Norman Robert Pogson
Norman Robert Pogson, CIE was an English astronomer who worked in India at the Madras observatory. He discovered several minor planets and made observations on comets. He introduced a mathematical scale of stellar magnitudes with the ratio of two successive magnitudes being the fifth root of one hundred (~2.512) and referred to as Pogson's ratio.
From *.wikipedia.org,
General Info
.
Male
Date of Birth
March 23rd, 1829
Age
197
Birth Place
United Kingdom, England
Date of Death
June 23rd, 1891
Died Aged
62
Star Sign
Aries
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