February 1944 lunar eclipse

A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Wednesday, February 9, 1944,[1] with an umbral magnitude of −0.5223. 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 about 1.1 days before apogee (on February 10, 1944, at 7:45 UTC), the Moon's apparent diameter was smaller.[2]

February 1944 lunar eclipse
Penumbral eclipse
The Moon's hourly motion shown right to left
DateFebruary 9, 1944
Gamma1.2698
Magnitude−0.5223
Saros cycle142 (14 of 74)
Penumbral226 minutes, 39 seconds
Contacts (UTC)
P13:21:09
Greatest5:14:30
P47:07:48

This eclipse was the first of four penumbral lunar eclipses in 1944, with the others occurring on July 6, August 4, and December 29.

Visibility

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The eclipse was completely visible over North and South America, west Africa, and western Europe, seen rising over northeast Asia and the central Pacific Ocean and setting over Africa, Europe, and the Middle East.[3]

   

Eclipse details

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Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]

February 9, 1944 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 0.57926
Umbral Magnitude −0.52225
Gamma 1.26983
Sun Right Ascension 21h27m03.0s
Sun Declination -15°01'28.5"
Sun Semi-Diameter 16'12.7"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 09h28m05.2s
Moon Declination 16°08'24.5"
Moon Semi-Diameter 14'43.1"
Moon Equatorial Horizontal Parallax 0°54'00.8"
ΔT 26.4 s

Eclipse season

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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.

Eclipse season of January–February 1944
January 25
Descending node (new moon)
February 9
Ascending node (full moon)
   
Total solar eclipse
Solar Saros 130
Penumbral lunar eclipse
Lunar Saros 142
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Eclipses in 1944

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Lunar Saros 142

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Inex

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Triad

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Lunar eclipses of 1940–1944

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Lunar eclipse series sets from 1940–1944
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
 

Half-Saros cycle

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A 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 total solar eclipses of Solar Saros 149.

February 3, 1935 February 14, 1953
   

See also

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  1. ^ "February 8–9, 1944 Penumbral Lunar Eclipse". timeanddate. Retrieved 19 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 19 December 2024.
  3. ^ "Penumbral Lunar Eclipse of 1944 Feb 09" (PDF). NASA. Retrieved 19 December 2024.
  4. ^ "Penumbral Lunar Eclipse of 1944 Feb 09". EclipseWise.com. Retrieved 19 December 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros