Expression 4: "h" left parenthesis, "x" , right parenthesis equals 0.5 times left parenthesis, "l" times left parenthesis, 1 minus ( 0.0 1 6 7 4 times cos ( pi times ( 360 / 365.2 5 6 3 6 3 ) times ( "x" minus 4 ) / 180 ) ) , right parenthesis minus "l" plus 1 , right parenthesishx=0.5·l·1−(0.01674·cos(π·(360/365.256363)·(x−4)/180))−l+1
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Expression 5: "i" left parenthesis, "x" , right parenthesis equals absolute value left parenthesis, sin left parenthesis, "x" times pi times StartFraction, 0.0 3 3 8 6 Over 1 , EndFraction , right parenthesis , right parenthesisix=abssinx·π·0.033861
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Moon phase: left parenthesis, negative 2 , 1.1 5 , right parenthesis−2,1.15
Label:
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Sun-Earth distance: left parenthesis, negative 2 , 1.1 , right parenthesis−2,1.1