Vieira Martins, Roberto, Giuliatti Winter, S. M., Gomes, R. S., Marchis, Franck, Descamps, Pascal   +7 more
openaire   +4 more sources

A smart cloud approach to asteroid deflection [PDF]

, 2011
This paper presents a novel idea for the successful deflection of asteroids. Adapted initially from the kinematic impactor approach, this new concept – Smart Cloud – combines the relative benefits of the ion beam shepard in providing a large cloud of ...
Vasile, Massimiliano, Gibbings, Alison
core   +3 more sources

Passive sorting of asteroid material using solar radiation pressure [PDF]

, 2013
Understanding dust dynamics in asteroid environments is key for future science missions to asteroids and, in the long-term, also for asteroid exploitation.
Sanchez Cuartielles, Joan-Pau, Garcia Yarnoz, Daniel, McInnes, Colin   +2 more
core   +6 more sources

Opportunities for asteroid retrieval missions [PDF]

, 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, Sanchez Cuartielles, Joan-Pau, Colin R. McInnes, Garcia Yarnoz, Daniel, McInnes, Colin, Yárnoz, Daniel García, Joan-Pau Sanchez, McInnes, Colin R.   +7 more
core   +1 more source

Magnetic field measurements during the ROSETTA flyby at asteroid (21) Lutetia [PDF]

, 2011
On July 10, 2010, the ROSETTA spacecraft performed a flyby at asteroid (21) Lutetia at a solar distance of 2.72 AU. The spacecraftâ  asteroid distance at closest approach was 3120 km.
Glassmeier, K.H., J. Müller, Auster, H., Richter, I., Glassmeier, K., Auster, H. U., Mueller, J., Motschmann, U., H.U. Auster, McKenna-Lawlor, S., C.M. Carr, S. McKenna-Lawlor, Carr, C., Carr, C.M., U. Motschmann, I. Richter, C. Koenders, Koenders, C., Müller, J., K.H. Glassmeier   +19 more
core   +1 more source

Predicting Performance of Hall Effect Ion Source Using Machine Learning

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This study introduces HallNN, a machine learning tool for predicting Hall effect ion source performance using a neural network ensemble trained on data generated from numerical simulations. HallNN provides faster and more accurate predictions than numerical methods and traditional scaling laws, making it valuable for designing and optimizing Hall ...
Jaehong Park, Guentae Doh, Dongho Lee, Youngho Kim, Changmin Shin, Su‐Jin Shin, Young‐Chul Ghim, Sanghoo Park, Wonho Choe   +8 more
wiley   +1 more source