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  2. Category:Near-Earth object tracking - Wikipedia

    en.wikipedia.org/wiki/Category:Near-Earth_object...

    Pages in category "Near-Earth object tracking" The following 21 pages are in this category, out of 21 total. ... Code of Conduct; Developers; Statistics; Cookie ...

  3. Near-Earth object - Wikipedia

    en.wikipedia.org/wiki/Near-Earth_object

    Near-Earth comets (NECs) are objects in a near-Earth orbit with a tail or coma made up of dust, gas or ionized particles emitted by a solid nucleus. Comet nuclei are typically less dense than asteroids but they pass Earth at higher relative speeds, thus the impact energy of a comet nucleus is slightly larger than that of a similar-sized ...

  4. List of asteroid close approaches to Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_asteroid_close...

    "NEO Earth Close Approaches" – NASA/JPL's Near-Earth Object Program Office "NEO Earth Close-Approaches" (Between 1900 A.D. and 2200 A.D., NEOs with H <=22, nominal distance within 5 LD) – NASA/JPL's Near-Earth Object Program Office "Near Earth Asteroids (NEAs): A Chronology of Milestones" – International Astronomical Union; NEODyS-2 ...

  5. NEO Surveyor - Wikipedia

    en.wikipedia.org/wiki/NEO_Surveyor

    Near-Earth Object Surveillance Mission Near-Earth Object Camera NEOCam: Mission type: Asteroid impact avoidance, astronomy: Operator: NASA / JPL: Website: https://neos.arizona.edu/ Mission duration: 12 years (planned) [1] Spacecraft properties; Manufacturer: Jet Propulsion Laboratory [1] Launch mass: 1,300 kg (2,900 lb) [1] Start of mission ...

  6. Catalina Sky Survey - Wikipedia

    en.wikipedia.org/wiki/Catalina_Sky_Survey

    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 particular on any potentially hazardous asteroid that may pose a threat of ...

  7. Sentry (monitoring system) - Wikipedia

    en.wikipedia.org/wiki/Sentry_(monitoring_system)

    As of September 2023, there are over 32,955 near-Earth objects of which roughly 1,620 near-Earth asteroids are listed on the risk table. [1] Only around 19 objects on the risk table are large enough to qualify as potentially hazardous objects with a diameter greater than 140 meters (absolute magnitude brighter than 22). About 99% of the objects ...

  8. Near-Earth Asteroid Tracking - Wikipedia

    en.wikipedia.org/wiki/Near-Earth_Asteroid_Tracking

    Near-Earth Asteroid Tracking (NEAT) was a program run by NASA and the Jet Propulsion Laboratory, surveying the sky for near-Earth objects. NEAT was conducted from December 1995 until April 2007, at GEODSS on Hawaii (Haleakala-NEAT; 566 ), as well as at Palomar Observatory in California (Palomar-NEAT; 644 ).

  9. Asteroid Terrestrial-impact Last Alert System - Wikipedia

    en.wikipedia.org/wiki/Asteroid_Terrestrial...

    A106fgF, a 2–5 m asteroid which either passed extremely close or impacted Earth on 2018-01-22. 2018 RC, near earth asteroid on 2018-09-03 (notable because it was discovered more than a day prior to closest approach on 2018-09-09). [43] A10bMLz, unknown space debris, so-called "empty trash bag object" on 2019-01-25. [44]