A penumbral

lunar eclipse A lunar eclipse occurs when the Moon moves into the Earth's shadow. Such alignment occurs during an eclipse season, approximately every six months, during the full moon phase, when the Moon's orbital plane is closest to the plane of the Eart ...

took place on 7 July 2009, the second of four lunar eclipses in 2009. This eclipse entered only the southernmost tip of the penumbral shadow and thus was predicted to be very difficult to observe visually. This lunar eclipse was the predecessor of the

solar eclipse of 22 July 2009 A total solar eclipse occurred at the Moon's descending node of the orbit on July 22, 2009, with a magnitude of 1.07991. It was the longest total solar eclipse during the 21st century, the longest total solar eclipse during the 3rd millennium wil ...

Eclipse Season An eclipse season is the period, roughly every six months, when eclipses occur. Eclipse seasons are the result of the axial parallelism of the Moon's tilted orbital plane ( tilted five degrees to the Earth's orbital plane), just as Earth's we ...

This is the first eclipse this season. Second eclipse this season: 22 July 2009 Total Solar Eclipse Third eclipse this season: 6 August 2009 Penumbral Lunar Eclipse

Visibility

It was predicted to be seen rising over Australia after dusk on 7 July and setting over western North and South America in the early predawn hours of 7 July. Lunar eclipse from moon-2009Jul07

Map

Related lunar eclipses

Eclipses of 2009

* An annular solar eclipse on 26 January. * A penumbral lunar eclipse on 9 February. * A penumbral lunar eclipse on 7 July. * A total solar eclipse on 22 July. * A penumbral lunar eclipse on 6 August. * A partial lunar eclipse on 31 December.

Lunar year (354 days)

This eclipse is one of five lunar eclipses in a short-lived series. The

lunar year A lunar calendar is a calendar based on the monthly cycles of the Moon's phases (synodic months, lunations), in contrast to solar calendars, whose annual cycles are based only directly on the solar year. The most commonly used calendar, the Gr ...

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.

Saros series

This eclipse is a member of Saros series 110. The previous event occurred on 27 June 1991. The next event is on 18 July 2027 which will end the series.

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, ''The half-saros'' This lunar eclipse is related to two partial solar eclipses of

Solar Saros 117 Saros cycle series 117 for solar eclipse A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of the Earth, totally or partially. Such an alignment occurs during a ...

Notes

External links

*
Penumbral Eclipse of the Moon: 2009 July 07

* http://www.shadowandsubstance.com/ 21st-century lunar eclipses, 2009-07 2009 in science {{lunar-eclipse-stub