August 1943 lunar eclipse
| Partial eclipse | |||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||
| Date | August 15, 1943 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.5534 | ||||||||||||
| Magnitude | 0.8697 | ||||||||||||
| Saros cycle | 137 (24 of 81) | ||||||||||||
| Partiality | 178 minutes, 23 seconds | ||||||||||||
| Penumbral | 296 minutes, 44 seconds | ||||||||||||
| |||||||||||||
A partial lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, August 15, 1943,[1] with an umbral magnitude of 0.8697. 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 only about 10 hours after perigee (on August 15, 1943, at 9:25 UTC), the Moon's apparent diameter was larger.[2]
Visibility
[edit]The eclipse was completely visible over east Africa, much of Asia, western Australia, and Antarctica, seen rising over eastern South America, west Africa, and Europe and setting over northeast Asia and eastern Australia.[3]
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Eclipse details
[edit]Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 1.81515 |
| Umbral Magnitude | 0.86970 |
| Gamma | −0.55335 |
| Sun Right Ascension | 09h37m47.7s |
| Sun Declination | +14°09'07.3" |
| Sun Semi-Diameter | 15'47.7" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 21h38m19.9s |
| Moon Declination | -14°42'08.2" |
| Moon Semi-Diameter | 16'42.3" |
| Moon Equatorial Horizontal Parallax | 1°01'18.6" |
| ΔT | 26.2 s |
Eclipse season
[edit]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.
| August 1 Ascending node (new moon) |
August 15 Descending node (full moon) |
|---|---|
 |
|
| Annular solar eclipse Solar Saros 125 |
Partial lunar eclipse Lunar Saros 137 |
Related eclipses
[edit]Eclipses in 1943
[edit]- A total solar eclipse on February 4.
- A partial lunar eclipse on February 20.
- An annular solar eclipse on August 1.
- A partial lunar eclipse on August 15.
Metonic
[edit]- Preceded by: Lunar eclipse of October 28, 1939
- Followed by: Lunar eclipse of June 3, 1947
Tzolkinex
[edit]- Preceded by: Lunar eclipse of July 4, 1936
- Followed by: Lunar eclipse of September 26, 1950
Half-Saros
[edit]- Preceded by: Solar eclipse of August 10, 1934
- Followed by: Solar eclipse of August 20, 1952
Tritos
[edit]- Preceded by: Lunar eclipse of September 14, 1932
- Followed by: Lunar eclipse of July 16, 1954
Lunar Saros 137
[edit]- Preceded by: Lunar eclipse of August 4, 1925
- Followed by: Lunar eclipse of August 26, 1961
Inex
[edit]- Preceded by: Lunar eclipse of September 4, 1914
- Followed by: Lunar eclipse of July 26, 1972
Triad
[edit]- Preceded by: Lunar eclipse of October 13, 1856
- Followed by: Lunar eclipse of June 15, 2030
Lunar eclipses of 1940–1944
[edit]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 April 22, 1940 and October 16, 1940 occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on July 6, 1944 and December 29, 1944 occur in the next lunar year eclipse set.
| Lunar eclipse series sets from 1940 to 1944 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 102 | 1940 Mar 23
|
Penumbral
|
−1.5034 | 107 | ||||
| 112 | 1941 Mar 13
|
Partial
|
−0.8437 | 117 | 1941 Sep 05
|
Partial
|
0.9747 | |
| 122 | 1942 Mar 03
|
Total
|
−0.1545 | 127 | 1942 Aug 26
|
Total
|
0.1818 | |
| 132 | 1943 Feb 20
|
Partial
|
0.5752 | 137 | 1943 Aug 15
|
Partial
|
−0.5534 | |
| 142 | 1944 Feb 09
|
Penumbral
|
1.2698 | 147 | 1944 Aug 04
|
Penumbral
|
−1.2843 | |
Saros 137
[edit]It is part of Saros series 137.
Half-Saros cycle
[edit]A 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 total solar eclipses of Solar Saros 144.
| August 10, 1934 | August 20, 1952 |
|---|---|
|
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See also
[edit]External links
[edit]- Saros series 137
- 1943 Aug 15 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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- ^ "August 15–16, 1943 Partial Lunar Eclipse". timeanddate. Retrieved 19 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 19 December 2024.
- ^ "Partial Lunar Eclipse of 1943 Aug 15" (PDF). NASA. Retrieved 19 December 2024.
- ^ "Partial Lunar Eclipse of 1943 Aug 15". EclipseWise.com. Retrieved 19 December 2024.
- ^ 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.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros