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The Near-Earth Object (NEO) Surveyor mission is a NASA observatory designed to discover and characterize near-Earth asteroids and comets. The mission's primary objective is to find the majority of objects large enough to cause severe…

With the NEOWISE portion of the \emph{Wide-field Infrared Survey Explorer} (WISE) project, we have carried out a highly uniform survey of the near-Earth object (NEO) population at thermal infrared wavelengths ranging from 3 to 22 $\mu$m,…

We estimate the total population of near-Earth objects (NEOs) in the Solar System, using an extensive, `Solar System to pixels' fake-asteroid simulation to debias detections of real NEOs by the ATLAS survey. Down to absolute magnitudes…

The Near Earth Object Surveyor mission has a requirement to find two-thirds of the potentially hazardous asteroids larger than 140 meters in size. In order to determine the mission's expected progress toward this goal during design and…

地球与行星天体物理 · 物理学 2023-10-20 Joseph R. Masiero , Dar W. Dahlen , Amy K. Mainzer , William F. Bottke , Jennifer C. Bragg , James. M. Bauer , Tommy Grav

We have used Minor Planet Center data and tools to explore the discovery circumstances and properties of the currently known population of over 10,000 NEAs, and to quantify the challenges for follow-up from ground-based telescopes. The…

地球与行星天体物理 · 物理学 2015-05-27 J. L. Galache , C. L. Beeson , K. K. McLeod , M. Elvis

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…

地球与行星天体物理 · 物理学 2017-06-30 Peter Vereš , Steven R. Chesley

In the last decades Near-Earth Objects (NEOs) have become very important targets to study, since they can give us clues to the formation, evolution and composition of the Solar System. In addition, they may represent either a threat to…

地球与行星天体物理 · 物理学 2014-09-24 S. Ieva , E. Dotto , D. Perna , M. A. Barucci , F. Bernardi , S. Fornasier , F. De Luise , E. Perozzi , A. Rossi , J. R. Brucato

Automated asteroid detection routines set requirements on the number of detections, signal-to-noise ratio, and the linearity of the expected motion in order to balance completeness, reliability, and time delay after data acquisition when…

地球与行星天体物理 · 物理学 2018-08-08 Joseph R. Masiero , E. Redwing , A. K. Mainzer , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , C. R. Nugent , S. Sonnett , E. L. Wright

Determining the size and orbital distribution of the population of near-Earth asteroids (NEAs) is the focus of intense research, with the most recent models converging to a population of approximately $1000$ NEAs larger than 1 km and up to…

地球与行星天体物理 · 物理学 2016-12-21 Pasquale Tricarico

Studies on Near Earth Asteroids (NEAs) throw light on discoveries, identification, orbit prediction and civil alert capabilities, including potential asteroid impact hazards. Due to various new observational programs, the discovery rate of…

地球与行星天体物理 · 物理学 2016-07-21 J. Rukmini , G. Raghavendra , S. A. Ahmed , D. Shanti Priya , Syeda Azeem Unnisa

We propose a low-cost robotic optical survey aimed at $1-300$ m Near Earth Objects (NEO) based on four state-of-the-art telescopes having extremely wide field of view. The small Near-Earth Asteroids (NEA) represent a potential risk but also…

天体物理仪器与方法 · 物理学 2014-01-29 P. Vereš , J. Tóth , R. Jedicke , J. Tonry , L. Denneau , R. Wainscoat , L. Kornoš , J. Šilha

Near Earth Objects (NEOs) are a transient population of small bodies with orbits near or in the terrestrial planet region. They represent a mid-stage in the dynamical cycle of asteroids and comets, which starts with their removal from the…

Near-Earth Objects (NEOs) are asteroids, comets and meteoroids in heliocentric orbits with perihelion below 1.3 au. Similarly to the population of the Main Asteroid Belt, NEOs are primordial bodies and their study can improve our…

地球与行星天体物理 · 物理学 2024-07-01 Elena Fantino , Roberto Flores , Giuseppe Donnarumma , David Canales , Kathleen C. Howell

The catalog of km-sized near-Earth objects (NEOs) is nearly complete. Typical impact monitoring analyses search for possible impacts over the next 100 years and none of the km-sized objects represent an impact threat over that time…

地球与行星天体物理 · 物理学 2023-06-28 Oscar Fuentes-Muñoz , Daniel J. Scheeres , Davide Farnocchia , Ryan S. Park

We have performed a detailed survey simulation of the LSST performance with regards to near-Earth objects (NEOs) using the project's current baseline cadence. The survey shows that if the project is able to reliably generate linked sets of…

地球与行星天体物理 · 物理学 2016-06-08 Tommy Grav , Amy Mainzer , Tim Spahr

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…

地球与行星天体物理 · 物理学 2024-04-24 Joseph R. Masiero , Yuna G. Kwon , Dar W. Dahlen , Frank J. Masci , Amy K. Mainzer

In the past two decades an increasing interest in discovering Near Earth Objects has been noted in the astronomical community. Dedicated surveys have been operated for data acquisition and processing, resulting in the present discovery of…

天体物理仪器与方法 · 物理学 2019-01-10 T. Stefanut , V. Bacu , C. Nandra , D. Balasz , D. Gorgan , O. Vaduvescu

Close encounters of Near Earth Objects (NEOs) with large asteroids are a possible source of systematic errors in trajectory propagations and asteroid mitigation. It is, thus, necessary to identify those large asteroids that have to be…

地球与行星天体物理 · 物理学 2015-07-15 Anatoliy Ivantsov , Siegfried Eggl , Daniel Hestroffer , William Thuillot , Pini Gurfil

Near Earth Asteroids (NEAs) and dead comets comprise the vast majority of the population of Near Earth Objects (NEOs) detected to date. Less is known of their physical properties than of the much larger population of main-belt asteroids.…

天体物理仪器与方法 · 物理学 2010-12-14 Mark Trueblood , Larry Lebofsky , Robert Crawford

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…

地球与行星天体物理 · 物理学 2025-02-21 Jun-Qiang Lu , Lu-Lu Fan , Min-Xuan Cai , Shao-Han Wang , Bing-Xue Fu , Xu Kong , Qing-Feng Zhu
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