August 1933 lunar eclipse

{{Infobox lunar eclipse

| type = penumbral

| image = Lunar eclipse chart close-1933Aug05.png

| caption = The Moon's hourly motion shown right to left

| date = August 5, 1933

| gamma = −1.4216

| magnitude = −0.7336

| saros_ser = 108

| saros_no = 70 of 72

| penumbral = 129 minutes, 33 seconds

| p1 = 18:40:48

| greatest = 19:45:41

| p4 = 20:50:21

| previous = March 1933

| next = September 1933

}}

A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, August 5, 1933,{{cite web|title=August 5–6, 1933 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1933-august-5|publisher=timeanddate|access-date=16 December 2024}} with an umbral magnitude of −0.7336. 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 2.1 days after perigee (on August 3, 1933, at 17:40 UTC), the Moon's apparent diameter was larger.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1933&n=136|publisher=timeanddate|access-date=16 December 2024}}

This eclipse was the third of four penumbral lunar eclipses in 1933, with the others occurring on February 10, March 12, and September 4.

Visibility

The eclipse was completely visible over much of Africa, eastern Europe, much of Asia, Australia, and Antarctica, seen rising over western Europe, west Africa, and eastern Brazil and setting over northeast Asia and the western Pacific Ocean.{{cite web|title=Penumbral Lunar Eclipse of 1933 Aug 05|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1901/LE1933Aug05N.pdf|publisher=NASA|access-date=16 December 2024}}

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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.{{cite web|title=Penumbral Lunar Eclipse of 1933 Aug 05|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1933Aug05Nprime.html|publisher=EclipseWise.com|access-date=16 December 2024}}

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|+August 5, 1933 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 0.23237

Umbral Magnitude

| −0.73362

Gamma

| −1.42163

Sun Right Ascension

| 09h01m27.7s

Sun Declination

| +16°56'57.5"

Sun Semi-Diameter

| 15'46.2"

Sun Equatorial Horizontal Parallax

| 08.7"

Moon Right Ascension

| 21h03m41.4s

Moon Declination

| -18°15'57.4"

Moon Semi-Diameter

| 16'19.5"

Moon Equatorial Horizontal Parallax

| 0°59'54.8"

ΔT

| 23.9 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. The first and last eclipse in this sequence is separated by one synodic month.

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|+ Eclipse season of August–September 1933

! August 5
Ascending node (full moon)

August 21
Descending node (new moon)

September 4
Ascending node (full moon)

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| Penumbral lunar eclipse
Lunar Saros 108

Annular solar eclipse
Solar Saros 134

Penumbral lunar eclipse
Lunar Saros 146

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 =

Followed by: Lunar eclipse of May 25, 1937

= Tzolkinex =

Preceded by: Lunar eclipse of June 25, 1926

= Half-Saros =

Preceded by: Solar eclipse of July 31, 1924
Followed by: Solar eclipse of August 12, 1942

= Tritos =

Followed by: Lunar eclipse of July 6, 1944

= Lunar Saros 108 =

Preceded by: Lunar eclipse of July 26, 1915
Followed by: Lunar eclipse of August 17, 1951

= Inex =

Followed by: Lunar eclipse of July 17, 1962

= Triad =

Preceded by: Lunar eclipse of October 4, 1846
Followed by: Lunar eclipse of June 5, 2020

= Lunar eclipses of 1933–1936 =

= Saros 108 =

= Tritos series =

= Inex series =

= Half-Saros cycle =

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros This lunar eclipse is related to two total solar eclipses of Solar Saros 115.

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