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December 1945 lunar eclipse
A total lunar eclipse occurred at the Moon’s ascending node of orbit on Wednesday, December 19, 1945,[1] with an umbral magnitude of 1.3424. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 1.6 days after perigee (on December 17, 1945, at 12:40 UTC), the Moon's apparent diameter was larger.[2] VisibilityThe eclipse was completely visible over much of North and South America, west Africa, Europe, and northern Russia, seen rising over the eastern Pacific Ocean and setting over east and southern Africa and much of Asia.[3]
Eclipse detailsShown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
Eclipse seasonThis 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 eclipsesEclipses in 1945
Metonic
Tzolkinex
Half-Saros
Tritos
Lunar Saros 124
Inex
Triad
Lunar eclipses of 1944–1947This 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.
Saros 124This eclipse is a part of Saros series 124, repeating every 18 years, 11 days, and containing 73 events. The series started with a penumbral lunar eclipse on August 17, 1152. It contains partial eclipses from March 21, 1513 through June 15, 1639; total eclipses from June 25, 1657 through April 18, 2144; and a second set of partial eclipses from April 29, 2162 through July 14, 2288. The series ends at member 73 as a penumbral eclipse on October 21, 2450. The longest duration of totality was produced by member 39 at 101 minutes, 27 seconds on August 30, 1765. All eclipses in this series occur at the Moon’s ascending 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 seriesThis 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.
Half-Saros cycleA 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 131.
See alsoNotes
External links
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