March 1932 lunar eclipse

March 1932 lunar eclipse
Partial eclipse
The Moon's hourly motion shown right to left
DateMarch 22, 1932
Gamma−0.4956
Magnitude0.9666
Saros cycle131 (29 of 72)
Partiality185 minutes, 20 seconds
Penumbral303 minutes, 51 seconds
Contacts (UTC)
P110:00:20
U110:59:36
Greatest12:32:15
U414:04:57
P415:04:11

A partial lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, March 22, 1932,[1] with an umbral magnitude of 0.9666. 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 21 hours before perigee (on March 23, 1932, at 9:10 UTC), the Moon's apparent diameter was larger.[2]

This was the last of the first set of partial lunar eclipses in Lunar Saros 131, preceding the first total eclipse on April 2, 1950.

Visibility

The eclipse was completely visible over northeast Asia, Australia, and northwestern North America, seen rising over much of Asia and setting over much of North America and western South America.[3]

Eclipse details

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

March 22, 1932 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 1.93030
Umbral Magnitude 0.96656
Gamma −0.49562
Sun Right Ascension 00h06m09.9s
Sun Declination +00°40'06.5"
Sun Semi-Diameter 16'02.7"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 12h05m11.0s
Moon Declination -01°06'34.4"
Moon Semi-Diameter 16'39.0"
Moon Equatorial Horizontal Parallax 1°01'06.3"
ΔT 24.0 s

Eclipse season

See also: Eclipse cycle

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 1932
March 7
Ascending node (new moon)		 March 22
Descending node (full moon)
Annular solar eclipse
Solar Saros 119		 Partial lunar eclipse
Lunar Saros 131

Eclipses in 1932

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 131

Inex

Triad

Lunar eclipses of 1930–1933

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 February 10, 1933 and August 5, 1933 occur in the next lunar year eclipse set.

Lunar eclipse series sets from 1930 to 1933
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
111 1930 Apr 13
 Partial
 0.9545 116 1930 Oct 07
 Partial
 −0.9812
121 1931 Apr 02
 Total
 0.2043 126 1931 Sep 26
 Total
 −0.2698
131 1932 Mar 22
 Partial
 −0.4956 136 1932 Sep 14
 Partial
 0.4664
141 1933 Mar 12
 Penumbral
 −1.2369 146 1933 Sep 04
 Penumbral
 1.1776

Saros 131

This eclipse is a part of Saros series 131, repeating every 18 years, 11 days, and containing 72 events. The series started with a penumbral lunar eclipse on May 10, 1427. It contains partial eclipses from July 25, 1553 through March 22, 1932; total eclipses from April 2, 1950 through September 3, 2202; and a second set of partial eclipses from September 13, 2220 through April 9, 2563. The series ends at member 72 as a penumbral eclipse on July 7, 2707.

The longest duration of totality will be produced by member 38 at 100 minutes, 36 seconds on June 28, 2094. All eclipses in this series occur at the Moon’s descending node of orbit.[6]

Greatest First

The greatest eclipse of the series will occur on 2094 Jun 28, lasting 100 minutes, 36 seconds.[7] 		Penumbral Partial Total Central
1427 May 10
 1553 Jul 25
 1950 Apr 02
 2022 May 16
Last
Central Total Partial Penumbral
2148 Jul 31
 2202 Sep 03
 2563 Apr 09
 2707 Jul 07

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 138.

March 17, 1923 March 27, 1941

See also

Notes

  1. ^ "March 22–23, 1932 Partial Lunar Eclipse". timeanddate. Retrieved 16 December 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 16 December 2024.
  3. ^ "Partial Lunar Eclipse of 1932 Mar 22" (PDF). NASA. Retrieved 16 December 2024.
  4. ^ "Partial Lunar Eclipse of 1932 Mar 22". EclipseWise.com. Retrieved 16 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 131". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 131
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros