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October 2031 lunar eclipse

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

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

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

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.

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

Eclipses in 2031

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 117

Inex

Triad

Lunar eclipses of 2031–2034

This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]

The penumbral lunar eclipse on June 5, 2031 occurs in the previous lunar year eclipse set.

Lunar eclipse series sets from 2031 to 2034
Ascending node   Descending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
112 2031 May 07
 Penumbral
 −1.0694 117 2031 Oct 30
 Penumbral
 1.1774
122 2032 Apr 25
 Total
 −0.3558 127 2032 Oct 18
 Total
 0.4169
132 2033 Apr 14
 Total
 0.3954 137 2033 Oct 08
 Total
 −0.2889
142 2034 Apr 03
 Penumbral
 1.1144 147 2034 Sep 28
 Partial
 −1.0110

Saros 117

This eclipse is a part of Saros series 117, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on April 3, 1094. It contains partial eclipses from June 29, 1238 through September 23, 1382; total eclipses from October 3, 1400 through June 21, 1815; and a second set of partial eclipses from July 2, 1833 through September 5, 1941. The series ends at member 71 as a penumbral eclipse on May 15, 2356.

The longest duration of totality was produced by member 35 at 105 minutes, 43 seconds on April 17, 1707. All eclipses in this series occur at the Moon’s descending node of orbit.[6]

Greatest First
The greatest eclipse of the series occurred on 1707 Apr 17, lasting 105 minutes, 43 seconds.[7] Penumbral Partial Total Central
1094 Apr 03
 1238 Jun 29
 1400 Oct 03
 1563 Jan 09
Last
Central Total Partial Penumbral
1761 May 18
 1815 Jun 21
 1941 Sep 05
 2356 May 15

Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

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.

Series members between 1835 and 2200
1835 May 12
(Saros 99) 		1846 Apr 11
(Saros 100) 		1868 Feb 08
(Saros 102) 		1879 Jan 08
(Saros 103)
1933 Aug 05
(Saros 108)
1944 Jul 06
(Saros 109) 		1955 Jun 05
(Saros 110) 		1966 May 04
(Saros 111) 		1977 Apr 04
(Saros 112) 		1988 Mar 03
(Saros 113)
1999 Jan 31
(Saros 114) 		2009 Dec 31
(Saros 115) 		2020 Nov 30
(Saros 116) 		2031 Oct 30
(Saros 117) 		2042 Sep 29
(Saros 118)
2053 Aug 29
(Saros 119) 		2064 Jul 28
(Saros 120) 		2075 Jun 28
(Saros 121) 		2086 May 28
(Saros 122) 		2097 Apr 26
(Saros 123)
2108 Mar 27
(Saros 124) 		2119 Feb 25
(Saros 125) 		2130 Jan 24
(Saros 126) 		2140 Dec 23
(Saros 127) 		2151 Nov 24
(Saros 128)
2162 Oct 23
(Saros 129) 		2173 Sep 21
(Saros 130) 		2184 Aug 21
(Saros 131) 		2195 Jul 22
(Saros 132)

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[8] This lunar eclipse is related to two partial solar eclipses of Solar Saros 124.

October 25, 2022 November 4, 2040

See also

Notes

  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. ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
  6. ^ "NASA - Catalog of Lunar Eclipses of Saros 117". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 117
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


Quelle: Https://en.wikipedia.org/wiki/October_2031_lunar_eclipse