Question

What is meant by perigee and apogee?

Answer 1

See explanation.

Explanation:

Perigee is the point of the orbit of a natural or artificial satellite at

which the satellite's center is nearest to the planet.s center.

Similarly, apogee is the farthest point..

The extreme distances, from the parent planet, are also referred by

these names.

In the case of our lunar orbit, the minimum 3-sd perigee on record is

357000 km and the maximum apogee is 407000 km.

Current lunar perigee and apogee days and distances are as

follows.

19 Feb 2017 apogee distance : 404, 376 km.

3 Mar 2017 perigee distance : 369062 km.

Reference :
https://www.timeanddate.com/astronomy/moon/lunar-perigee-apogee.html