Today is the closest super moon since 1948, which means that the moon as at its closest point to Earth in its monthly orbit.
Each month the Moon touches a point where it is its closest to Earth and also further away. Its orbit is not of equal distance around the earth. The term Supermoon first came into use not so long ago, around 30 years from the astrologer Richard Nolle. The definition of the term is a new or full moon which occurs with the moon at or near (within 90% of) its closest approach to Earth in a given orbit.
The full moon on November 14, 2016, will present the closest supermoon of the year (356,509 kilometers or 221,524 miles). What’s more, this November 14, 2016 full moon will showcase the moon at its closest point to Earth thus far in the 21st century (2001 to 2100), and the moon won’t come this close again until the full moon of November 25, 2034.