The Denver Post
October 16, 2015 - Supermoon
The supermoon obscure is on us Sunday, and Colorado should have rather transparent skies for viewing.
In western North America (looking during you, Colorado) a obscure will be partially underway when a Moon rises. The National Weather Service forecasts “partly cloudy” skies, that confident star watchers select to call “mostly clear.” The full obscure will be manifest from South America, western Europe and executive and eastern North America.
The U.S. Naval Observatory’s accessible Lunar Eclipse Computer determines when a obscure will be manifest in a night sky, formed on location.
This is a totally singular obscure event. Why, we ask? Well, it’s a SUPERMOON. There have been usually 5 supermoon lunar eclipses given 1900, a final one being in 1982. This also means that a final time an obscure like this took place, ‘Knight Rider’ was on TV, a gallon of gas cost $.91, and both ‘Blade Runner’ and ‘Star Trek II: The Wrath of Khan’ were in theaters. It’s also going to be something called a “blood moon.”
A supermoon is when a full moon displays in a night sky during a closest orbital indicate to Earth, or a perigee, that can make it seem adult to 14 percent incomparable in area, about 7 percent incomparable in hole and 30 percent brighter than a full moon noticed when a during a apogee, or farthest indicate from Earth.
Here’s an explainer of since this is also called a “blood moon” eclipse, that sounds totally steel since it totally is.
This is a fourth sum lunar obscure in a final dual years: prior eclipses occurred on Apr 14, 2014, Oct. 8, 2014, and Apr 4, 2015. This is also a final sum lunar obscure until 2018.
A sum lunar obscure has five stages. Here’s what to watch for (via Sky and Telescope):
- First (penumbral) stage: This starts when a Moon’s corner enters a outdoor prejudiced of Earth’s shadow, called a penumbra. Shading will apprear unequivocally diseased until a Moon is about median opposite a penumbra. Watch for a slight extinguishing to turn apparent on a reduce left side (as seen from N. America) of a Moon. This shading will get stronger as a obscure progresses.
- Second (partial eclipse) stage: This theatre happens when a Moon’s heading corner enters a “umbra” — a middle shade of a Earth that totally hides a Moon. Telescope viewers can watch closely as each lunar underline clearly dissolves into a shadow, while a sky grows darker. This proviso will final a small some-more than an hour, and a Moon will start to seem reddish.
- Third (total eclipse) stage: As a final bit of a Moon’s corner slips into a umbra, a Moon will heat greatly red or orange, that is unequivocally a steer to see.
- Fourth Stage: Everything plays out in retreat sequence as a Moon’s corner starts to reemerge into a sunlight, behind into prejudiced eclipse.
- Fifth Stage: The Moon will totally shun a umbra, and a penumbral shading will continue to diminution for about 30 to 40 minutes.
- BONUS: Sky and Telescope will lift a obscure in a LIVE webcast Sunday night, Sep 27th, during 7:00 p.m. MDT.
Here’s a good video from NASA about this phenomenon.
Also, here’s another treat, only since we adore we all. (Sorry, not sorry.)