Don't miss the biggest 'supermoon' of the year on July 13

It's kinda fun to see astrology still can have some positive influence in astronomy. :)

I hope the IAU, if applicable, adopts a Supermoon term for all to use.

However, I don't agree with the current definition since some full moons ("superless") can appear larger (and brighter) than some Supermoons. This is due to the use of looking at the distance between apogee and perigee for that given period, and not how far the Moon is actually from us.

Thus, for example, in 2008 there was a full Supermoon that was only 21% brighter since it was 367,908 km distance. This was 30% less bright than the max. of 30% for the brightest Supermoon.

A better definition, IMO, would be to grant a Supermoon title for one that comes within 3% of a maximum perigee (356,355km), which is 367,046 km, so perhaps use 367,000 km. Any full moon closer than this should be the "super" standard.

More info, thanks to the article's resource....Full Moon at Perigee (Full Supermoon): 2001 to 2100 (astropixels.com)
 

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