| Penumbral eclipse | |||||||||
 The Moon's hourly motion shown right to left | |||||||||
| Date | March 12, 1933 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.2369 | ||||||||
| Magnitude | −0.4153 | ||||||||
| Saros cycle | 141 (19 of 73) | ||||||||
| Penumbral | 206 minutes, 15 seconds | ||||||||
| |||||||||
| ← February 1933August 1933 → | |||||||||
A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, March 12, 1933, with an umbral magnitude of −0.4153. 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 3.5 days before perigee (on March 15, 1933, at 17:25 UTC), the Moon's apparent diameter was larger.
This eclipse was the second of four penumbral lunar eclipses in 1933, with the others occurring on February 10, August 5, and September 4.
Visibility
The eclipse was completely visible over eastern North America, South America, and much of Africa and Europe, seen rising over western North America and the eastern Pacific Ocean and setting over east Africa and west, central, and south Asia.
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Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.59243 |
| Umbral Magnitude | −0.41533 |
| Gamma | −1.23688 |
| Sun Right Ascension | 23h27m13.2s |
| Sun Declination | -03°32'18.1" |
| Sun Semi-Diameter | 16'05.6" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 11h24m53.7s |
| Moon Declination | +02°28'43.1" |
| Moon Semi-Diameter | 15'58.2" |
| Moon Equatorial Horizontal Parallax | 0°58'36.5" |
| ΔT | 23.9 s |
Eclipse season
See also: Eclipse cycleThis 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. The first and last eclipse in this sequence is separated by one synodic month.
| February 10 Descending node (full moon) |
February 24 Ascending node (new moon) |
March 12 Descending node (full moon) |
|---|---|---|
 |
 |
|
| Penumbral lunar eclipse Lunar Saros 103 |
Annular solar eclipse Solar Saros 129 |
Penumbral lunar eclipse Lunar Saros 141 |
Related eclipses
Eclipses in 1933
- A penumbral lunar eclipse on February 10.
- An annular solar eclipse on February 24.
- A penumbral lunar eclipse on March 12.
- A penumbral lunar eclipse on August 5.
- An annular solar eclipse on August 21.
- A penumbral lunar eclipse on September 4.
Metonic
- Preceded by: Lunar eclipse of May 23, 1929
- Followed by: Lunar eclipse of December 28, 1936
Tzolkinex
- Preceded by: Lunar eclipse of January 28, 1926
- Followed by: Lunar eclipse of April 22, 1940
Half-Saros
- Preceded by: Solar eclipse of March 5, 1924
- Followed by: Solar eclipse of March 16, 1942
Tritos
- Preceded by: Lunar eclipse of April 11, 1922
- Followed by: Lunar eclipse of February 9, 1944
Lunar Saros 141
- Preceded by: Lunar eclipse of March 1, 1915
- Followed by: Lunar eclipse of March 23, 1951
Inex
- Preceded by: Lunar eclipse of March 31, 1904
- Followed by: Lunar eclipse of February 19, 1962
Triad
- Preceded by: Lunar eclipse of May 11, 1846
- Followed by: Lunar eclipse of January 10, 2020
Lunar eclipses of 1930–1933
| Descending node | Ascending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date viewing |
Type chart |
Saros | Date viewing |
Type chart | |
| 111 | 1930 Apr 13
|
Partial
|
116 | 1930 Oct 07
|
Partial
| |
| 121 | 1931 Apr 02
|
Total
|
126 | 1931 Sep 26
|
Total
| |
| 131 | 1932 Mar 22
|
Partial
|
136 | 1932 Sep 14
|
Partial
| |
| 141 | 1933 Mar 12
|
Penumbral
|
146 | 1933 Sep 04
|
Penumbral
| |
Saros 141
Lunar Saros 141, repeating every 18 years and 11 days, has a total of 72 lunar eclipse events including 26 total lunar eclipses.
First Penumbral Lunar Eclipse: 1608 Aug 25
First Partial Lunar Eclipse: 2041 May 16
First Total Lunar Eclipse: 2167 Aug 01
First Central Lunar Eclipse: 2221 Sep 02
Greatest Eclipse of the Lunar Saros 141: 2293 Oct 16
Last Central Lunar Eclipse: 2546 Mar 18
Last Total Lunar Eclipse: 2618 May 01
Last Partial Lunar Eclipse: 2744 Jul 16
Last Penumbral Lunar Eclipse: 2888 Oct 11
1901-2100
March 1933 lunar eclipse
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two total solar eclipses of Solar Saros 148.
| March 5, 1924 | March 16, 1942 |
|---|---|
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See also
Notes
- "March 11–12, 1933 Penumbral Lunar Eclipse". timeanddate. Retrieved 16 December 2024.
- "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 16 December 2024.
- "Penumbral Lunar Eclipse of 1933 Mar 12" (PDF). NASA. Retrieved 16 December 2024.
- "Penumbral Lunar Eclipse of 1933 Mar 12". EclipseWise.com. Retrieved 16 December 2024.
- Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
- 1933 Mar 12 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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