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August 2072 lunar eclipse

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August 2072 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateAugust 28, 2072
Gamma0.3563
Magnitude1.1673
Saros cycle129 (41 of 71)
Totality64 minutes, 12 seconds
Partiality220 minutes, 19 seconds
Penumbral306 minutes, 0 seconds
Contacts (UTC)
P113:00:22
U114:13:12
U215:31:16
Greatest16:03:22
U316:35:27
U417:53:31
P419:06:22
← March 2072
February 2073 →

A total lunar eclipse will occur at the Moon’s descending node of orbit on Sunday, August 28, 2072,[1] with an umbral magnitude of 1.1673. 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 4.5 hours before apogee (on August 28, 2072, at 20:40 UTC), the Moon's apparent diameter will be smaller.[2]

This lunar eclipse will be the second of a tetrad, with four total lunar eclipses in series, the others being on March 4, 2072; February 22, 2073; and August 17, 2073.

Visibility

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The eclipse will be completely visible over southeast and east Asia, Australia, and Antarctica, seen rising over Africa, Europe, and west and central Asia and setting over the eastern Pacific Ocean and western North America.[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]

August 28, 2072 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.24389
Umbral Magnitude 1.16727
Gamma 0.35634
Sun Right Ascension 10h31m55.6s
Sun Declination +09°13'37.7"
Sun Semi-Diameter 15'50.1"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 22h31m34.3s
Moon Declination -08°55'07.7"
Moon Semi-Diameter 14'42.5"
Moon Equatorial Horizontal Parallax 0°53'58.7"
ΔT 101.6 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 August–September 2072
August 28
Descending node (full moon)
 September 12
Ascending node (new moon)
Total lunar eclipse
Lunar Saros 129		 Total solar eclipse
Solar Saros 155
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Eclipses in 2072

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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 129

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Inex

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Triad

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Lunar eclipses of 2071–2074

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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 July 8, 2074 occurs in the next lunar year eclipse set.

Lunar eclipse series sets from 2071 to 2074
Ascending node   Descending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
114 2071 Mar 16
 Penumbral
 −1.0756 119 2071 Sep 09
 Penumbral
 1.0834
124 2072 Mar 04
 Total
 −0.3430 129 2072 Aug 28
 Total
 0.3563
134 2073 Feb 22
 Total
 0.3388 139 2073 Aug 17
 Total
 −0.3998
144 2074 Feb 11
 Penumbral
 1.0611 149 2074 Aug 07
 Penumbral
 −1.1291

Saros 129

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This eclipse is a part of Saros series 129, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 10, 1351. It contains partial eclipses from September 26, 1531 through May 11, 1892; total eclipses from May 24, 1910 through September 8, 2090; and a second set of partial eclipses from September 20, 2108 through April 26, 2469. The series ends at member 71 as a penumbral eclipse on July 24, 2613.

The longest duration of totality was produced by member 37 at 106 minutes, 24 seconds on July 16, 2000. 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 2000 Jul 16, lasting 106 minutes, 24 seconds.[7] 		Penumbral Partial Total Central
1351 Jun 10
 1531 Sep 26
 1910 May 24
 1946 Jun 14
Last
Central Total Partial Penumbral
2036 Aug 07
 2090 Sep 08
 2469 Apr 26
 2613 Jul 24

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
1810 Sep 13
(Saros 105) 		1821 Aug 13
(Saros 106) 		1832 Jul 12
(Saros 107) 		1843 Jun 12
(Saros 108) 		1854 May 12
(Saros 109)
1865 Apr 11
(Saros 110) 		1876 Mar 10
(Saros 111) 		1887 Feb 08
(Saros 112) 		1898 Jan 08
(Saros 113) 		1908 Dec 07
(Saros 114)
1919 Nov 07
(Saros 115) 		1930 Oct 07
(Saros 116) 		1941 Sep 05
(Saros 117) 		1952 Aug 05
(Saros 118) 		1963 Jul 06
(Saros 119)
1974 Jun 04
(Saros 120) 		1985 May 04
(Saros 121) 		1996 Apr 04
(Saros 122) 		2007 Mar 03
(Saros 123) 		2018 Jan 31
(Saros 124)
2028 Dec 31
(Saros 125) 		2039 Nov 30
(Saros 126) 		2050 Oct 30
(Saros 127) 		2061 Sep 29
(Saros 128) 		2072 Aug 28
(Saros 129)
2083 Jul 29
(Saros 130) 		2094 Jun 28
(Saros 131) 		2105 May 28
(Saros 132) 		2116 Apr 27
(Saros 133) 		2127 Mar 28
(Saros 134)
2138 Feb 24
(Saros 135) 		2149 Jan 23
(Saros 136) 		2159 Dec 24
(Saros 137) 		2170 Nov 23
(Saros 138) 		2181 Oct 22
(Saros 139)
2192 Sep 21
(Saros 140)

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 136.

August 24, 2063 September 3, 2081

See also

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Notes

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  1. ^ "August 28–29, 2072 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 14 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 14 December 2024.
  3. ^ "Total Lunar Eclipse of 2072 Aug 28" (PDF). NASA. Retrieved 14 December 2024.
  4. ^ "Total Lunar Eclipse of 2072 Aug 28". EclipseWise.com. Retrieved 14 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 129". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 129
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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