Did you ever wonder how NASA spots asteroids that maybe getting too close to Earth for comfort? Watch and learn. Find out more about NASA finds, studies and tracks near-Earth objects by visiting https://www.nasa.gov/planetarydefense.

3 天之前 · The Asteroid Watch dashboard tracks asteroids and comets that will make relatively close approaches to Earth. The dashboard displays the date of closest approach, approximate object diameter, relative size and distance from Earth for each encounter.

Asteroid Watch. Next Five Asteroid Approaches. Eyes on Asteroids. Fast Facts. Eyes on Asteroids. See thousands of asteroids and comets in real-time, see the next five close approaches to Earth, and explore past, present and future missions to asteroids and comets.

Sentry is a highly automated collision monitoring system that continually scans the most current asteroid catalog for possibilities of future impact with Earth over the next 100 years. Whenever a potential impact is detected it will be analyzed and the results immediately published here, except in unusual cases where we seek independent ...

Asteroid absolute magnitude (in general, smaller H implies larger asteroid diameter). Undefined for comets. Diameter Diameter value when known or a range (min - max) estimated using the asteroid's absolute magnitude (H) and limiting albedos of 0.25 and 0.05. Rarity

2021年12月10日 · Fully interactive, Eyes on Asteroids uses science data to help visualize asteroid and comet orbits around the Sun. Zoom in to travel along with your favorite spacecraft as they explore these fascinating near-Earth objects in beautiful 3D.

CNEOS is NASA's center for computing asteroid and comet orbits and their odds of Earth impact.

A leftover piece of meteoroid or asteroid that survives its passage through the Earth's atmosphere and lands on Earth's surface. Asteroids, comets, and meteors: what's the difference? These space rocks each have their own unique attributes.

2025年2月1日 · CNEOS analysis of near-Earth asteroid 2024 YR4, which is estimated to be about 40 to 90 meters wide, indicates it has a more than 1% chance of impacting Earth on Dec. 22, 2032 — which also means there is almost a 99% chance this asteroid will not impact.

For example, to display information about asteroid 433 Eros, enter either 433 or eros, not both (names are not case-sensitive). This tool provides access to data related to the user-specified asteroid or comet.