Results 51 to 60 of about 447,866 (197)

NEOForCE: Near-Earth Objects’ Forecast of Collisional Events

Astronomy & Astrophysics
Context. Robust impact monitoring of near-Earth objects is an essential task of planetary defense. Current systems such as NASA’s Sentry-II, NEODyS’s CLOMON2, and ESA’s Aegis have been highly successful, but independent approaches are essential to ensure
Vavilov D. E., Hestroffer D.
doaj   +1 more source

(523599) 2003 RM: The Asteroid that Wanted to be a Comet

The Planetary Science Journal, 2023
We report a statistically significant detection of nongravitational acceleration on the subkilometer near-Earth asteroid (523599) 2003 RM. Due to its orbit, 2003 RM experiences favorable observing apparitions every 5 yr.
Davide Farnocchia, Darryl Z. Seligman, Mikael Granvik, Olivier Hainaut, Karen J. Meech, Marco Micheli, Robert Weryk, Steven R. Chesley, Eric J. Christensen, Detlef Koschny, Jan T. Kleyna, Daniela Lazzaro, Michael Mommert, Richard J. Wainscoat   +13 more
doaj   +1 more source

New Astronomical Observatory Design for the Detection and Tracking of Satellite Objects: The Satellite Robotic Observatory (SRO)

Remote Sensing
Robotic Astronomical Observatories (RAOs) have provided very good results in different research projects in astrophysics/astronomy. Their applications in the detection, tracking, and identification of near-Earth objects have contributed to the ...
Francisco Espartero, Javier Cubas, David Nespral, Santiago Pindado   +3 more
doaj   +1 more source

Infrared Fluxes and Lightcurves of Near-Earth Objects: The Full Spitzer Sample

The Astronomical Journal
The IRAC camera on the Spitzer Space Telescope observed 2175 near-Earth objects (NEOs) during its Warm Mission phase, primarily in three large surveys, and also in a small number of a dedicated projects.
Joseph L. Hora, Alicia J. Allen, David E. Trilling, Howard A. Smith, Andrew McNeill   +4 more
doaj   +1 more source

Migration of Jupiter-family comets and resonant asteroids to near-Earth space

, 2003
We estimated the rate of comet and asteroid collisions with the terrestrial planets by calculating the orbits of 13000 Jupiter-crossing objects (JCOs) and 1300 resonant asteroids and computing the probabilities of collisions based on random-phase ...
Asher, Binzel, Bottke, Bulirsh, Chyba, Delsemme, Duncan, Fernandez, Fernandez, Ipatov, Ipatov, Ipatov, Ipatov, Ipatov, Ipatov, Ipatov, J C MATHER, Jedicke, Jewitt, Jewitt, Jewitt, Kuchner, Levison, Levison, Levison, Lupishko, Morbidelli, Ozernoy, Pavlov, Rickman, S I IPATOV, Valsecchi   +31 more
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Stratified Evolution of Ryugu’s Regolith Revealed by Spectroscopic Analyses of Two Hayabusa2 Collected Particles

The Astrophysical Journal
We present Fourier transform infrared (FTIR) and Raman spectroscopic analyses of two particles (A0226 and C0242) returned from the C-type asteroid Ryugu by the Hayabusa2 mission.
M. Angrisani, X. Shehaj, E. Palomba, G. Pratesi, M. Romani, M. Cestelli Guidi, A. Longobardo, F. Dirri, M. D’Amore, T . Catelani   +9 more
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A Constellation of MicroSats to Search for NEOs

, 2018
Large or even medium sized asteroids impacting the Earth can cause damage on a global scale. Existing and planned concepts for finding near-Earth objects (NEOs) with diameter of 140 m or larger would take ~15-20 years of observation to find ~90% of them.
Saini, Navtej, Shao, Michael, Trahan, Russell, Turyshev, Slava G., Zhai, Chengxing, Zhou, Hanying   +5 more
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FEATURES OF KOTLIN ORBIT ESTIMATION LIBRARY

Odessa Astronomical Publications, 2018
Since the launch of Sputnik 1, the number of objects in near-earth orbit has been constantly increasing. The growth of number of these objects increases the risk of their collisions with existing satellites and ones which will be launched, that can be ...
L. S. Shakun
doaj   +1 more source

Discovery of near-Earth asteroids by CCD scanning [PDF]

The found near-Earth asteroid are different objects with peculiar orbits. With the new technique of CCD scanning we entered the domain of the smallest, the fastest, and the closest near-Earth asteroids.
Gehrels, Tom, Mcmillan, Robert S., Perry, M. L., Rabinowitz, D. L., Scotti, J. V.   +4 more
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The flux of small asteroids near the Earth [PDF]

Fifteen new EA's (Earth approachers) have been discovered since September, among them the smallest asteroids on record: 1990 UN, 1991 BA, and 1991 JR, which are in the 10 to 100 m size range (Scotti et al. 1991b).
Rabinowitz, David L.
core   +1 more source