Asteroid Watch | NASA Jet Propulsion Laboratory (JPL)
The vast majority of asteroid-tracking data, however, is collected by large NASA-funded observatories (such as Pan-STARRS, the Catalina Sky Survey, NASA’s NEOWISE mission and, in the future, NEO Surveyor).
Sentry: Earth Impact Monitoring - NASA
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 ...
Center for NEO Studies
CNEOS is NASA's center for computing asteroid and comet orbits and their odds of Earth impact.
Next Five Asteroid Approaches - NASA Jet Propulsion Laboratory …
5 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.
Eyes on Asteroids | NASA Jet Propulsion Laboratory (JPL)
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.
Fireballs - NASA
The magnitude of the meteor's pre-impact velocity in a geocentric Earth-fixed reference frame defined as follows: the z-axis is directed along the Earth's rotation axis towards the celestial north pole, the x-axis lies in the Earth's equatorial plane, directed towards the prime meridian, and the y-axis completes the right-handed coordinate system.
NEO Earth Close Approaches - NASA
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
NASA’s ‘Eyes on Asteroids’ Reveals Our Near-Earth Object …
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.
NASA’s Next-Generation Asteroid Impact Monitoring System Goes …
2021年12月6日 · This is how impact probabilities are calculated: When telescopes track a new NEA, astronomers measure the asteroid’s observed positions in the sky and report them to the Minor Planet Center. CNEOS then uses that data to determine the asteroid’s most likely orbit around the Sun.
NASA to Track More Asteroids With New Neat Camera
2001年4月12日 · Asteroid search efforts got a boost from a new, improved camera installed this week for NASA's Near Earth Asteroid Tracking system on the 1.2-meter (48-inch) Oschin telescope at the Palomar Observatory near San Diego, Calif. The camera has a new three-eyed design with three lenses.