Results 71 to 80 of about 796 (181)

The Discovery and Characterization of Earth-crossing Asteroid 2024 YR4

The Astrophysical Journal Letters
We describe observations and physical characteristics of Earth-crossing asteroid 2024 YR _4 , discovered on 2024 December 27 by the Asteroid Terrestrial-impact Last Alert System.
Bryce T. Bolin, Josef Hanuš, Larry Denneau, Roberto Bonamico, Laura-May Abron, Marco Delbo, Josef Ďurech, Robert Jedicke, Leo Y. Alcorn, Aleksandar Cikota, Swayamtrupta Panda, Henrique Reggiani   +11 more
doaj   +1 more source

Infrared Fluxes and Lightcurves of Near-Earth Objects: The Full Spitzer Sample

The Astronomical Journal
The IRAC camera on the Spitzer Space Telescope observed 2175 near-Earth objects (NEOs) during its Warm Mission phase, primarily in three large surveys, and also in a small number of a dedicated projects.
Joseph L. Hora, Alicia J. Allen, David E. Trilling, Howard A. Smith, Andrew McNeill   +4 more
doaj   +1 more source

Categorization of Spatial and Temporal Ejecta Outcomes in Binary Systems Based on Variations of the Didymos System

The Planetary Science Journal
With the increasing number of binary asteroid systems being discovered, ejecta studies must expand from solely investigating single-body systems to modeling more complex multiple-body systems. For example, the Double Asteroid Redirection Test provides an
Jennifer N. Larson, Yanga Fernandez, Gal Sarid   +2 more
doaj   +1 more source

The dependence of the asteroid rotation on their composition

9 pages, 6 ...
Dyer, T. J., Zhou, W. -H., Avdellidou, C., Delbo, M., Athanasopoulos, D., Ďurech, J., Pravec, P.   +6 more
openaire   +2 more sources

Long-term Spectral Monitoring of Active Asteroid (6478) Gault: Implications for the H Chondrite Parent Body

The Planetary Science Journal
Active asteroid (6478) Gault underwent outbursts between late 2018 and early 2019 with tails morphologically similar to the ejecta from Dimorphous following the Double Asteroid Redirection Test impact.
Adam Battle, Vishnu Reddy, Juan A. Sanchez, Neil Pearson, Benjamin N. L. Sharkey, Theodore Kareta   +5 more
doaj   +1 more source

Evidence for YORP-induced Spin Deceleration in Asteroid (433) Eros

The Astrophysical Journal
Theoretically, the Yarkovsky–O’Keefe–Radzievskii–Paddack (YORP) effect induced by thermal reemission from asteroid surfaces can either accelerate or decelerate their rotation.
Shuai Feng, Shaoming Hu, Xu Chen, Liyong Zhou, Yangbo Xu, Zehua Qi   +5 more
doaj   +1 more source

Ground-based Characterization of (98943) Torifune 2001 CC21, the Target of the Hayabusa2# Space Mission

The Planetary Science Journal
The near-Earth asteroid (98943) Torifune, previously designated 2001 CC _21 , is the flyby target of the Hayabusa2 extended mission, nicknamed Hayabusa2 # (Small Hazardous Asteroid Reconnaissance Probe (SHARP)).
Marcel M. Popescu, Eri Tatsumi, Javier Licandro, Miguel R. Alarcon, Javier Rodríguez Rodríguez, Miquel Serra-Ricart, Julia de León, Joaquín Fernandez Martin, David Morate, Gabriel N. Simion, Bogdan Alexandru Dumitru, Daniel Nicolae Berteşteanu, George Pantelimon Prodan, Masatoshi Hirabayashi   +13 more
doaj   +1 more source

Shape, Regolith Size and Thickness, SMFe0 Content, and Spectral Type of Tianwen-2 Target Asteroid (469219) Kamo‘oalewa

The Astrophysical Journal
China’s Tianwen-2 spacecraft was launched on 2025 May 29 and will arrive at the Earth quasi-satellite (469219) Kamo‘oalewa in 2026 July. We previously reported that Kamo‘oalewa develops an LL-chondrite-compositional, highly space-weathered surface. Here,
Pengfei Zhang, Guozheng Zhang, Yongxiong Zhang, Marco Fenucci, Pierre Vernazza, Jin Zhao, Yunbo Niu, Xuejin Lu, Xing Wu, Honglei Lin, Edward Cloutis, Xiaoran Yan, Xiaobin Wang, Xiaoping Zhang, Yang Li   +14 more
doaj   +1 more source

On the rotation of M-type asteroids: Statistical evidence for higher rotation rates

Icarus
Rotational dynamics of asteroids carry important information about their internal structure, collisional history and material composition. This work investigates whether M-type asteroids exhibit systematically higher rotation rates than the broader asteroid population.
Fernando Abarzuza, Noemí Pinilla-Alonso, Miquel Serra-Ricart, Santiago Iglesias Álvarez, Miguel R. Alarcon   +4 more
openaire   +2 more sources

Dimorphos’s Orbit Period Change and Attitude Perturbation due to Its Reshaping after the DART Impact

The Planetary Science Journal
On 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, Masatoshi Hirabayashi, Sabina D. Raducan, Petr Pravec, Shantanu P. Naidu, Harrison F. Agrusa, Steven Chesley, Fabio Ferrari, Martin Jutzi, Colby C. Merrill, Alex J. Meyer, Patrick Michel, Derek C. Richardson, Paul Sánchez, Peter Scheirich, Stephen R. Schwartz, Yun Zhang, Adriano Campo Bagatin, Po-Yen Liu, Andrew F. Cheng   +19 more
doaj   +1 more source