Monday, September 23, 2019
Tuning the diameter of the comet's nucleus C/2018 W2 AFRICANO
I find a new correlation of diameter and magnitude absolute , there are several applicable equations to calculate based on the absolute luminosity of a comet, its diameter or its nuclear radius :
Delsemme 1987 r nuc = 10^( 1.59-0.199H )
applied this formula ,my calculations indicated r nuc ( C/2048W2 ) = 0.99 kms
For Sosa and Fdez ( 2011 )
log D ( kms ) = 1.2-0.13H
for this formula D ( kms ) = 0.79 kms
assuming p=0.4 g cm3
it is necessary to compile absolute total magnitudes absolutes for all's comets .
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