August 2009 lunar eclipse

A penumbral lunar eclipse took place on August 6, 2009, the third of four lunar eclipses in 2009. The moon's small entry into the Earth's penumbral shadow will produce an extremely subtle dimming of the moon's southern edge, difficult to observe visually.

Penumbral Lunar Eclipse
August 6, 2009

This subtle penumbral eclipse covered a fraction of the southern part of the moon as shown in this animation by John Walker, viewed from Lignières, Switzerland.

The moon grazed the Earth's southern penumbral shadow.
Series (and member)148 (3rd)
Duration (hr:mn:sc)
Penumbral3:09:47
Contacts (UTC)
P123:04:21 (Aug 5)
Greatest0:39:11
P42:14:08

The moon's hourly motion west to east through the constellation of Capricornus and the northern edge of the Earth's penumbral shadow

Eclipse Season

This is the third eclipse this season.

First eclipse this season: 7 July 2009 Penumbral Lunar Eclipse

Second eclipse this season: 22 July 2009 Total Solar Eclipse

Visibility

The eclipse was completely visible over Africa and Europe and South America. It was seen rising over eastern North America and setting over Asia.

Eclipses of 2009

Lunar year cycles (354 days)

The lunar year series repeats after 12 lunations or 354 days (Shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events.

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[1] This lunar eclipse is related to two partial solar eclipses of Solar Saros 155.

July 31, 2000 August 11, 2018

See also

Notes
  1. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
  • John Walker (2009-08-07). "Penumbral Lunar Eclipse Imaged". Retrieved 2009-08-23. The eclipse was captured with two digital photographs and combined into one gif file.
  • 2009 Aug 06 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC


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