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Palermo Technical Impact Hazard Scale

Summarized by Plex Health
Last Updated: 08 April 2022

The Palermo Technological Impact Hazard Scale. Scale was designed to help neo experts identify and prioritize potential impacts spanning a variety of impact dates, energies, and probabilities, as well as scenarios that necessitate careful monitoring. Because there are significantly more small asteroids in space than there are large ones, the background impact rate will vary depending on the size of the near-Earth asteroid. The annual incidence frequency of an impact event with energy at least as large as the event in question is determined by the annual background impact frequency. The scale compares the likelihood of the detected potential harm with the average risk faced by objects of the same size or larger over the years until the date of the potential impact. Scale is a logarithmic scale used by astronomers to assess the likelihood of an occurrence of a near-earth object's danger and estimated kinetic yield, transforming two types of data, probability of impact, and estimated hazard yield into a single hazard value. P = 0. 03 E-0. 8 math > P math > B 0 P 0. 03 E -0. 8 f - 0. 03 f -0. 8 c_B – the annual background impact frequency for this purpose is defined as the base 10 logarithm of the correlation of the event's impact probability p i to the event's background impact probability. P = math> P = 1. 03 E-0. 8 calculate > B = 0. 03 f_B _B = 0. 03 E = t p math > P = f_B = 0. 03 calc 0 -0. 8 math > -0. 8 0 math > a x B -0. 8 x r o 0 o calcul p —arithm math > t e (0) log_B = -0. 8 p 1 0 p 0 p x math > P = The near-Earth object 2002 NT 7 was the first near-Earth object found by NASA's new NEO program to be given a high rating on the scale of 0. 06, reflecting a greater threat than background. til 0,17 for a possible collision in the year 2880, before 2004, MN 4 held the record for Palermo scale values, with a value of 0. 17 for a potential accident. Scale is a logarithmic scale used by astronomers to gauge the likelihood of damage of a near-earth object's impact on a near-earth object's potential impact, and it converts two types of data, a probability of impact, and estimated kinetic yield a into a single hazard value. P is the rate of impact probability; T is the time interval in which p i is considered as a "normal behavior rate"; B is the background impact frequency; yr is the unit of T divided by one year. The first near-Earth object detected by NASA's new NEO program, object 020, was the first near-Earth object detected by the scale to 0. 06, indicating a higher-than-background threat.

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