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October 2051 lunar eclipse

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October 2051 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateOctober 19, 2051
Gamma−0.2542
Magnitude1.4130
Saros cycle137 (28 of 78)
Totality83 minutes, 34 seconds
Partiality204 minutes, 17 seconds
Penumbral314 minutes, 11 seconds
Contacts (UTC)
P116:33:07
U117:28:05
U218:28:26
Greatest19:10:13
U319:52:00
U420:52:21
P421:47:18

A total lunar eclipse will occur at the Moon’s descending node of orbit on Thursday, October 19, 2051,[1] with an umbral magnitude of 1.4130. It will be a central lunar eclipse, in which part of the Moon will pass through the center of the Earth's shadow. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring only about 30 minutes after perigee (on October 19, 2051, at 18:40 UTC), the Moon's apparent diameter will be larger.[2]

This lunar eclipse is the last of a tetrad, with four total lunar eclipses in series, the others being on May 6, 2050; October 30, 2050; and April 26, 2051.

This will be the first central eclipse of Saros series 137. Less than a day from perigee, the Moon's apparent diameter will be larger, and be considered a supermoon.

Visibility

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The eclipse will be completely visible over east Africa and much of Europe and Asia, seen rising over eastern South America and west Africa and setting over Australia and the western Pacific Ocean.[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 19, 2051 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.37193
Umbral Magnitude 1.41297
Gamma −0.25423
Sun Right Ascension 13h37m47.1s
Sun Declination -10°10'03.3"
Sun Semi-Diameter 16'03.4"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 01h38m04.1s
Moon Declination +09°55'00.4"
Moon Semi-Diameter 16'44.6"
Moon Equatorial Horizontal Parallax 1°01'27.1"
ΔT 86.3 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.

Eclipse season of October 2051
October 4
Ascending node (new moon)
 October 19
Descending node (full moon)
Partial solar eclipse
Solar Saros 125		 Total lunar eclipse
Lunar Saros 137
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Eclipses in 2051

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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 137

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Inex

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Triad

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Lunar eclipses of 2049–2052

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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 15, 2049 occurs in the previous lunar year eclipse set.

Lunar eclipse series sets from 2049 to 2052
Ascending node   Descending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
112 2049 May 17
 Penumbral
 −1.1337 117 2049 Nov 09
 Penumbral
 1.1964
122 2050 May 06
 Total
 −0.4181 127 2050 Oct 30
 Total
 0.4435
132 2051 Apr 26
 Total
 0.3371 137 2051 Oct 19
 Total
 −0.2542
142 2052 Apr 14
 Penumbral
 1.0628 147 2052 Oct 08
 Partial
 −0.9726

Saros 137

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This eclipse is a part of Saros series 137, repeating every 18 years, 11 days, and containing 78 events. The series started with a penumbral lunar eclipse on December 17, 1564. It contains partial eclipses from June 10, 1835 through August 26, 1961; total eclipses from September 6, 1979 through June 28, 2466; and a second set of partial eclipses from July 9, 2484 through September 12, 2592. The series ends at member 78 as a penumbral eclipse on April 20, 2953.

The longest duration of totality will be produced by member 44 at 99 minutes, 53 seconds on April 13, 2340. All eclipses in this series occur at the Moon’s descending node of orbit.[6]

Greatest First
The greatest eclipse of the series will occur on 2340 Apr 13, lasting 99 minutes, 53 seconds.[7] Penumbral Partial Total Central
1564 Dec 17
 1835 Jun 10
 1979 Sep 06
 2051 Oct 19
Last
Central Total Partial Penumbral
2412 May 26
 2466 Jun 28
 2592 Sep 12
 2953 Apr 20

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

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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 1801 and 2200
1811 Sep 02
(Saros 115) 		1822 Aug 03
(Saros 116) 		1833 Jul 02
(Saros 117) 		1844 May 31
(Saros 118) 		1855 May 02
(Saros 119)
1866 Mar 31
(Saros 120) 		1877 Feb 27
(Saros 121) 		1888 Jan 28
(Saros 122) 		1898 Dec 27
(Saros 123) 		1909 Nov 27
(Saros 124)
1920 Oct 27
(Saros 125) 		1931 Sep 26
(Saros 126) 		1942 Aug 26
(Saros 127) 		1953 Jul 26
(Saros 128) 		1964 Jun 25
(Saros 129)
1975 May 25
(Saros 130) 		1986 Apr 24
(Saros 131) 		1997 Mar 24
(Saros 132) 		2008 Feb 21
(Saros 133) 		2019 Jan 21
(Saros 134)
2029 Dec 20
(Saros 135) 		2040 Nov 18
(Saros 136) 		2051 Oct 19
(Saros 137) 		2062 Sep 18
(Saros 138) 		2073 Aug 17
(Saros 139)
2084 Jul 17
(Saros 140) 		2095 Jun 17
(Saros 141) 		2106 May 17
(Saros 142) 		2117 Apr 16
(Saros 143) 		2128 Mar 16
(Saros 144)
2139 Feb 13
(Saros 145) 		2150 Jan 13
(Saros 146) 		2160 Dec 13
(Saros 147) 		2171 Nov 12
(Saros 148) 		2182 Oct 11
(Saros 149)
2193 Sep 11
(Saros 150)

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).[8] This lunar eclipse is related to two total solar eclipses of Solar Saros 144.

October 14, 2042 October 24, 2060

See also

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Notes

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  1. ^ "October 19–20, 2051 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 12 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 12 December 2024.
  3. ^ "Total Lunar Eclipse of 2051 Oct 19" (PDF). NASA. Retrieved 12 December 2024.
  4. ^ "Total Lunar Eclipse of 2051 Oct 19". EclipseWise.com. Retrieved 12 December 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 137". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 137
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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