Recent content by dagmare

the unit vectors are: for i = 1 .. 3 a(i) = cos(DEC(i))*cos(RA(i)) b(i) = cos(DEC(i))*sin(RA(i)) c(i) = sin(DEC(i)) next i but before calculating that you need to convert hours to radians and deg to radians using: for a given value in hours: Value_in_rad = Value_in_h * PI/12.0 for a given value...

Hello! First I am new at this forum and would like to say hello to everybody :) Second- I am looking for a good tutorial on artificial Earth satellites orbit perturbations. Can somebody give me an advice where I can find it? Do you know any propagation algorithms for artificial satellites that...