... to observe the Moon a week after perigee (closest point to the Earth) and then two ... of the above paragraph; I had said libration was maximized at apogee and perigee ...
... 22 is also happening when the Moon is at perigee , or closest approach to the Earth ... from full moon at apogee to full moon at perigee, sure, you'd see the difference ...
... You can do this very easily by making a short stop at the Lunar Perigee and Apogee Counter courtesy of Fourmilab (perigee and apogee are when the Moon is closest and farthest from the Earth, respectively). ...
... During that time, it reaches perigee (closest approach to the Earth) at some instant ... and the average change in distance between perigee and apogee is about 40,000 ...
... At perigee , or closest approach, it is about 363,000 kilometers away, and at apogee , or farthest point, it is about 405,000 ... The Moon orbits the Earth in about a month, incidentally, so it goes from apogee to perigee every two weeks. ...