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August 2045 lunar eclipse

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August 2045 lunar eclipse
Penumbral eclipse
The Moon's hourly motion shown right to left
DateAugust 27, 2045
Gamma1.2060
Magnitude−0.3899
Saros cycle148 (5 of 70)
Penumbral241 minutes, 40 seconds
Contacts (UTC)
P111:52:33
Greatest13:53:21
P415:54:13

A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Sunday, August 27, 2045,[1] with an umbral magnitude of −0.3899. 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 1.6 days after apogee (on August 26, 2045, at 0:10 UTC), the Moon's apparent diameter will be smaller.[2]

Visibility

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The eclipse will be completely visible over east Asia and Australia, seen rising over east Africa and west, central, and south Asia and setting over 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 27, 2045 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 0.68449
Umbral Magnitude −0.38987
Gamma 1.20606
Sun Right Ascension 10h26m15.1s
Sun Declination +09°46'56.3"
Sun Semi-Diameter 15'49.9"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 22h24m15.1s
Moon Declination -08°48'49.2"
Moon Semi-Diameter 14'44.1"
Moon Equatorial Horizontal Parallax 0°54'04.7"
ΔT 82.4 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 2045
August 12
Descending node (new moon)
 August 27
Ascending node (full moon)
Total solar eclipse
Solar Saros 136		 Penumbral lunar eclipse
Lunar Saros 148
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Eclipses in 2045

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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 148

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Inex

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Triad

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Lunar eclipses of 2042–2045

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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 October 28, 2042 occurs in the previous lunar year eclipse set.

Lunar eclipse series sets from 2042 to 2045
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
113 2042 Apr 05
 Penumbral
 1.1080 118 2042 Sep 29
 Penumbral
 −1.0261
123 2043 Mar 25
 Total
 0.3849 128 2043 Sep 19
 Total
 −0.3316
133 2044 Mar 13
 Total
 −0.3496 138 2044 Sep 07
 Total
 0.4318
143 2045 Mar 03
 Penumbral
 −1.0274 148 2045 Aug 27
 Penumbral
 1.2060

Saros 148

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This eclipse is a part of Saros series 148, repeating every 18 years, 11 days, and containing 70 events. The series started with a penumbral lunar eclipse on July 15, 1973. It contains partial eclipses from October 10, 2117 through May 5, 2460; total eclipses from May 17, 2478 through September 14, 2676; and a second set of partial eclipses from September 25, 2694 through May 25, 3091. The series ends at member 70 as a penumbral eclipse on August 9, 3217.

The longest duration of totality will be produced by member 37 at 104 minutes, 29 seconds on July 10, 2568. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]

Greatest First
The greatest eclipse of the series will occur on 2568 Jul 10, lasting 104 minutes, 29 seconds.[7] Penumbral Partial Total Central
1973 Jul 15
 2117 Oct 10
 2478 May 25
 2514 Jun 08
Last
Central Total Partial Penumbral
2622 Aug 13
 2676 Sep 14
 3091 May 25
 3217 Aug 09

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 2132
1805 Jul 11
(Saros 126) 		1816 Jun 10
(Saros 127) 		1827 May 11
(Saros 128) 		1838 Apr 10
(Saros 129) 		1849 Mar 09
(Saros 130)
1860 Feb 07
(Saros 131) 		1871 Jan 06
(Saros 132) 		1881 Dec 05
(Saros 133) 		1892 Nov 04
(Saros 134) 		1903 Oct 06
(Saros 135)
1914 Sep 04
(Saros 136) 		1925 Aug 04
(Saros 137) 		1936 Jul 04
(Saros 138) 		1947 Jun 03
(Saros 139) 		1958 May 03
(Saros 140)
1969 Apr 02
(Saros 141) 		1980 Mar 01
(Saros 142) 		1991 Jan 30
(Saros 143) 		2001 Dec 30
(Saros 144) 		2012 Nov 28
(Saros 145)
2023 Oct 28
(Saros 146) 		2034 Sep 28
(Saros 147) 		2045 Aug 27
(Saros 148) 		2056 Jul 26
(Saros 149) 		2067 Jun 27
(Saros 150)
2132 Dec 22
(Saros 156)

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 partial solar eclipses of Solar Saros 155.

August 21, 2036 September 2, 2054

See also

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Notes

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  1. ^ "August 27–28, 2045 Penumbral Lunar Eclipse". timeanddate. Retrieved 3 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 3 December 2024.
  3. ^ "Penumbral Lunar Eclipse of 2045 Aug 27" (PDF). NASA. Retrieved 3 December 2024.
  4. ^ "Penumbral Lunar Eclipse of 2045 Aug 27". EclipseWise.com. Retrieved 3 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 148". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 148
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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