trying to work out the angular size of Saturn I know the equation is 57degrees times (actual size divide distance) = Angular size so I have the following: 57deg times (120535 div 1195772020) = 0.005745.... it goes on a fair way.
0.005745 degrees... is this correct?
To calculate the angular size of Saturn, you are on the right track. The formula you mentioned, 57 degrees * (actual size / distance), is the correct formula to use.
In this case, the actual size refers to the size of Saturn, and the distance refers to the distance between Saturn and the observer. Let's break down the calculation based on the values provided:
Actual Size of Saturn = 120,535 (measured in kilometers)
Distance between Saturn and Observer = 1,195,772,020 (measured in kilometers)
Plugging these values into the equation, we have:
57 degrees * (120,535 / 1,195,772,020) = 0.005745 degrees
So, your calculation of 0.005745 degrees appears to be correct. This means that the angular size of Saturn, as observed from your given distance, is approximately 0.005745 degrees.