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May 2031 lunar eclipse

A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Wednesday, May 7, 2031,[1] with an umbral magnitude of −0.0892. 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 about 2 days before perigee (on May 9, 2031, at 3:35 UTC), the Moon's apparent diameter will be larger.[2]

May 2031 lunar eclipse
Penumbral eclipse
The Moon's hourly motion shown right to left
DateMay 7, 2031
Gamma−1.0694
Magnitude−0.0892
Saros cycle112 (66 of 72)
Penumbral237 minutes, 21 seconds
Contacts (UTC)
P11:52:06
Greatest3:41:03
P45:49:27

Visibility

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The eclipse will be completely visible over eastern North America, South America, Antarctica, and west Africa, seen rising over western North America and the eastern Pacific Ocean and setting over Africa, Europe, and the Middle East.[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]

May 7, 2031 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 0.88267
Umbral Magnitude −0.08921
Gamma −1.06949
Sun Right Ascension 02h55m49.7s
Sun Declination +16°44'40.2"
Sun Semi-Diameter 15'51.2"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 14h54m58.0s
Moon Declination -17°47'29.4"
Moon Semi-Diameter 16'18.7"
Moon Equatorial Horizontal Parallax 0°59'52.0"
ΔT 74.5 s

Eclipse season

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See also: Eclipse cycle

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 May–June 2031
May 7
Ascending node (full moon)
 May 21
Descending node (new moon)
 June 5
Ascending node (full moon)
     
Penumbral lunar eclipse
Lunar Saros 112		 Annular solar eclipse
Solar Saros 138		 Penumbral lunar eclipse
Lunar Saros 150
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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 112

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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

Saros 112

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Lunar Saros series 112, repeating every 18 years and 11 days, has a total of 72 lunar eclipse events including 15 total lunar eclipses.

Greatest First
The greatest eclipse of the series occurred on 1490 Jun 02, lasting 100 minutes.[5] Penumbral Partial Total Central
859 May 20 985 Aug 03 1364 Mar 18 1436 Apr 30
Last
Central Total Partial Penumbral
1562 Jul 16 1616 Aug 27 2013 Apr 25
  		2139 Jul 12

There are 11 series events between 1901 and 2100, grouped into threes (called an exeligmos), each column with approximately the same viewing longitude on Earth.

1901–2100
1905 Feb 19 1923 Mar 3 1941 Mar 13
           
1959 Mar 24 1977 Apr 04 1995 Apr 15
           
2013 Apr 25 2031 May 07 2049 May 17
           
2067 May 28 2085 Jun 08
   

Metonic series

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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.

This series has 9 events centered on May 6th and October 30th: (saros number)

Ascending node Descending node
  1. 2031 May 07.160 - penumbral (112)
  2. 2050 May 06.937 - total (122)
  3. 2069 May 06.380 - total (132)
  4. 2088 May 05.677 - partial (142)
  5. 2107 May 07.186 - penumbral (152)
  1. 2031 Oct 30.323 - penumbral (117)
  2. 2050 Oct 30.139 - total (127)
  3. 2069 Oct 30.148 - total (137)
  4. 2088 Oct 30.125 - partial (147)

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).[6] This lunar eclipse is related to two partial solar eclipses of Solar Saros 119.

April 30, 2022 May 11, 2040
   

See also

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Notes

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  1. ^ "May 6–7, 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 May 07" (PDF). NASA. Retrieved 21 November 2024.
  4. ^ "Penumbral Lunar Eclipse of 2031 May 07". EclipseWise.com. Retrieved 21 November 2024.
  5. ^ Listing of Eclipses of series 112
  6. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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