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Every year, a few metre-sized meteoroids impact the atmosphere of the Earth. Most (if not all) of them are undetectable before the impact. Therefore, predicting where and how they will fall seems to be an impossible task. In this letter we…

Earth and Planetary Astrophysics · Physics 2019-05-08 Jorge I. Zuluaga , Pablo A. Cuartas-Restrepo , Jhonatan Ospina , Mario Sucerquia

The study of small ($<$300 m) near-Earth objects (NEOs) is important because they are more closely related than larger objects to the precursors of meteorites that fall on Earth. Collisions of these bodies with Earth are also more frequent.…

The Global Meteor Network (GMN) utilizes highly sensitive low-cost CMOS video cameras which run open-source meteor detection software on Raspberry Pi computers. Currently, over 450 GMN cameras in 30 countries are deployed. The main goal of…

The orbital evolution of more than 22000 Jupiter-crossing objects under the gravitational influence of planets was investigated. We found that the mean collision probabilities of Jupiter-crossing objects (from initial orbits close to the…

Astrophysics · Physics 2009-11-07 S. I. Ipatov , J. C. Mather

On 2020 September 18 US Government sensors detected a bolide with peak bolometric magnitude of -19 over the western Pacific. The impact was also detected by the Geostationary Lightning Mapper (GLM) instrument on the GOES-17 satellite and…

Earth and Planetary Astrophysics · Physics 2023-04-05 David L. Clark , Paul A. Wiegert , Peter G. Brown , Denis Vida , Aren Heinze , Larry Denneau

Predictions of the 2018 Draconid activity at the Earth and the Sun-Earth L1 and L2 Lagrange points are presented. Numerical simulations of the meteoroids' ejection and evolution from comet 21P/Giacobini-Zinner are performed with a careful…

Earth and Planetary Astrophysics · Physics 2018-10-17 Auriane Egal , Paul Wiegert , Peter G. Brown , Danielle E. Moser , Althea V. Moorhead , William J. Cooke

Transneptunian objects (TNOs) are bodies populating the Kuiper Belt and they are believed to retain the most pristine and least altered material of the solar system. The Herschel Open Time Key Program entitled "TNOs are Cool: A survey of…

Context. The existence of meteor clusters has long since been a subject of speculation and so far only seven events have been reported, among which two involve less than five meteors, and three were seen during the Leonid storms. Aims. The…

We present a new space mission concept that is capable of finding, detecting, and tracking 90% of near-Earth objects (NEO) with H magnitude of $\rm H\leq22$ (i.e., $\sim$140 m in size) that are potentially hazardous to the Earth. The new…

Instrumentation and Methods for Astrophysics · Physics 2017-07-24 Michael Shao , Slava G. Turyshev , Sara Spangelo , Thomas Werne , Chengxing Zhai

We present the first set of trans-Neptunian objects (TNOs) observed on multiple nights in data taken from the DECam Ecliptic Exploration Project (DEEP). Of these 110 TNOs, 105 do not coincide with previously known TNOs and appear to be new…

Recent time-domain surveys have revealed rapid transients that evolve on timescales of $\lesssim 10$ days, expanding the transient population into the short-duration regime. The transient search on even shorter timescales, particularly…

Near-Earth objects (NEOs) are excellent laboratories for testing processes that affect airless bodies, as well as informing us about Solar System history. Though most NEOs are nominally anhydrous because they formed inside the Solar System…

Earth and Planetary Astrophysics · Physics 2026-02-03 Lauren McGraw , Cristina Thomas , Josh Emery , Andy Rivkin

The goal of this work is to determine if the dynamics of individual Taurid Complex (TC) objects are consistent with the formation of the complex via fragmentation of a larger body, or if the current orbital affinities between the TC members…

Earth and Planetary Astrophysics · Physics 2021-08-11 A. Egal , P. Wiegert , P. G. Brown , P. Spurný , J. Borovička , G. B. Valsecchi

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

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…

Earth and Planetary Astrophysics · Physics 2015-07-15 Anatoliy Ivantsov , Siegfried Eggl , Daniel Hestroffer , William Thuillot , Pini Gurfil

As of mid-2026, 11 objects have been discovered prior to impacting the Earth, with warning times between 2 - 20 hours. Using real metre-sized Earth impactors from the last decade, we ask the question: ``If the Vera C. Rubin Observatory's…

Earth and Planetary Astrophysics · Physics 2026-05-20 Michael A. Frazer , Hadrien A. R. Devillepoix , Sophie E. Deam

We report results of a four-year survey using Electron Multiplied Charged Coupled Device (EMCCD) cameras recording 34761 two-station video meteor events complete to a limiting magnitude of +6. The survey goal was to characterize probable…

Earth and Planetary Astrophysics · Physics 2021-10-04 Tristan Mills , P. G. Brown , M. J. Mazur , D. Vida , Peter S. Gural , Althea V. Moorhead

Context. Near-Earth objects (NEOs) on an impact course with Earth can move at high angular speed. Understanding their properties, including rotation state, is crucial for assessing impact risks and mitigation strategies. Traditional…

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…