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November 1937 lunar eclipse
Partial lunar eclipse November 18, 1937 From Wikipedia, the free encyclopedia
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A partial lunar eclipse occurred at the Moon’s descending node of orbit on Thursday, November 18, 1937,[1] with an umbral magnitude of 0.1443. 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 18 hours before perigee (on November 19, 1937, at 0:30 UTC), the Moon's apparent diameter was larger.[2]
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Visibility
The eclipse was completely visible over much of northeast Asia, North America, and northwestern South America, seen rising over east Asia and Australia and setting over much of South America, west Africa, and western Europe.[3]
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Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
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Eclipse season
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.
Related eclipses
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Eclipses in 1937
- A penumbral lunar eclipse on May 25.
- A total solar eclipse on June 8.
- A partial lunar eclipse on November 18.
- An annular solar eclipse on December 2.
Metonic
- Preceded by: Lunar eclipse of January 30, 1934
- Followed by: Lunar eclipse of September 5, 1941
Tzolkinex
- Preceded by: Lunar eclipse of October 7, 1930
- Followed by: Lunar eclipse of December 29, 1944
Half-Saros
- Preceded by: Solar eclipse of November 12, 1928
- Followed by: Solar eclipse of November 23, 1946
Tritos
- Preceded by: Lunar eclipse of December 19, 1926
- Followed by: Lunar eclipse of October 18, 1948
Lunar Saros 115
- Preceded by: Lunar eclipse of November 7, 1919
- Followed by: Lunar eclipse of November 29, 1955
Inex
- Preceded by: Lunar eclipse of December 7, 1908
- Followed by: Lunar eclipse of October 29, 1966
Triad
- Preceded by: Lunar eclipse of January 17, 1851
- Followed by: Lunar eclipse of September 18, 2024
Lunar eclipses of 1937–1940
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 March 23, 1940 occurs in the next lunar year eclipse set.
Saros 115
This eclipse is a part of Saros series 115, repeating every 18 years, 11 days, and containing 72 events. The series started with a penumbral lunar eclipse on April 21, 1000. It contains partial eclipses from July 6, 1126 through September 30, 1270; total eclipses from October 11, 1288 through July 20, 1739; and a second set of partial eclipses from July 30, 1757 through February 13, 2082. The series ends at member 72 as a penumbral eclipse on June 13, 2280.
The longest duration of totality was produced by member 36 at 99 minutes, 47 seconds on May 15, 1631. All eclipses in this series occur at the Moon’s descending node of orbit.[6]
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
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.
Inex series
This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
Half-Saros cycle
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 122.
| November 12, 1928 | November 23, 1946 |
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See also
Notes
External links
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