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We present revised near-infrared albedo fits of 2835 Main Belt asteroids observed by WISE/NEOWISE over the course of its fully cryogenic survey in 2010. These fits are derived from reflected-light near-infrared images taken simultaneously…

Earth and Planetary Astrophysics · Physics 2015-06-22 Joseph R. Masiero , T. Grav , A. K. Mainzer , C. R. Nugent , J. M. Bauer , R. Stevenson , S. Sonnett

We report measured spectral properties for more than 1000 NEOs, representing>5% of the currently discovered population. Thermal flux detected below 2.5 {\mu}m allows us to make albedo estimates for nearly 50 objects, including two comets.…

The lightcurves of asteroids are essential for determining their physical characteristics, including shape, spin, size, and surface composition. However, most asteroids are missing some of these basic physical parameters due to lack of…

Earth and Planetary Astrophysics · Physics 2024-01-30 Xiaoyun Xu , Xiaobing Wang , Karri Muinonen , Antti Penttil , Nanping Luo , Shenghong Gu , Leilei Sun , Fukun Xu , Yisi Liu , Yue Xiang , Dongtao Cao , Jianhua Wang

Rectified diameters and albedo estimates of 1517 main belt asteroid selected from the IRAS and MSX asteroid photometry catalogues are derived from updated infrared thermal models, the Standard Thermal Model (STM) and the Near Earth Asteroid…

Earth and Planetary Astrophysics · Physics 2015-05-19 Erin Lee Ryan , Charles E. Woodward

We examine the angular distributions of near-Earth objects (NEOs) which are often regarded as uniform. The apparent distribution of the longitude of ascending node, $\Omega$, is strongly affected by well-known seasonal effects in the…

Earth and Planetary Astrophysics · Physics 2015-06-17 Youngmin JeongAhn , Renu Malhotra

We report on our search for genetically related asteroids amongst the near-Earth object (NEO) population - families of NEOs akin to the well known main belt asteroid families. We used the technique proposed by Fu et al. (2005) supplemented…

Earth and Planetary Astrophysics · Physics 2012-07-05 Eva Schunova , Mikael Granvik , Robert Jedicke , Giovanni Gronchi , Richard Wainscoat , Shinsuke Abe

The study of asteroid families has provided tremendous insight into the forces that sculpted the main belt and continue to drive the collisional and dynamical evolution of asteroids. The identification of asteroid families within the NEO…

Astrophysics · Physics 2009-11-11 Hai Fu , Robert Jedicke , Daniel D. Durda , Ronald Fevig , James V. Scotti

Space missions to NEOs are being planned at all major space agencies, and recently a manned mission to an NEO was announced as a NASA goal. Efforts to find and select suitable targets (plus backup targets) are severely hampered by our lack…

Small aperture telescopes provide the opportunity to conduct high frequency, targeted observations of near-Earth Asteroids that are not feasible with larger facilities due to highly competitive time allocation requirements. Observations of…

Earth and Planetary Astrophysics · Physics 2021-07-30 Samuel L. Jackson , Ulrich C. Kolb , Simon F. Green

The near-Earth object (NEO) population is a window into the original conditions of the protosolar nebula, and has the potential to provide a key pathway for the delivery of water and organics to the early Earth. In addition to delivering…

Earth and Planetary Astrophysics · Physics 2018-08-01 S. Ieva , E. Dotto , E. Mazzotta Epifani , D. Perna , A. Rossi , M. A. Barucci , A. Di Paola , R. Speziali , M. Micheli , E. Perozzi , M. Lazzarin , I. Bertini

Information about the spin state of asteroids is important for our understanding of the dynamical processes affecting them. However, spin properties of asteroids are known for only a small fraction of the whole population. To enlarge the…

Earth and Planetary Astrophysics · Physics 2018-09-19 Josef Durech , Josef Hanus , Victor Ali-Lagoa

We introduce a new technique to estimate the comet nuclear size frequency distribution (SFD) that combines a cometary activity model with a survey simulation and apply it to 150 long period comets (LPC) detected by the Pan-STARRS1…

The precise astrometric observation of small near-Earth objects (NEOs) is an important observational research topic in the astrometric discipline, which greatly promotes multidisciplinary research, such as the origin and evolution of the…

Instrumentation and Methods for Astrophysics · Physics 2021-12-01 Yigong Zhang , Jiancheng Wang , Jie Su , Xiangming Cheng , Zhenjun Zhang

Asteroid shape inversion using photometric data has been a key area of study in planetary science and astronomical research.However, the current methods for asteroid shape inversion require extensive iterative calculations, making the…

Earth and Planetary Astrophysics · Physics 2025-04-02 YiJun Tang , ChenChen Ying , ChengZhe Xia , XiaoMing Zhang , XiaoJun Jiang

We perform high fidelity simulations of a wide-field telescopic survey searching for Near-Earth Objects (NEO) larger than 140\,m, focusing on the observational and detection model, detection efficiency and accuracy. As a test survey we…

Earth and Planetary Astrophysics · Physics 2017-06-30 Peter Vereš , Steven R. Chesley

Asteroids with low orbital perihelion distances experience extreme heating from the Sun that can modify their surfaces and trigger non-typical activity mechanisms. These objects are generally difficult to observe from ground-based…

Earth and Planetary Astrophysics · Physics 2024-04-24 Joseph R. Masiero , Yuna G. Kwon , Dar W. Dahlen , Frank J. Masci , Amy K. Mainzer

Dynamical models of the asteroid delivery from the main belt suggest that the current impact flux of diameter D>10 km asteroids on the Earth is 0.5-1 per Gyr. Studies of the Near-Earth Asteroid (NEA) population find a much higher flux, with…

Earth and Planetary Astrophysics · Physics 2018-01-10 D. Nesvorny , F. Roig

We have combined the NEOWISE and Sloan Digital Sky Survey data to study the albedos of 24,353 asteroids with candidate taxonomic classifications derived using Sloan photometry. We find a wide range of moderate to high albedos for candidate…

Earth and Planetary Astrophysics · Physics 2015-05-30 A. Mainzer , J. Masiero , T. Grav , J. Bauer , D. J. Tholen , R. S. McMillan , E. Wright , T. Spahr , R. M. Cutri , R. Walker , W. Mo , J. Watkins , E. Hand , C. Maleszewski

Wide Field Survey Telescope (WFST), with a powerful sky survey capability in the northern hemisphere, will play an important role in asteroid searching and monitoring. However, WFST is not a telescope dedicated to near-Earth asteroids…

Earth and Planetary Astrophysics · Physics 2025-02-21 Jun-Qiang Lu , Lu-Lu Fan , Min-Xuan Cai , Shao-Han Wang , Bing-Xue Fu , Xu Kong , Qing-Feng Zhu

While of order a million asteroids have been discovered, the number in rigorously controlled samples that have precise orbits and rotation periods, as well as well-measured colors, is relatively small. In particular, less than a dozen…

Earth and Planetary Astrophysics · Physics 2015-06-12 Andrew Gould , Jennifer C. Yee
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