Results 11 to 20 of about 15,725 (313)
The Near-Earth Object Surveyor Mission [PDF]
The Planetary Science Journal, 2023 The Near-Earth Object (NEO) Surveyor mission is a NASA Observatory designed to discover and characterize asteroids and comets. The mission’s primary objective is to find the majority of objects large enough to cause severe regional impact damage (>140 m ...
A. K. Mainzer +36 more
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Computer Aided Near Earth Object Detection [PDF]
Symposium - International Astronomical Union, 1994 The Spacewatch program at the University of Arizona has pioneered automatic methods of detecting Near Earth Objects. Our software presently includes three modes of object detection: automatic motion identification; automatic streak identification; and visual streak identification. For automatic motion detection at sidereal drift rates, the 4σ detection
R. S. McMillan +5 more
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Calculation of nonlimit active earth pressure of retaining walls based on curved sliding surface [PDF]
Scientific ReportsThe shape of the sliding surface and the displacement of the wall have important effects on the earth pressure of retaining walls. Taking the cohesive backfill behind the inclined retaining wall as the research object, the relationship between the ...
Guihai Gao +3 more
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Algorithms for Moving Object Detection: YSTAR-NEOPAT Survey Program [PDF]
Journal of Astronomy and Space Sciences, 2005 We developed and compared two automatic algorithms for moving object detections in the YSTAR-NEOPAT sky survey program. One method, called starlist comparison method, is to identify moving object candidates by comparing the photometry data tables from ...
Young-Ho Bae +8 more
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Structurally topological algorithm for star recognition and near-Earth space’ object detection [PDF]
Компьютерная оптика, 2020 When solving a variety of celestial navigation tasks there is a problem of determining parameters of spacecraft motion and onboard primary payload orientation based on the coordinates of registered star images.
I.G. Zhurkin, L.N. Chaban, P.Yu. Orlov
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Capturing near earth objects [PDF]
Research in Astronomy and Astrophysics, 2010 22 pages, 6 figures, accepted for publication in Research in Astronomy and Astrophysics (Chinese Journal of Astronomy and Astrophysics)
Baoyin, Hexi, Chen, Yang, Li, Junfeng
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The NEO Surveyor Near-Earth Asteroid Known Object Model
The Planetary Science Journal, 2023 The known near-Earth object (NEO) population consists of over 32,000 objects, with a yearly discovery rate of over 3000 NEOs per year. An essential component of the next generation of NEO surveys is an understanding of the population of known objects ...
Tommy Grav +6 more
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Automated Streak Detection for High Velocity Objects: Test with YSTAR-NEOPAT Images [PDF]
Journal of Astronomy and Space Sciences, 2005 We developed an algorithm to efficiently detect streaks in survey images and made a performance test with YSTAR-NEOPAT images obtained by the 0.5m telescope stationed in South Africa. Fast moving objects whose apparent speeds exceed 10 arcsec/min are the
Dae-Won Chung +6 more
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Unconfirmed Near-Earth Objects [PDF]
The Astronomical Journal, 2018 Abstract 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 17000 NEA candidates, while the majority became either new discoveries or were associated with previously known objects, about 11% were unable to be ...
Peter Vereš +6 more
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Feed-Forward Neural Network Denoising Applied to Goldstone Solar System Radar Images
Remote Sensing, 2022 The study of Near-Earth Asteroids (NEA) is crucial for human safety. Small hazardous asteroids with small radar cross sections are not easy to detect, track, and characterize due to the small signal-to-noise ratio (SNR) of the radar echo. This manuscript
Nereida Rodriguez-Alvarez +4 more
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