Talk:October 2013 lunar eclipse

Edits reverted

Here's some edits I reverted, but could be restored if cleaned up. Tom Ruen (talk) 06:34, 18 October 2013 (UTC)

Penumbra Lunar Eclipse October 2013 - Eclipse Geeks.com

Below; interesting information from Eclipse Geeks website.

Penumbral Lunar Eclipse 18/19 October 2013; Eclipse duration; 239 minutes Penumbral magnitude. 0.791,

Penumbral Lunar Eclipses are subtle. Dimming of the Moon's surface is not always easily perceptible to casual observers

The eclipse will be visible over more than half of the Earth's surface, but it is not visible from New Zealand or Australia.

The entire eclipse visible from; Africa, Europe, Brazil, Extreme north east USA, East Canada, west Russia, and parts of Asia. The eclipse belongs to family of eclipses – Saros Series 117 and is number 52 out of 72 lunar eclipses.

Saros Series 117 The eclipse belongs to family of eclipses – Saros 117 and is number 52 out of 71 lunar eclipses. First Eclipse occurred: 03 April 1094 at 17:48:02 TD Last Eclipse: 15 May 2356 at 12:14:44 TD Duration of Saros 117 - 1262.11 Years

During this lunar eclipse the Moon passes through the penumbra area, with the extreme northern hemisphere passing outside any type of shadow. The eclipse is probably mainly of interest to keen lunar astronomers, and those taking measurements, because the lunar surface will only show faint and subtle changes in shade and dimness. The northern hemisphere will appear brighter, with a gradual decrease in shade towards the southern hemisphere.

As you can see by looking at the diagram, the Moon passes through the penumbra shadow of Earth, but it is not completely immersed in the penumbral, instead the northern hemisphere of the Moon passes outside any shadow, and in physical terminology, the eclipse is only a partial penumbral lunar eclipse. The penumbra shadow cast by the Earth into Space varies according to the specific eclipse, but the penumbra is always about the same size as the Moon’s diameter, and it is rare for the Moon to pass completely inside the penumbra. It nearly always passes with either its northern or southern hemisphere outside the penumbra. And lunar eclipses which pass through any part of the deep umbra (are of course) a partial lunar eclipse. In the rare cases when a Penumbral Eclipse of the Moon does pass completely within the penumbra, it is known as a Total Penumbra Lunar Eclipse.

The eclipse belongs to family of eclipses – Saros 117 and is number 52 out of 71 lunar eclipses.

References