Total eclipse | |||||||||||||||||
Date | May 4, 2004 | ||||||||||||||||
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Gamma | −0.3132 | ||||||||||||||||
Magnitude | 1.3035 | ||||||||||||||||
Saros cycle | 131 (33 of 72) | ||||||||||||||||
Totality | 75 minutes, 28 seconds | ||||||||||||||||
Partiality | 203 minutes, 12 seconds | ||||||||||||||||
Penumbral | 315 minutes, 43 seconds | ||||||||||||||||
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A total lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, May 4, 2004,[1] with an umbral magnitude of 1.3035. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 1.2 days before perigee (on May 6, 2004, at 0:30 UTC), the Moon's apparent diameter was larger.[2]
This lunar eclipse is the third of a tetrad, with four total lunar eclipses in series, the others being on May 16, 2003; November 9, 2004; and October 28, 2004.