Palermo Technical Impact Hazard Scale | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-16

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Palermo_Technical_Impact_Hazard_Scale


00:01:19 1 Scale
00:03:30 2 Positive rating
00:05:45 3 See also



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SUMMARY
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The Palermo Technical Impact Hazard Scale is a logarithmic scale used by astronomers to rate the potential hazard of impact of a near-earth object (NEO). It combines two types of data—probability of impact and estimated kinetic yield—into a single "hazard" value. A rating of 0 means the hazard is equivalent to the background hazard (defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact). A rating of +2 would indicate the hazard is 100 times greater than a random background event.  Scale values less than −2 reflect events for which there are no likely consequences, while Palermo Scale values between −2 and 0 indicate situations that merit careful monitoring.  A similar but less complex scale is the Torino Scale, which is used for simpler descriptions in the non-scientific media.