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June 1945 lunar eclipse

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June 1945 lunar eclipse
Partial eclipse
The Moon's hourly motion shown right to left
DateJune 25, 1945
Gamma0.5370
Magnitude0.8593
Saros cycle119 (58 of 83)
Partiality192 minutes, 42 seconds
Penumbral333 minutes, 15 seconds
Contacts (UTC)
P112:27:15
U113:37:36
Greatest15:13:55
U416:50:18
P418:00:30

A partial lunar eclipse occurred at the Moon’s descending node of orbit on Monday, June 25, 1945,[1] with an umbral magnitude of 0.8593. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in 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 5.8 days after apogee (on June 19, 1945, at 19:30 UTC), the Moon's apparent diameter was smaller.[2]

Visibility

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The eclipse was completely visible over east Asia, Australia, and Antarctica, seen rising over central and east Africa, the Middle East, and south and central Asia and setting over the eastern 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]

June 25, 1945 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 1.88622
Umbral Magnitude 0.85932
Gamma 0.53701
Sun Right Ascension 06h15m59.8s
Sun Declination +23°23'41.2"
Sun Semi-Diameter 15'44.0"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 18h16m09.1s
Moon Declination -22°53'34.2"
Moon Semi-Diameter 15'19.3"
Moon Equatorial Horizontal Parallax 0°56'13.9"
ΔT 27.1 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 June–July 1945
June 25
Descending node (full moon)		 July 9
Ascending node (new moon)
Partial lunar eclipse
Lunar Saros 119		 Total solar eclipse
Solar Saros 145
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Eclipses in 1945

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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 119

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Inex

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Triad

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Lunar eclipses of 1944–1947

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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 eclipses on February 9, 1944 and August 4, 1944 occur in the previous lunar year eclipse set.

Lunar eclipse series sets from 1944 to 1947
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
109 1944 Jul 06
 Penumbral
 1.2597 114 1944 Dec 29
 Penumbral
 −1.0115
119 1945 Jun 25
 Partial
 0.5370 124 1945 Dec 19
 Total
 −0.2845
129 1946 Jun 14
 Total
 −0.2324 134 1946 Dec 08
 Total
 0.3864
139 1947 Jun 03
 Partial
 −0.9850 144 1947 Nov 28
 Penumbral
 1.0838

Saros 119

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This eclipse is a part of Saros series 119, repeating every 18 years, 11 days, and containing 82 events. The series started with a penumbral lunar eclipse on October 14, 935 AD. It contains partial eclipses from May 18, 1296 through August 2, 1422; total eclipses from August 13, 1440 through June 15, 1927; and a second set of partial eclipses from June 25, 1945 through August 19, 2035. The series ends at member 82 as a penumbral eclipse on March 25, 2396.

The longest duration of totality was produced by member 49 at 102 minutes, 6 seconds on March 30, 1801. 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 1801 Mar 30, lasting 102 minutes, 6 seconds.[7] Penumbral Partial Total Central
934 Oct 14
 1296 May 18
 1440 Aug 13
 1512 Sep 25
Last
Central Total Partial Penumbral
1873 May 12
 1927 Jun 15
 2035 Aug 19
 2396 Mar 25

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
1803 Aug 03
(Saros 106) 		1814 Jul 02
(Saros 107) 		1825 Jun 01
(Saros 108) 		1836 May 01
(Saros 109) 		1847 Mar 31
(Saros 110)
1858 Feb 27
(Saros 111) 		1869 Jan 28
(Saros 112) 		1879 Dec 28
(Saros 113) 		1890 Nov 26
(Saros 114) 		1901 Oct 27
(Saros 115)
1912 Sep 26
(Saros 116) 		1923 Aug 26
(Saros 117) 		1934 Jul 26
(Saros 118) 		1945 Jun 25
(Saros 119) 		1956 May 24
(Saros 120)
1967 Apr 24
(Saros 121) 		1978 Mar 24
(Saros 122) 		1989 Feb 20
(Saros 123) 		2000 Jan 21
(Saros 124) 		2010 Dec 21
(Saros 125)
2021 Nov 19
(Saros 126) 		2032 Oct 18
(Saros 127) 		2043 Sep 19
(Saros 128) 		2054 Aug 18
(Saros 129) 		2065 Jul 17
(Saros 130)
2076 Jun 17
(Saros 131) 		2087 May 17
(Saros 132) 		2098 Apr 15
(Saros 133) 		2109 Mar 17
(Saros 134) 		2120 Feb 14
(Saros 135)
2131 Jan 13
(Saros 136) 		2141 Dec 13
(Saros 137) 		2152 Nov 12
(Saros 138) 		2163 Oct 12
(Saros 139) 		2174 Sep 11
(Saros 140)
2185 Aug 11
(Saros 141) 		2196 Jul 10
(Saros 142)

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 126.

June 19, 1936 June 30, 1954

See also

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Notes

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  1. ^ "June 25–26, 1945 Partial Lunar Eclipse". timeanddate. Retrieved 20 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 20 December 2024.
  3. ^ "Partial Lunar Eclipse of 1945 Jun 25" (PDF). NASA. Retrieved 20 December 2024.
  4. ^ "Partial Lunar Eclipse of 1945 Jun 25". EclipseWise.com. Retrieved 20 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 119". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 119
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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