Near-Earth Objects
ASTEROID CLOSE APPROACHES · POTENTIALLY HAZARDOUS OBJECTS · NASA CNEOS
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ASTEROID CLOSE APPROACHES
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Source: NASA Center for Near Earth Object Studies · API Key: DEMO_KEY
ABOUT NEAR-EARTH OBJECTS
Near-Earth Objects (NEOs) are comets and asteroids nudged by gravitational attraction into orbits that bring them close to Earth. NASA’s Center for Near Earth Object Studies (CNEOS) computes high-precision orbits for all known NEOs and assesses impact hazard. Objects flagged PHA (Potentially Hazardous Asteroid) have orbits that bring them within 0.05 AU of Earth and are large enough to cause significant regional damage. Distance is measured in AU (Astronomical Units) — 1 AU = 93 million miles, the distance from Earth to the Sun.