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A near-Earth object ( NEO) is any small Solar System body orbiting the Sun whose closest approach to the Sun ( perihelion) is less than 1.3 times the Earth–Sun distance ( astronomical unit, AU). [2] This definition applies to the object's orbit around the Sun, rather than its current position, thus an object with such an orbit is considered ...
The small near-Earth asteroids 2008 TC 3, 2014 AA, 2018 LA, 2019 MO, 2022 EB 5, 2022 WJ 1, 2023 CX 1 and 2024 BX 1 are the only eight asteroids discovered before impacting into Earth (see asteroid impact prediction ). Scientists estimate that several dozen asteroids in the 6–12 m (20–39 ft) size range fly by Earth at a distance closer than ...
Sun–Earth L 1. Main telescope. Diameter. 50 cm (20 in) Wavelengths. Infrared (4–5.2 and 6–10 μm) NEO Surveyor, formerly called Near-Earth Object Camera ( NEOCam ), then NEO Surveillance Mission, is a planned space-based infrared telescope designed to survey the Solar System for potentially hazardous asteroids.
The Near Earth Object Surveillance Satellite ( NEOSSat) [8] is a Canadian microsatellite using a 15-cm aperture f/5.88 Maksutov telescope (similar to that on the MOST spacecraft), with 3-axis stabilisation giving a pointing stability of ~2 arcseconds in a ~100 second exposure. It is funded by the Canadian Space Agency (CSA) and Defence Research ...
Overview of all groups of Near-Earth Objects (NEOs). Atira asteroids / ə ˈ t ɪr ə / or Apohele asteroids, also known as interior-Earth objects (IEOs), are Near-Earth objects whose orbits are entirely confined within Earth's orbit; that is, their orbit has an aphelion (farthest point from the Sun) smaller than Earth's perihelion (nearest point to the Sun), which is 0.983 astronomical units ...
Catalina Sky Survey. / 32.417°N 110.733°W / 32.417; -110.733. Catalina Sky Survey ( CSS; obs. code: 703) is an astronomical survey to discover comets and asteroids. It is conducted at the Steward Observatory 's Catalina Station, located near Tucson, Arizona, in the United States. CSS focuses on the search for near-Earth objects, in ...
Lowell Observatory Near-Earth-Object Search. / 35.2028°N 111.6644°W / 35.2028; -111.6644. Lowell Observatory Near-Earth-Object Search ( LONEOS) was a project designed to discover asteroids and comets that orbit near the Earth. The project, funded by NASA, was directed by astronomer Ted Bowell of Lowell Observatory in Flagstaff, Arizona.
The Center for Near-Earth Object Studies (CNEOS) is the Jet Propulsion Laboratory (JPL) center for computing asteroid and comet orbits and their probability of Earth impact. [1] [2] CNEOS is located at Caltech in Pasadena, California . CNEOS computes high-precision orbits for Near-Earth Objects (NEOs).