October 2042 lunar eclipse

Template:Short description Template:Infobox lunar eclipse A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Tuesday, October 28, 2042. with an umbral magnitude of −0.974. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into the Earth's penumbra. 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. Occurring only about 12 hours before perigee (on October 28, 2042, at 7:30 UTC), the Moon's apparent diameter will be larger.

This event marks the beginning of lunar saros cycle 156 according to some sources, and will be visually imperceptible to the naked eye. Many other sources denote this eclipse as a miss.

According to some sources, it will be the last of 5 metonic cycle eclipses occurring every 19 years on October 28, while the other sources calculate the Moon will miss the shadow.

Visibility

The eclipse will be completely visible over much of Africa, Europe, Asia, and western Australia.

File:Lunar eclipse from moon-2042Oct28.png File:Lunar eclipse chart close-2042Oct28.png

Eclipse season

This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of September–October 2042

September 29 Ascending node (full moon)	October 14 Descending node (new moon)	October 28 Ascending node (full moon)
File:Lunar eclipse chart close-2042Sep29.png	File:SE2042Oct14A.png	File:Lunar eclipse chart close-2042Oct28.png
Penumbral lunar eclipse Lunar Saros 118	Annular solar eclipse Solar Saros 144	Penumbral lunar eclipse Lunar Saros 156

Related eclipses

Eclipses in 2042

• A penumbral lunar eclipse on April 5.
• A total solar eclipse on April 20.
• A penumbral lunar eclipse on September 29.
• An annular solar eclipse on October 14.
• A penumbral lunar eclipse on October 28.

Lunar Saros 156

• Followed by: Lunar eclipse of November 8, 2060

Metonic series

The metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will in nearly the same location relative to the background stars.

Metonic events: May 4 and October 28
Descending node	Ascending node
1966 May 4 - Penumbral (111) 1985 May 4 - Total (121) 2004 May 4 - Total (131) 2023 May 5 - Penumbral (141)	1966 Oct 29 - Penumbral (116) 1985 Oct 28 - Total (126) 2004 Oct 28 - Total (136) 2023 Oct 28 - Partial (146) 2042 Oct 28 - Penumbral (156)
File:Metonic lunar eclipse 1966-2023D.png	File:Metonic lunar eclipse 1966-2023A.png

Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

See also

• List of lunar eclipses and List of 21st-century lunar eclipses
• February 1951 lunar eclipse
• August 2016 lunar eclipse

External links

• 2042 Oct 28 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC

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