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Julian
I recently looked into this. There is no simple answer. The Apogee and Perigee vary considerably over time.
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See the following paper from NASA: https://eclipse.gsfc.nasa.gov/SEhelp/moonorbit.html Over the period 2008-2010, the radius of the orbit varies between 356,568 and 406,602km. Over a 5000 year period, it varies between 356,355 and 406,725km. It depends on what the programmes have assumed... Julian, G3YGF On 26/09/2022 00:52, w6de wrote:
They could all be correct depending on the assumptions. Your position on the earth and the distance to the to the moon constantly varies. Examine what each of the three programs assume for the reflection point on the moon and your position on the earth. 
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