October 1930 lunar eclipse

{{Infobox lunar eclipse

| type = partial

| image = Lunar eclipse chart close-1930Oct07.png

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

| date = October 7, 1930

| gamma = −0.9812

| magnitude = 0.0253

| saros_ser = 116

| saros_no = 53 of 73

| partiality = 38 minutes, 18 seconds

| penumbral = 286 minutes, 38 seconds

| p1 = 16:43:27

| u1 = 18:47:42

| greatest = 19:06:46

| u4 = 19:26:00

| p4 = 21:30:05

| previous = April 1930

| next = April 1931

}}

A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Tuesday, October 7, 1930,{{cite web|title=October 7–8, 1930 Partial Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1930-october-7|publisher=timeanddate|access-date=16 December 2024}} with an umbral magnitude of 0.0253. 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 about 4.4 days after apogee (on October 3, 1930, at 9:45 UTC), the Moon's apparent diameter was smaller.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1930&n=136|publisher=timeanddate|access-date=16 December 2024}}

Visibility

The eclipse was completely visible over east Africa, eastern Europe, Asia, and western Australia, seen rising over west Africa, western Europe, and eastern South America and setting over eastern Australia and northeast Asia.{{cite web|title=Partial Lunar Eclipse of 1930 Oct 07|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1901/LE1930Oct07P.pdf|publisher=NASA|access-date=16 December 2024}}

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Eclipse details

Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.{{cite web|title=Partial Lunar Eclipse of 1930 Oct 07|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1930Oct07Pprime.html|publisher=EclipseWise.com|access-date=16 December 2024}}

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|+October 7, 1930 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 1.09067

Umbral Magnitude

| 0.02525

Gamma

| −0.98118

Sun Right Ascension

| 12h50m44.6s

Sun Declination

| -05°26'30.5"

Sun Semi-Diameter

| 16'00.5"

Sun Equatorial Horizontal Parallax

| 08.8"

Moon Right Ascension

| 00h52m28.2s

Moon Declination

| +04°38'57.1"

Moon Semi-Diameter

| 15'01.5"

Moon Equatorial Horizontal Parallax

| 0°55'08.6"

ΔT

| 24.1 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.

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|+ Eclipse season of October 1930

! October 7
Ascending node (full moon)

October 21
Descending node (new moon)

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| Partial lunar eclipse
Lunar Saros 116

Total solar eclipse
Solar Saros 142

Related eclipses

= Eclipses in 1930 =

A partial lunar eclipse on April 13.
A hybrid solar eclipse on April 28.
A partial lunar eclipse on October 7.
A total solar eclipse on October 21.

= Metonic =

Preceded by: Lunar eclipse of December 19, 1926
Followed by: Lunar eclipse of July 26, 1934

= Tzolkinex =

Preceded by: Lunar eclipse of August 26, 1923
Followed by: Lunar eclipse of November 18, 1937

= Half-Saros =

Preceded by: Solar eclipse of October 1, 1921
Followed by: Solar eclipse of October 12, 1939

= Tritos =

Preceded by: Lunar eclipse of November 7, 1919
Followed by: Lunar eclipse of September 5, 1941

= Lunar Saros 116 =

Preceded by: Lunar eclipse of September 26, 1912
Followed by: Lunar eclipse of October 18, 1948

= Inex =

Preceded by: Lunar eclipse of October 27, 1901
Followed by: Lunar eclipse of September 17, 1959

= Triad =

Preceded by: Lunar eclipse of December 7, 1843
Followed by: Lunar eclipse of August 7, 2017

= Lunar eclipses of 1930–1933 =

= Saros 116 =

= 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 123.

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