01-26-2018, 05:00 PM
According to NASA the last time the supermoon, bluemoon and eclipse happened was 1866. In 1982, a blue moon, a supermoon and a lunar eclipse occurred at the same time on Dec. 30, 1982, but only for the Eastern Hemisphere. Because of time zones, the full moon was not considered a blue moon for North America as the previous full moon occurred at the end of Nov. 30, not early on Dec. 1.
The blue moon part of it is pretty arbitrary, but makes it unique. These three events occurring are quite rare, statistically from another article:
Blue Moons make up about 3% of all full Moons,
Supermoons are approximately 25% of all full Moons, and
Total lunar eclipses occur during 5.6% of full Moons,
meaning that a Blue, Super, totally eclipsed Moon occurs with 0.042% of full Moons: once every 2,380 full Moons or so. On average, that corresponds to once every 265 years!
Edit: I was on my phone and in a hurry. Stats from here:
https://www.forbes.com/sites/startswitha...se-really/
This article includes a discussion about the 1982 eclipse not being a blue moon: https://www.space.com/39432-get-ready-fo...lipse.html
I can't find the NASA page anymore but many reference their Cannon of lunar eclipses https://eclipse.gsfc.nasa.gov/lunar.html
The blue moon part of it is pretty arbitrary, but makes it unique. These three events occurring are quite rare, statistically from another article:
Blue Moons make up about 3% of all full Moons,
Supermoons are approximately 25% of all full Moons, and
Total lunar eclipses occur during 5.6% of full Moons,
meaning that a Blue, Super, totally eclipsed Moon occurs with 0.042% of full Moons: once every 2,380 full Moons or so. On average, that corresponds to once every 265 years!
Edit: I was on my phone and in a hurry. Stats from here:
https://www.forbes.com/sites/startswitha...se-really/
This article includes a discussion about the 1982 eclipse not being a blue moon: https://www.space.com/39432-get-ready-fo...lipse.html
I can't find the NASA page anymore but many reference their Cannon of lunar eclipses https://eclipse.gsfc.nasa.gov/lunar.html