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  2. NEO Surveyor - Wikipedia

    en.wikipedia.org/wiki/NEO_Surveyor

    [1] [7] In 2019, the Planetary Defense Coordination Office decided to fund this mission outside NASA's science budget due to its national security implications. [9] [10] On 11 June 2021, NASA authorized the NEO Surveyor mission to proceed to the preliminary design phase. [11] The Jet Propulsion Laboratory will lead development of the mission. [1]

  3. Near Earth Network - Wikipedia

    en.wikipedia.org/wiki/Near_Earth_Network

    The Near Earth Network (NEN, formerly GN or Ground Network) provides orbital communications support for near-Earth orbiting customer platforms via various ground stations, operated by NASA and other space agencies. It uses a number of different dishes scattered around the globe.

  4. 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 ...

  5. Planetary Defense Coordination Office - Wikipedia

    en.wikipedia.org/wiki/Planetary_Defense...

    In 2005, the U.S. Congress passed the NASA Authorization Act, which, in part, tasked NASA with finding and cataloguing at least 90% of all near-Earth objects that are 140 meters or larger by 2020. [ 6 ] [ 7 ] However, that goal was clearly not being met by NASA's Near Earth Object Observations Program, which a 2014 report by the NASA Office of ...

  6. 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 ...

  7. 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]

  8. Category:Near-Earth object tracking - Wikipedia

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

    This page was last edited on 27 October 2014, at 20:58 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  9. Center for Near-Earth Object Studies - Wikipedia

    en.wikipedia.org/wiki/Center_for_Near-Earth...

    The Center for Near-Earth Object Studies (CNEOS) is the Jet Propulsion Laboratory's (JPL's) facility for computing asteroid and comet orbits and their probability of Earth impact. [1] [2] CNEOS is located at, and operated by, Caltech in Pasadena, California. CNEOS computes high-precision orbits for Near-Earth Objects (NEOs).