October 1940 lunar eclipse
A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Wednesday, October 16, 1940,[1] with an umbral magnitude of −0.3749. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 21 hours after apogee (on October 15, 1940, at 11:00 UTC), the Moon's apparent diameter was smaller.[2] VisibilityThe eclipse was completely visible over North America and western South America, seen rising over east Asia and Australia and setting over eastern South America, west Africa, and western Europe.[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 1940
Metonic
Tzolkinex
Half-Saros
Tritos
Lunar Saros 145
Inex
Triad
Lunar eclipses of 1937–1940
Half-Saros cycleA lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two partial solar eclipses of Solar Saros 152.
See alsoNotes
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