What is the significance of “5” multiplier in the formula to computer the siderograph?
Comment: Like Mr. Bradley suggested, I suppose when I wrote the computer program years ago, I no doubt experimented in selecting the multiplier for long term and declination summed values. I checked the program code and find it is set to five (see Number 4 above). This is the only thing that could be construed as an arbitrarily-set factor in the computations of the program I created.