Results 71 to 80 of about 156,790 (196)
JIF (Jurnal Ilmu Fisika)Asteroids have various shapes (mostly irregular) and physical characteristics. Space missions to asteroids are becoming frequent, and a global mapping scheme is applied to collect the asteroids’ physical properties. Depending on the mission purposes, the
La Fatsa Fauzia, Dermawan Budi
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Spectroscopy of faint asteroids, satellites, and comets
The Astronomical Journal, 1980 Nineteen asteroids with orbital elements comparable to those of short-period comets and the outer Jovian satellites J6 Himalia and J7 Elara have been observed with the 228-cm telescope and image-tube spectrograph of Steward Observatory. No activity indicating cometary outgassing was detected.
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Dimorphos’s Orbit Period Change and Attitude Perturbation due to Its Reshaping after the DART Impact
The Planetary Science JournalOn 2022 September 26 (UTC), NASA's Double Asteroid Redirection Test (DART) mission achieved a successful impact on Dimorphos, the secondary component of the near-Earth binary asteroid system (65803) Didymos. Subsequent ground-based observations suggest a
Ryota Nakano +19 more
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The Astrophysical JournalIn this work, we apply a soft-sphere discrete element method (SSDEM) within the PKDGRAV N -body integrator to investigate the formation of planetesimal systems through the gravitational collapse of clouds of superparticles. Previously published numerical
Jackson T. Barnes +2 more
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High-speed Boulders and the Debris Field in DART Ejecta
The Planetary Science JournalOn 2022 September 26 the Double Asteroid Redirection Test (DART) spacecraft collided with Dimorphos, the moon of the near-Earth asteroid 65803 Didymos, in a full-scale demonstration of a kinetic impactor concept.
Tony L. Farnham +46 more
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Easily retrievable objects among the NEO population [PDF]
, 2013 Asteroids and comets are of strategic importance for science in an effort to understand 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
Sanchez Cuartielles, Joan-Pau +2 more
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Radar and Optical Observations and Physical Modeling of Binary Near-Earth Asteroid 2018 EB
The Planetary Science JournalWe report radar, photometric, and visible-wavelength spectrophotometry observations of NEA 2018 EB obtained in 2018. The radar campaign started at Goldstone (8560 MHz, 3.5 cm) on April 7, and it was followed by more extensive observations from October 5 ...
Marina Brozović +19 more
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Weywot, an Unusually Low-albedo Satellite in the Trans-Neptunian Region
The Astrophysical Journal LettersWeywot is the largest satellite of the candidate dwarf planet Quaoar, which also hosts a remarkable ring system located beyond its Roche limit—a configuration that challenges conventional understanding of ring dynamics.
Estela Fernández-Valenzuela +42 more
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The Potential Danger to Satellites due to Ejecta from a 2032 Lunar Impact by Asteroid 2024 YR4
The Astrophysical Journal LettersOn 2032 December 22, the 60 m diameter asteroid 2024 YR _4 has a 4% chance of impacting the Moon. Such an impact would release 6.5 MT TNT equivalent energy and produce a ∼1 km diameter crater.
Paul Wiegert +3 more
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Asteroid deflection and exploitation : possible synergies [PDF]
, 2011 The asteroid and cometary impact hazard has long been recognised as an important issue requiring risk assessment and contingency planning. At the same time asteroids have also been acknowledged as possible sources of raw materials for future large-scale ...
Sanchez Cuartielles, Joan-Pau +1 more
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