April 1930 lunar eclipse

{{Infobox lunar eclipse

| type = partial

| image = Lunar eclipse chart close-1930Apr13.png

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

| date = April 13, 1930

| gamma = 0.9545

| magnitude = 0.1065

| saros_ser = 111

| saros_no = 62 of 71

| partiality = 73 minutes, 22 seconds

| penumbral = 267 minutes, 18 seconds

| p1 = 3:44:47

| u1 = 5:21:43

| greatest = 5:58:30

| u4 = 6:35:04

| p4 = 8:12:06

| previous = November 1929

| next = October 1930

}}

A partial lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, April 13, 1930,{{cite web|title=April 12–13, 1930 Partial Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1930-april-13|publisher=timeanddate|access-date=16 December 2024}} with an umbral magnitude of 0.1065. 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 3.8 days after perigee (on April 9, 1930, at 11:20 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=1930&n=136|publisher=timeanddate|access-date=16 December 2024}}

Visibility

The eclipse was completely visible over North and South America, seen rising over eastern Australia and the central Pacific Ocean and setting over much of Europe and Africa.{{cite web|title=Partial Lunar Eclipse of 1930 Apr 13|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1901/LE1930Apr13P.pdf|publisher=NASA|access-date=16 December 2024}}

class=wikitable

|300px 300px

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=Partial Lunar Eclipse of 1930 Apr 13|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1930Apr13Pprime.html|publisher=EclipseWise.com|access-date=16 December 2024}}

class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"

|+April 13, 1930 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 1.10669

Umbral Magnitude

| 0.10650

Gamma

| 0.95452

Sun Right Ascension

| 01h23m32.1s

Sun Declination

| +08°47'25.3"

Sun Semi-Diameter

| 15'56.9"

Sun Equatorial Horizontal Parallax

| 08.8"

Moon Right Ascension

| 13h25m16.0s

Moon Declination

| -07°57'49.4"

Moon Semi-Diameter

| 15'56.7"

Moon Equatorial Horizontal Parallax

| 0°58'31.2"

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.

class="wikitable"

|+ Eclipse season of April 1930

! April 13
Descending node (full moon)

April 28
Ascending node (new moon)

200px

align=center

| Partial lunar eclipse
Lunar Saros 111

Hybrid solar eclipse
Solar Saros 137

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 June 25, 1926
Followed by: Lunar eclipse of January 30, 1934

= Tzolkinex =

Preceded by: Lunar eclipse of March 3, 1923
Followed by: Lunar eclipse of May 25, 1937

= Half-Saros =

Preceded by: Solar eclipse of April 8, 1921
Followed by: Solar eclipse of April 19, 1939

= Tritos =

Preceded by: Lunar eclipse of May 15, 1919
Followed by: Lunar eclipse of March 13, 1941

= Lunar Saros 111 =

Preceded by: Lunar eclipse of April 1, 1912
Followed by: Lunar eclipse of April 23, 1948

= Inex =

Preceded by: Lunar eclipse of May 3, 1901
Followed by: Lunar eclipse of March 24, 1959

= Triad =

Preceded by: Lunar eclipse of June 12, 1843
Followed by: Lunar eclipse of February 11, 2017

= Lunar eclipses of 1930–1933 =

= Saros 111 =

= 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 118.

class=wikitable