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...

hazardous object (PHO) is a near-Earth object – either an asteroid or a comet – with an orbit that can make close approaches to the Earth and which is...

scale is a method for categorizing the impact hazard associated with near-Earth objects (NEOs) such as asteroids and comets. It is intended as a communication...

The Near Earth Object Surveillance Satellite (NEOSSat) is a Canadian microsatellite using a 15-cm aperture f/5.88 Maksutov telescope (similar to that...

program (Campo Imperatore Near-Earth Object Survey), started in 2001, is dedicated to the discovery and follow-up of near-Earth objects (NEOs), namely asteroids...

Lowell Observatory Near-Earth-Object Search (LONEOS) was a project designed to discover asteroids and comets that orbit near the Earth. The project, funded...

2456 Palamedes, and the eponymous 3494 Purple Mountain. The Chinese Near-Earth Object Survey (CNEOS), based at the Xuyi Station (D29) in Xuyi, Jiangsu,...

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...

Earth. Some are regarded as potentially hazardous objects if they are estimated to be large enough to cause regional devastation. Near-Earth object detection...

Technology's Lincoln Laboratory for the systematic detection and tracking of near-Earth objects. LINEAR was responsible for the majority of asteroid discoveries from...

NEO Surveyor, formerly called Near-Earth Object Camera (NEOCam), then NEO Surveillance Mission, is a planned space-based infrared telescope designed to...

or meteoroids and have minimal effect. When large objects impact terrestrial planets such as the Earth, there can be significant physical and biospheric...

Apophis (provisional designation 2004 MN4) is a near-Earth asteroid and a potentially hazardous object with a diameter of 370 metres (1,210 feet) that...

The Near-Earth Object Coordination Centre (NEOCC) is the main centre of the Planetary Defence Office of the European Space Agency (ESA). The NEOCC, which...

asteroid impact event, and has developed and released the National Near-Earth Object Preparedness Strategy Action Plan to better prepare. The first step...

DANEOPS, the DLR-Archenhold Near Earth Objects Precovery Survey, has been initiated to systematically search existing photographic plate archives for precovery...

avoidance comprises the methods by which near-Earth objects (NEO) on a potential collision course with Earth could be diverted away, preventing destructive...

The Center for Near-Earth Object Studies (CNEOS) is the Jet Propulsion Laboratory (JPL) center for computing asteroid and comet orbits and their probability...

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...

for near-Earth objects (NEO), such as comets and asteroids, that could collide with Earth. The reactivation mission was called Near-Earth Object Wide-field...

(provisional designation 1950 DA) is a risk-listed asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately...

discover, catalogue, and study near-Earth objects (NEO), especially those that may impact Earth (potentially hazardous objects). Asteroids are discovered...

The Near-Earth Object Confirmation Page (NEOCP) is a web service listing recently-submitted observations of objects that may be near-Earth objects (NEOs)...

(89959) 2002 NT7 (provisional designation 2002 NT7) is a near-Earth object with a diameter of 1.4 kilometers and potentially hazardous asteroid of the...

An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists...

highlighted in dark-grey. The fastest rotating bodies are all unnumbered near-Earth objects (NEOs) with a diameter of less than 100 meters (see table). Among...

number of smaller objects of historical or scientific interest, such as comets and near-Earth objects. Many trans-Neptunian objects (TNOs) have been discovered;...

conjunction with B612 Foundation members, helped obtain UN oversight of near-Earth object (NEO) tracking and deflection missions through COPUOS along with its...

Sun). Lunar distance is commonly used to express the distance to near-Earth object encounters. Lunar semi-major axis is an important astronomical datum;...

An Earth-crosser is a near-Earth asteroid whose orbit crosses that of Earth as observed from the ecliptic pole of Earth's orbit. The known numbered Earth-crossers...