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Fix: Sign of T^3 term in mean perigee/apogee time #33

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Fix: Sign of T^3 term in mean perigee/apogee time #33

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2 changes: 1 addition & 1 deletion pymeeus/Moon.py
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Original file line number Diff line number Diff line change
Expand Up @@ -895,7 +895,7 @@ def moon_perigee_apogee(epoch, target="perigee"):
t = k / 1325.55
# Compute the time of the 'mean' perigee or apogee
jde = (2451534.6698 + 27.55454989 * k
+ (-0.0006691 + (0.000001098 + 0.0000000052 * t) * t) * t * t)
+ (-0.0006691 + (-0.000001098 + 0.0000000052 * t) * t) * t * t)
# Moon's mean elongation at jde
D = (171.9179 + 335.9106046 * k
+ (-0.0100383 + (-0.00001156 + 0.000000055 * t) * t) * t * t)
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