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International and U.S. strategies and protocols have identified the need to develop rapid-response spacecraft reconnaissance capabilities as a priority to advance planetary defense readiness. A space-based reconnaissance response is…

Catalina Sky Survey (CSS) is a major survey of Near-Earth Objects (NEOs). In a recent work, we used CSS observations from 2005-2012 to develop a new population model of NEOs (NEOMOD). CSS's G96 telescope was upgraded in 2016 and detected…

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,…

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

A concept for an Impact Mitigation Preparation Mission, called Don Quijote, is to send two spacecraft to a Near-Earth Asteroid (NEA): an Orbiter and an Impactor. The Impactor collides with the asteroid while the Orbiter measures the…

Earth and Planetary Astrophysics · Physics 2011-07-22 Stephen D. Wolters , Andrew J. Ball , Nigel Wells , Christopher Saunders , Neil McBride

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…

Synthetic tracking (ST) has emerged as a potent technique for observing fast-moving near-Earth objects (NEOs), offering enhanced detection sensitivity and astrometric accuracy by avoiding trailing loss. This approach also empowers small…

Instrumentation and Methods for Astrophysics · Physics 2024-01-09 Chengxing Zhai , Michael Shao , Navtej Saini , Philip Choi , Nez Evans , Russell Trahan , Kutay Nazli , Max Zhan

Accurate astrometry is crucial for determining orbits of near-Earth-asteroids (NEAs) and therefore better tracking them. This paper reports on a demonstration of 10 milliarcsecond-level astrometric precision on a dozen NEAs using the Pomona…

The cryogenic WISE mission in 2010 was extremely sensitive to asteroids and not biased against detecting dark objects. The albedos of 428 Near Earth Asteroids (NEAs) observed by WISE during its fully cryogenic mission can be fit quite well…

Earth and Planetary Astrophysics · Physics 2016-09-21 Edward L. Wright , Amy Mainzer , Joseph Masiero , Tommy Grav , James Bauer

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…

Our previous model (NEOMOD2) for the orbital and absolute magnitude distribution of Near Earth Objects (NEOs) was calibrated on the Catalina Sky Survey observations between 2013 and 2022. Here we extend NEOMOD2 to include visible albedo…

We describe a new iteration method to estimate asteroid coordinates, which is based on the subpixel Gaussian model of a discrete object image. The method operates by continuous parameters (asteroid coordinates) in a discrete observational…

Numerical modeling has long suggested that gravitationally-bound (or so-called rubble-pile) near-Earth asteroids (NEAs) can be destroyed by tidal forces during close and slow encounters with terrestrial planets. However, tidal disruptions…

Earth and Planetary Astrophysics · Physics 2024-01-09 Mikael Granvik , Kevin J. Walsh

Collisional threats posed by Near-Earth Objects (NEOs) are increasingly being confirmed by National Aeronautics and Space Administration (NASA) and European Space Agency (ESA) sky surveys. Efforts to develop tools to perform modelling,…

Earth and Planetary Astrophysics · Physics 2021-07-14 Jude Muthini , Geoffrey O. Okeng'o

Sky survey telescopes and powerful targeted telescopes play complementary roles in astronomy. In order to investigate the nature and characteristics of the motions of very faint objects, a flexibly-pointed instrument capable of high…

Instrumentation and Methods for Astrophysics · Physics 2021-11-18 Fabien Malbet , Céline Boehm , Alberto Krone-Martins , Antonio Amorim , Guillem Anglada-Escudé , Alexis Brandeker , Frédéric Courbin , Torsten Enßlin , Antonio Falcão , Katherine Freese , Berry Holl , Lucas Labadie , Alain Léger , Gary Mamon , Barbara Mcarthur , Alcione Mora , Mike Shao , Alessandro Sozzetti , Douglas Spolyar , Eva Villaver , Ummi Abbas , Conrado Albertus , João Alves , Rory Barnes , Aldo Stefano Bonomo , Hervé Bouy , Warren Brown , Vitor Cardoso , Marco Castellani , Laurent Chemin , Hamish Clark , Alexandre Correia , Mariateresa Crosta , Antoine Crouzier , Mario Damasso , Jeremy Darling , Melvyn Davies , Antonaldo Diaferio , Morgane Fortin , Malcolm Fridlund , Mario Gai , Paulo Garcia , Oleg Gnedin , Ariel Goobar , Paulo Gordo , Renaud Goullioud , David Hall , Nigel Hambly , Diana Harrison , David Hobbs , Andrew Holland , Erik Høg , Carme Jordi , Sergei Klioner , Ariane Lançon , Jacques Laskar , Mario Lattanzi , Christophe Le Poncin-Lafitte , Xavier Luri , Daniel Michalik , André Moitinho de Almeida , Ana Mourão , Leonidas Moustakas , Neil Murray , Matthew Muterspaugh , Micaela Oertel , Luisa Ostorero , Jordi Portell , Jean-Pierre Prost , Andreas Quirrenbach , Jean Schneider , Pat Scott , Arnaud Siebert , Antonio Da Silva , Manuel Silva , Philippe Thébault , John Tomsick , Wesley Traub , Miguel de Val-Borro , Monica Valluri , Nicholas Walton , Laura Watkins , Glenn White , Lukasz Wyrzykowski , Rosemary Wyse , Yoshiyuki Yamada

We determine the possible detection rate of asteroids with the Bering mission. In particular we examine the outcome of the Bering mission in relation to the populations of Near-Earth Asteroids and main belt asteroids. This is done by…

Astrophysics · Physics 2007-05-23 Rene Michelsen , Henning Haack , Anja C. Andersen , John L. Joergensen

Bright fireballs or bolides are caused by meteoroids entering the Earth's atmosphere at high speed. On 2013 February 15, a superbolide was observed in the skies near Chelyabinsk, Russia. Such a meteor could be the result of the decay of an…

Earth and Planetary Astrophysics · Physics 2013-12-17 C. de la Fuente Marcos , R. de la Fuente Marcos

On 2013 February 15 a small asteroid rammed against the atmosphere above the region of Chelyabinsk in Russia, producing the most powerful superbolide since the Tunguska event in 1908. Lacking proper astrometric observations, the pre-impact…

Earth and Planetary Astrophysics · Physics 2015-10-08 C. de la Fuente Marcos , R. de la Fuente Marcos , S. J. Aarseth

We studied the Near-Earth Asteroid (NEA) candidates posted on the Minor Planet Center's Near-Earth Object Confirmation Page (NEOCP) between years 2013 and 2016. Out of more than 17,000 NEA candidates, while the majority became either new…

Earth and Planetary Astrophysics · Physics 2018-06-12 Peter Vereš , Matthew J. Payne , Matthew J. Holman , Davide Farnocchia , Gareth V. Williams , Sonia Keys , Ian Boardman

In this article, theory-based analytical methodologies of astrophysics employed in the modern era are suitably operated alongside a test research-grade telescope to image and determine the orbit of a near-earth asteroid from original…

Earth and Planetary Astrophysics · Physics 2021-09-16 Muhammad Farae , Cameron Woo , Anka Hu