Sentry (monitoring system) | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-04

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Sentry_(monitoring_system)


00:01:00 1 Sentry Risk Table
00:03:31 2 Numbers
00:04:33 3 Scout
00:05:05 4 See also



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Voice name: en-AU-Wavenet-D


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- Socrates


SUMMARY
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Sentry is a highly automated impact prediction system operated by the JPL Center for NEO Studies (CNEOS) since 2002. It continually monitors 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 by the Near Earth Object Program.
However, several weeks of optical data are not enough to conclusively identify an impact years in the future. By contrast, eliminating an entry on the risk page is a negative prediction; a prediction of where it will not be. Scientists warn against worrying about the possibility of impact with an object based on only a few weeks of optical data that show a possible Earth encounter years from now. Sometimes, it can't even be said for certain what side of the Sun such an object will be at the time of the listed virtual impactor date. Most objects on the Sentry Risk Table have an observation arc of less than 14 days and have not been observed for years.