Sentry (surveillance system)

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Orbits of potentially dangerous asteroids (based on knowledge of 2013)

Sentry (engl for:. Sentinel ) is a US-monitoring system , which for the Earth potentially dangerous objects detected and observed. For this purpose, the data of all objects close to the earth are collected in order to calculate a prediction of their orbits and to estimate the probability of a collision with the earth.

purpose

The task of Sentry is the highly automated collision monitoring of earth orbit cruisers , i.e. asteroids , comets and large meteoroids , but also space debris . It is primarily intended to continuously examine the current asteroid catalog for its possible future effects on the earth for the coming century . The existing and newly added data from the existing observation systems such as B. LINEAR , NEAT , CSS , CINEOS , Spacewatch are daily at the Minor Planet Centerat the University of Cincinnati and evaluated.

history

The Sentry System was established in 2002 and, as a further development, replaces the Near Earth Asteroid Tracking program. In a transition phase, both systems ran in parallel and in 2007 NEAT was finally shut down completely. After several successful discoveries, LONEOS withdrew as a data provider in 2008 . From Template: future / in 2 years2022, the Large Synoptic Survey Telescope in Chile is expected to provide additional information.

Results

The latest research results on the Impaktrisiko be from the Center for Near Earth Object Studies (CNEOS) at the Jet Propulsion Laboratory always in the Sentry Risk Table published.

Web links

Commons : Near-Earth Asteroids  - Collection of images, videos and audio files

Individual evidence

  1. a b c Sentry: Earth Impact Monitoring. In: NASA . Retrieved June 6, 2018 .
  2. ^ JPL Sentry Risk Table