Credit: Dave Dickinsonĭuring totality, watch for the southwestern limb of the Moon to take on a bright orange to dark red tinge, the sanguine ‘blood red’ of the ‘ blood moon’. Here’s a fun project: without looking at the precise times of contact, try and judge with the partial phases of the Moon get underway, versus the start and end of totality. Certainly, the actual edge of the Earth’s shadow appears as ragged and diffuse, versus sharp and distinct. This sparked a lively discussion on the estimated versus apparent diameter of the Earth’s inner shadow umbra at the Moon’s distance. The 2015 eclipse was extremely bright, with many observers remarking that, to their eyes, the eclipse did not appear to ever entirely hit totality. …and you may not see the Moon disappear entirely.
The third runner up for the century on (mark your calendars) October 21 st, 2097 comes close, with a totality of 15 minutes and 12 seconds in duration. In fact, next week’s total lunar eclipse is the second shortest for the 21 st century: only the April 4 th, 2015 total lunar eclipse was shorter, at just 4 minutes and 42 seconds in duration. This is indeed a very short eclipse, as total lunar eclipses go. Visibility prospects for Wednesday’s eclipse. The process then reverses itself, with the Moon quitting the umbra at 11:26 UT and the eclipse ending at 13:50 UT. Be ready for a very short eclipse, with just 14 minutes and 30 seconds of totality. Totality starts at 11:11 UT, and mid-eclipse occurs at 11:20 UT.
The real action begins around 9:45 UT, when the Moon starts to enter the inner dark umbra of the Earth’s shadow, and the partial stage of the eclipse begins. The penumbral stage for the eclipse begins at 8:47 Universal Time (you can convert UT to your local time here), though it will take another half hour or so before you’ll notice a slight tea-colored shading on the SE lunar limb. The Circumstances For Wednesday’s Eclipse
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