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We present an automated and probabilistic method to make prediscovery detections of near-Earth asteroids (NEAs) in archival survey images, with the goal of reducing orbital uncertainty immediately after discovery. We refit Minor Planet…

地球与行星天体物理 · 物理学 2025-10-10 Sage Li , Alex Geringer-Sameth , Nathan Golovich

Multi-epoch Spitzer Space Telescope 24 micron data is utilized from the MIPSGAL and Taurus Legacy surveys to detect asteroids based on their relative motion. These infrared detections are matched to known asteroids and rotationally averaged…

The $\delta$-Cancrid meteoroid stream forms four active meteor showers which are observable on the Earth annually during January-February and August-September. The stream's definite parent comet has not been established. We performed a…

地球与行星天体物理 · 物理学 2024-10-31 G. I. Kokhirova , M. Zhang , X. -G. Li , A. I. Zhonmuhammadi , X. Liu

Nuclear reactors provide intense sources of electron antineutrinos, characterized by few-MeV energy E and unoscillated spectral shape Phi(E). High-statistics observations of reactor neutrino oscillations over medium-baseline distances L ~…

高能物理 - 唯象学 · 物理学 2015-12-02 F. Capozzi , E. Lisi , A. Marrone

The paper analyses possible transfers of bodies from the main asteroid belt (MBA) to the Centaur region. The orbits of asteroids in the 2:1 mean motion resonance (MMR) with Jupiter are analysed. We selected the asteroids that are in…

地球与行星天体物理 · 物理学 2021-06-01 Anatolii Kazantsev , Lilia Kazantseva

Multiple terrestrial and space-based telescopes have been proposed for detecting and tracking near-Earth objects (NEOs). Detailed simulations of the search performance of these systems have used complex computer codes that are not widely…

地球与行星天体物理 · 物理学 2016-03-23 Nathan Myhrvold

In our previous study of Neptune's 4:7 mean motion resonance (MMR), we discovered that its resonant angle can only librate within a specific eccentricity ($e$) versus inclination ($i$) region, determined by a theoretical limiting curve…

地球与行星天体物理 · 物理学 2023-06-28 Jian Li , S. M. Lawler , Hanlun Lei

Within the parameter space of equation of state (EOS) of dense neutron-rich matter limited by existing constraints mainly from terrestrial nuclear experiments, we investigate how the neutron star maximum mass $M_{\rm{max}}>2.01\pm0.04$…

核理论 · 物理学 2018-05-30 Nai-Bo Zhang , Bao-An Li , Jun Xu

The number of binary asteroids in the near-Earth region might be significantly higher than expected. While Bottke and Melosh (1996) suggested that about 15% of the NEAs are binaries, as indicated from the frequency of double craters, and…

天体物理学 · 物理学 2007-05-23 David Polishook , Noah Brosch

We present the methods and results from the discovery and photometric measurement of 26 bright (VR $>$ 24 trans-Neptunian objects (TNOs) during the first year (2019-20) of the DECam Ecliptic Exploration Project (DEEP). The DEEP survey is an…

Proper elements are quasi-integrals of motion, meaning that they can be considered constant over a certain timespan, and they permit to describe the long-term evolution with a few parameters. Near-Earth objects (NEOs) generally have a large…

地球与行星天体物理 · 物理学 2022-05-18 M. Fenucci , G. F. Gronchi , M. Saillenfest

In this work we explore a new dynamical path for the delivery of low-inclination comets. In a configuration formed by an interior giant planet and an exterior massive debris disk, where the mass is accounted for by the 50 largest objects in…

地球与行星天体物理 · 物理学 2018-08-29 Marco A. Muñoz-Gutiérrez , Antonio Peimbert , Bárbara Pichardo

It is of great interest to understand the equation of state (EOS) of the neutron star (NS), whose core includes highly dense matter. However, there are large uncertainties in the theoretical predictions for the EOS of NS. It is useful to…

核理论 · 物理学 2023-07-05 Wenjie Zhou , Jinniu Hu , Ying Zhang , Hong Shen

The transneptunian objects (TNOs) trapped in mean-motion resonances with Neptune were likely emplaced there during planet migration late in the giant-planet formation process. We perform detailed modelling of the resonant objects detected…

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

In the framework of a 30-night spectroscopic survey of small near-Earth asteroids (NEAs) we present new results regarding the identification of olivine-rich objects. The following NEAs were classified as A-type using visible spectra…

地球与行星天体物理 · 物理学 2018-03-15 M. Popescu , D. Perna , M. A. Barucci , S. Fornasier , A. Doressoundiram , C. Lantz , F. Merlin , I. N. Belskaya , M. Fulchignoni

Using the Wide Field Camera for the United Kingdom Infrared Telescope, we measure the near-infrared colors of near-Earth objects (NEOs) in order to put constraints on their taxonomic classifications. The rapid-response character of our…

地球与行星天体物理 · 物理学 2016-04-06 M. Mommert , D. E. Trilling , D. Borth , R. Jedicke , N. Butler , M. Reyes-Ruiz , B. Pichardo , E. Petersen , T. Axelrod , N. Moskovitz

Context. The discovery and tracking of 2018 LA marks only the third instance in history that the parent body of a fireball has been identified before its eventual disintegration in our atmosphere. The subsequent recovery of meteorites from…

地球与行星天体物理 · 物理学 2019-01-21 C. de la Fuente Marcos , R. de la Fuente Marcos

Determining the size distribution of asteroids is key for understanding the collisional history and evolution of the inner Solar System. We aim at improving our knowledge on the size distribution of small asteroids in the Main Belt by…

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
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