Near-Earth orbit - Wikipedia
Near-Earth orbit or Near Earth orbit may refer to: Low Earth orbit, orbits around Earth that are near it; Near-Earth space, space of the main geocentric orbits; Near-Earth object orbits, Solar orbits that bring things in those orbits near the orbit of the Earth
NEO Earth Close Approaches - NASA
The following table shows close approaches to the Earth by near-Earth objects (NEOs) limited as selected in the “Table Settings” below. Data are not available prior to 1900 A.D. nor after 2200 A.D. Data are further limited to encounters with reasonably low …
Near-Earth object - Wikipedia
A near-Earth object (NEO) is any small Solar System body orbiting the Sun whose closest approach to the Sun is less than 1.3 times the Earth–Sun distance (astronomical unit, AU). [2]
Near-Earth Object Program - NASA
2023年5月1日 · Near-Earth Objects, or NEOs, are comets and asteroids that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter Earth’s neighborhood. The Near-Earth Object Program coordinates NASA-sponsored efforts to detect, track and characterize potentially hazardous asteroids and comets that could ...
NEO Close Approaches - TheSkyLive
Orbit diagram of current NEOs objects passing close to the Earth. View NEOs in the 3D Solar System Simulator. A constantly up to date list of the predicted close approaches of Earth with of NEO Asteroids happening in the near future.
Center for NEO Studies
CNEOS is NASA's center for computing asteroid and comet orbits and their odds of Earth impact. See our Close Approach Tables for more on this object and other NEOs. See our Discovery …
Near-Earth Objects - NASA
NEOs are a broad category of small-bodies defined as those with a trajectory that can come within 1.3 au of the Sun. Since the Earth orbits at approximately 1 au, such objects can in principle come within 0.3 au of Earth.
Asteroid Watch | NASA Jet Propulsion Laboratory (JPL)
Most near-Earth objects are asteroids that range in size from about 10 feet (a few meters) to nearly 25 miles (40 kilometers) across. The orbit of each object is computed by finding the elliptical path through space that best fits all the available observations, which often span many orbits over many years or decades.
Near-Earth Objects - UNOOSA
A near-Earth object is an asteroid or comet which passes close to the Earth's orbit. In technical terms, a NEO is considered to have a trajectory which brings it within 1.3 astronomical units of the Sun and hence within 0.3 astronomical units, or approximately 45 million kilometres, of …
Near Earth Orbit Network (NEON) | NESDIS
NOAA’s Near Earth Orbit Network (NEON) Program will develop future low-Earth orbit (LEO) environmental satellites. Low and medium Earth observations are critical for weather forecasting, environmental observation, climate monitoring and public safety.