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The Canada-France-Hawaii Legacy Survey (CFHTLS) comprising about 25 000 MegaCam images was data mined to search for serendipitous encounters of known Near Earth Asteroids (NEAs) and Potentially Hazardous Asteroids (PHAs). A total of 143…

地球与行星天体物理 · 物理学 2011-07-13 O. Vaduvescu , A. Tudorica , M. Birlan , R. Toma , M. Badea , D. Dumitru , C. Opriseanu , D. Vidican

The world astronomical image archives represent huge opportunities to time-domain astronomy sciences and other hot topics such as space defense, and astronomical observatories should improve this wealth and make it more accessible in the…

天体物理仪器与方法 · 物理学 2019-12-18 Ovidiu Vaduvescu , Lucian Curelaru , Marcel Popescu

Besides new observations, mining old photographic plates and CCD image archives represents an opportunity to recover and secure newly discovered asteroids, also to improve the orbits of Near Earth Asteroids (NEAs), Potentially Hazardous…

天体物理仪器与方法 · 物理学 2015-05-13 O. Vaduvescu , L. Curelaru , M. Birlan , G. Bocsa , L. Serbanescu , A. Tudorica , J. Berthier

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

One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to be too faint for detection in shallow surveys at future…

As part of the EURONEAR project, almost 70,000 mosaic Suprime-Cam images taken between 1999 and 2013 were data mined for about 9,800 near Earth asteroids (NEAs) known by 2013 May. Using our PRECOVERY server and the "Find Subaru CCD" tool,…

Increasing our knowledge of the orbits and compositions of Near-Earth Objects (NEOs) is important for a better understanding of the evolution of the Solar System and of life. The detection of serendipitous NEO appearances among the millions…

We report follow-up observations of 477 program Near-Earth Asteroids (NEAs) using nine telescopes of the EURONEAR network having apertures between 0.3 and 4.2 m. Adding these NEAs to our previous results we now count 739 program NEAs…

This article describes a citizen-science project conducted by the Spanish Virtual Observatory (SVO) to improve the orbits of near-Earth asteroids (NEAs) using data from astronomical archives. The list of NEAs maintained at the Minor Planet…

天体物理仪器与方法 · 物理学 2015-06-15 E. Solano , C. Rodrigo , R. Pulido , B. Carry

We report on the follow-up and recovery of 100 program NEAs, PHAs and VIs using the ESO/MPG 2.2m, Swope 1m and INT 2.5m telescopes equipped with large field cameras. The 127 fields observed during 11 nights covered 29 square degrees. Using…

The \emph{Wide-field Infrared Survey Explorer} has surveyed the entire sky at four infrared wavelengths with greatly improved sensitivity and spatial resolution compared to its predecessors, the \emph{Infrared Astronomical Satellite} and…

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

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

Massive data mining of image archives observed with large etendue facilities represents a great opportunity for orbital amelioration of poorly known virtual impactor asteroids (VIs). There are more than 1000 VIs known today; most of them…

天体物理仪器与方法 · 物理学 2020-10-07 O. Vaduvescu , L. Curelaru , M. Popescu , B. Danila , D. Ciobanu

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,…

Near-Earth asteroids (NEAs) in the 1-100 meter size range are estimated to be $\sim$1,000 times more numerous than the $\sim$15,000 currently-catalogued NEAs, most of which are in the 0.5-10 kilometer size range. Impacts from 10-100 meter…

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

The Near-Earth Object Wide-Field Infrared Survey Explorer (NEOWISE) mission continues to detect, track, and characterize minor planets. We present diameters and albedos calculated from observations taken during the second year since the…

地球与行星天体物理 · 物理学 2016-08-31 C. R. Nugent , A. Mainzer , J. Bauer , R. M. Cutri , E. A. Kramer , T. Grav , J. Masiero , S. Sonnett , E. L. Wright

The Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) spacecraft has been conducting a two-band thermal infrared survey to detect and characterize asteroids and comets since its reactivation in Dec 2013. Using the observations…

地球与行星天体物理 · 物理学 2020-02-20 Joseph R. Masiero , A. K. Mainzer , J. M. Bauer , R. M. Cutri , T. Grav , E. Kramer , J. Pittichová , S. Sonnett , E. L. Wright

We have created a new image analysis pipeline to reprocess images taken by the Near Earth Asteroid Tracking survey and have applied it to ten nights of observations. This work is the first large-scale reprocessing of images from an asteroid…

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