how often does a lunar elcipse occur?

Answer 1

Eclipses occur about every 5½ months as the nodes (the intersections) of the
Earth's and the Moon's orbits align with the 'line of sight' between the
Earth and the Sun, and as long as the Moon arrives at or near that spot at
the same time.

The reason for this length of time, rather than 6 months, is because the
Moon's orbit around the Earth twists and makes a complete 'backward twist'
once every 18 years, 10 or 11 days (depending on how many leap years there
are in the intervening time).

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Answer 2

In most calender years,there are two lunar eclipses.In some years,one or three may occur. No lunar eclipse may occur at all in some other years.
But solar eclipses occur two to five times in a year,five being very rare.

Answer 3

The eclipses for the next couple of years.
February 21, 2008 (total eclipse)
August 16, 2008 (partial)
February 9, 2009 (prenumbral)
July 7, 2009 (prenumbral)
August 5-6, 2009 (prenumbral)
December 31, 2009 (partial)
The prenumbral region is the end of shadow, the length emerging shadow area.

Answer 4

I'm not too sure of it's frequency but I know there was a lunar eclipse this past March. NASA's web site has a lot of information about lunar eclipse.

Answer 5

i'm unsure of the acceptable selection yet I see them a minimum of one or 2 circumstances a twelve months. that's a predictable adventure and additionally you will be waiting to ascertain while the subsequent one is that in case you seem at an astronomy calendar.

Answer 6

Um.. Here's a schedule..

Answer 7

Roughly once every 1.7 years