March 1942 lunar eclipse

Last updated
March 1942 lunar eclipse
Total eclipse
Lunar eclipse chart close-1942Mar03.png
The Moon's hourly motion shown right to left
DateMarch 3, 1942
Gamma −0.1545
Magnitude 1.5612
Saros cycle 122 (52 of 75)
Totality95 minutes, 54 seconds
Partiality219 minutes, 40 seconds
Penumbral344 minutes, 18 seconds
Contacts (UTC)
P121:29:16
U122:31:40
U223:33:32
Greatest0:21:28
U31:09:26
U42:11:19
P43:13:34

A total lunar eclipse occurred at the Moon's ascending node of orbit on Tuesday, March 3, 1942, [1] with an umbral magnitude of 1.5612. It was a central lunar eclipse, in which part of the Moon passed through the center of the Earth's shadow. 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 5.5 days before perigee (on March 8, 1942, at 11:50 UTC), the Moon's apparent diameter was larger. [2]

Contents

Visibility

The eclipse was completely visible over eastern South America, Africa, Europe, and the Middle East, seen rising over North America and west and central South America and setting over much of Asia and western Australia. [3]

Lunar eclipse from moon-1942Mar03.png Lunar eclipse chart close-1942Mar03.png

Eclipse details

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

March 3, 1942 Lunar Eclipse Parameters
ParameterValue
Penumbral Magnitude2.58789
Umbral Magnitude1.56118
Gamma−0.15453
Sun Right Ascension22h52m50.5s
Sun Declination-07°08'24.4"
Sun Semi-Diameter16'08.0"
Sun Equatorial Horizontal Parallax08.9"
Moon Right Ascension10h52m40.2s
Moon Declination+06°59'52.2"
Moon Semi-Diameter15'42.8"
Moon Equatorial Horizontal Parallax0°57'40.1"
ΔT25.4 s

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.

Eclipse season of March 1942
March 3
Ascending node (full moon)
March 16
Descending node (new moon)
Lunar eclipse chart close-1942Mar03.png SE1942Mar16P.png
Total lunar eclipse
Lunar Saros 122
Partial solar eclipse
Solar Saros 148

Eclipses in 1942

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 122

Inex

Triad

Lunar eclipses of 1940–1944

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 SarosDate
Viewing
Type
Chart
Gamma
102 1940 Mar 23
Lunar eclipse from moon-1940Mar23.png
Penumbral
Lunar eclipse chart close-1940Mar23.png
−1.5034107
112 1941 Mar 13
Lunar eclipse from moon-1941Mar13.png
Partial
Lunar eclipse chart close-1941Mar13.png
−0.8437117 1941 Sep 05
Lunar eclipse from moon-1941Sep05.png
Partial
Lunar eclipse chart close-1941Sep05.png
0.9747
122 1942 Mar 03
Lunar eclipse from moon-1942Mar03.png
Total
Lunar eclipse chart close-1942Mar03.png
−0.1545127 1942 Aug 26
Lunar eclipse from moon-1942Aug26.png
Total
Lunar eclipse chart close-1942Aug26.png
0.1818
132 1943 Feb 20
Lunar eclipse from moon-1943Feb20.png
Partial
Lunar eclipse chart close-1943Feb20.png
0.5752137 1943 Aug 15
Lunar eclipse from moon-1943Aug15.png
Partial
Lunar eclipse chart close-1943Aug15.png
−0.5534
142 1944 Feb 09
Lunar eclipse from moon-1944Feb09.png
Penumbral
Lunar eclipse chart close-1944Feb09.png
1.2698147 1944 Aug 04
Lunar eclipse from moon-1944Aug04.png
Penumbral
Lunar eclipse chart close-1944Aug04.png
−1.2843

Saros 122

This eclipse is a part of Saros series 122, repeating every 18 years, 11 days, and containing 74 events. The series started with a penumbral lunar eclipse on August 14, 1022. It contains partial eclipses from April 10, 1419 through June 24, 1545; total eclipses from July 5, 1563 through May 6, 2050; and a second set of partial eclipses from May 17, 2068 through July 21, 2176. The series ends at member 74 as a penumbral eclipse on October 29, 2338.

The longest duration of totality was produced by member 39 at 100 minutes, 5 seconds on October 11, 1707. All eclipses in this series occur at the Moon’s ascending node of orbit. [6]

GreatestFirst
The greatest eclipse of the series occurred on 1707 Oct 11, lasting 100 minutes, 5 seconds. [7] PenumbralPartialTotalCentral
1022 Aug 14
1419 Apr 10
1563 Jul 05
1617 Aug 16
Last
CentralTotalPartialPenumbral
1996 Apr 04
Lunar eclipse chart close-1996Apr04.png
2050 May 06
Lunar eclipse chart close-2050May06.png
2176 Jul 21
2338 Oct 29

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.

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 total solar eclipses of Solar Saros 129.

February 24, 1933 March 7, 1951
SE1933Feb24A.png SE1951Mar07A.png

See also

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References

  1. "March 2–3, 1942 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 19 December 2024.
  2. "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 19 December 2024.
  3. "Total Lunar Eclipse of 1942 Mar 03" (PDF). NASA. Retrieved 19 December 2024.
  4. "Total Lunar Eclipse of 1942 Mar 03". EclipseWise.com. Retrieved 19 December 2024.
  5. 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.
  6. "NASA - Catalog of Lunar Eclipses of Saros 122". eclipse.gsfc.nasa.gov.
  7. Listing of Eclipses of series 122
  8. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros