A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Thursday, March 13, 1941,[1] with an umbral magnitude of 0.3226. 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 1.5 days before perigee (on March 14, 1941, at 23:05 UTC), the Moon's apparent diameter was larger.[2]
| Partial eclipse | |||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||
| Date | March 13, 1941 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.8437 | ||||||||||||
| Magnitude | 0.3226 | ||||||||||||
| Saros cycle | 112 (61 of 72) | ||||||||||||
| Partiality | 119 minutes, 46 seconds | ||||||||||||
| Penumbral | 272 minutes, 11 seconds | ||||||||||||
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Visibility
editThe eclipse was completely visible over northeast Asia, eastern Australia, and western North America, seen rising over much of Asia and western Australia and setting over much of North and South America.[3]
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Eclipse details
editShown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 1.29706 |
| Umbral Magnitude | 0.32264 |
| Gamma | −0.84368 |
| Sun Right Ascension | 23h32m32.0s |
| Sun Declination | -02°58'04.6" |
| Sun Semi-Diameter | 16'05.3" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 11h31m29.9s |
| Moon Declination | 02°09'22.2" |
| Moon Semi-Diameter | 16'30.6" |
| Moon Equatorial Horizontal Parallax | 1°00'35.5" |
| ΔT | 24.9 s |
Eclipse season
editThis 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.
| March 13 Ascending node (full moon) |
March 27 Descending node (new moon) |
|---|---|
| |
|
| Partial lunar eclipse Lunar Saros 112 |
Annular solar eclipse Solar Saros 138 |
Related eclipses
editEclipses in 1941
edit- A partial lunar eclipse on March 13.
- An annular solar eclipse on March 27.
- A partial lunar eclipse on September 5.
- A total solar eclipse on September 21.
Metonic
edit- Preceded by: Lunar eclipse of May 25, 1937
- Followed by: Lunar eclipse of December 29, 1944
Tzolkinex
edit- Preceded by: Lunar eclipse of January 30, 1934
- Followed by: Lunar eclipse of April 23, 1948
Half-Saros
edit- Preceded by: Solar eclipse of March 7, 1932
- Followed by: Solar eclipse of March 18, 1950
Tritos
edit- Preceded by: Lunar eclipse of April 13, 1930
- Followed by: Lunar eclipse of February 11, 1952
Lunar Saros 112
edit- Preceded by: Lunar eclipse of March 3, 1923
- Followed by: Lunar eclipse of March 24, 1959
Inex
edit- Preceded by: Lunar eclipse of April 1, 1912
- Followed by: Lunar eclipse of February 21, 1970
Triad
edit- Preceded by: Lunar eclipse of May 12, 1854
- Followed by: Lunar eclipse of January 12, 2028
Lunar eclipses of 1940–1944
edit| Ascending node | Descending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date viewing |
Type chart |
Saros | Date viewing |
Type chart | |
| 102 | 1940 Mar 23
|
Penumbral
|
107 | |||
| 112 | 1941 Mar 13
|
Partial
|
117 | 1941 Sep 05
|
Partial
| |
| 122 | 1942 Mar 03
|
Total
|
127 | 1942 Aug 26
|
Total
| |
| 132 | 1943 Feb 20
|
Partial
|
137 | 1943 Aug 15
|
Partial
| |
| 142 | 1944 Feb 09
|
Penumbral
|
147 | 1944 Aug 04
|
Penumbral
| |
Saros 112
editLunar Saros series 112, repeating every 18 years and 11 days, has a total of 72 lunar eclipse events including 15 total lunar eclipses.
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series occurred on 1490 Jun 02, lasting 100 minutes.[5] | Penumbral | Partial | Total | Central |
| 859 May 20 | 985 Aug 03 | 1364 Mar 18 | 1436 Apr 30 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 1562 Jul 16 | 1616 Aug 27 | 2013 Apr 25
|
2139 Jul 12 | |
There are 11 series events between 1901 and 2100, grouped into threes (called an exeligmos), each column with approximately the same viewing longitude on Earth.
| 1905 Feb 19 | 1923 Mar 3 | 1941 Mar 13 | |||
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| 1959 Mar 24 | 1977 Apr 04 | 1995 Apr 15 | |||
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| 2013 Apr 25 | 2031 May 07 | 2049 May 17 | |||
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| 2067 May 28 | 2085 Jun 08 | ||||
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Half-Saros cycle
editA lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[6] This lunar eclipse is related to two annular solar eclipses of Solar Saros 119.
| March 7, 1932 | March 18, 1950 |
|---|---|
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See also
editReferences
edit- ^ "March 13, 1941 Partial Lunar Eclipse". timeanddate. Retrieved 19 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 19 December 2024.
- ^ "Partial Lunar Eclipse of 1941 Mar 13" (PDF). NASA. Retrieved 19 December 2024.
- ^ "Partial Lunar Eclipse of 1941 Mar 13". EclipseWise.com. Retrieved 19 December 2024.
- ^ Listing of Eclipses of series 112
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
edit- Saros series 112
- 1941 Mar 13 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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