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October 2031 lunar eclipse

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October 2031 lunar eclipse
Penumbral eclipse
The Moon's hourly motion shown right to left
DateOctober 30, 2031
Gamma1.1774
Magnitude−0.3193
Saros cycle117 (53 of 72)
Penumbral231 minutes, 45 seconds
Contacts (UTC)
P15:49:29
Greatest7:46:45
P49:41:15

A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Thursday, October 30, 2031,[1] with an umbral magnitude of −0.3193. 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. The Moon's apparent diameter will be near the average diameter because it will occur 7.6 days after perigee (on October 22, 2031, at 16:20 UTC) and 6.6 days before apogee (on November 5, 2031, at 21:45 UTC).[2]

Visibility

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The eclipse will be completely visible over North America, western South America, and the eastern Pacific Ocean, seen rising over eastern Australia and northeast Asia and setting over eastern South America, west Africa, and western Europe.[3]

Eclipse details

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Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]

October 30, 2031 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 0.71726
Umbral Magnitude −0.31925
Gamma 1.17738
Sun Right Ascension 14h17m25.0s
Sun Declination -13°44'38.7"
Sun Semi-Diameter 16'06.3"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 02h16m19.7s
Moon Declination +14°49'53.3"
Moon Semi-Diameter 15'32.2"
Moon Equatorial Horizontal Parallax 0°57'01.3"
ΔT 74.8 s

Eclipse season

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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.

Eclipse season of October–November 2031
October 30
Descending node (full moon)
November 14
Ascending node (new moon)
Penumbral lunar eclipse
Lunar Saros 117
Hybrid solar eclipse
Solar Saros 143
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Eclipses in 2031

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Lunar Saros 117

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Inex

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Triad

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Lunar eclipses of 2031–2034

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Lunar eclipse series sets from 2031-2034
Ascending node   Descending node
Saros Date
Viewing
Type
Chart
Saros Date
Viewing
Type
Chart
112 2031 May 07
Penumbral
117 2031 Oct 30
Penumbral
122 2032 Apr 25
Total
127 2032 Oct 18
Total
132 2033 Apr 14
Total
137 2033 Oct 08
Total
142 2034 Apr 03
Penumbral
147 2034 Sep 28
Partial
Last set 2031 Jun 05 Last set 2030 Dec 09
Next set 2035 Feb 22 Next set 2035 Aug 19

Half-Saros cycle

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A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two partial solar eclipses of Solar Saros 124.

October 25, 2022 November 4, 2040

See also

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Notes

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  1. ^ "October 29–30, 2031 Penumbral Lunar Eclipse". timeanddate. Retrieved 21 November 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 21 November 2024.
  3. ^ "Penumbral Lunar Eclipse of 2031 Oct 30" (PDF). NASA. Retrieved 21 November 2024.
  4. ^ "Penumbral Lunar Eclipse of 2031 Oct 30". EclipseWise.com. Retrieved 21 November 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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