February 1952 lunar eclipse

{{Infobox lunar eclipse

| type = partial

| image = Lunar eclipse chart close-1952Feb11.png

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

| date = February 11, 1952

| gamma = 0.9416

| magnitude = 0.0832

| saros_ser = 113

| saros_no = 60 of 71

| partiality = 70 minutes, 7 seconds

| penumbral = 301 minutes, 55 seconds

| p1 = 22:08:20

| u1 = 0:04:17

| greatest = 0:39:18

| u4 = 1:14:24

| p4 = 3:10:15

| previous = September 1951

| next = August 1952

}}

A partial lunar eclipse occurred at the Moon’s descending node of orbit on Monday, February 11, 1952,{{cite web|title=February 10–11, 1952 Partial Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1952-february-11|publisher=timeanddate|access-date=22 December 2024}} with an umbral magnitude of 0.0832. 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 2.7 days after apogee (on February 8, 1952, at 8:25 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=1952&n=136|publisher=timeanddate|access-date=22 December 2024}}

Visibility

The eclipse was completely visible over northeastern North America, eastern South America, Europe, Africa, and the Middle East, seen rising over much of North America and western South America and setting over much of Asia.{{cite web|title=Partial Lunar Eclipse of 1952 Feb 11|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1952Feb11P.pdf|publisher=NASA|access-date=22 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=Partial Lunar Eclipse of 1952 Feb 11|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1952Feb11Pprime.html|publisher=EclipseWise.com|access-date=22 December 2024}}

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|+February 11, 1952 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 1.17816

Umbral Magnitude

| 0.08323

Gamma

| 0.94161

Sun Right Ascension

| 21h34m29.0s

Sun Declination

| -14°25'36.6"

Sun Semi-Diameter

| 16'12.4"

Sun Equatorial Horizontal Parallax

| 08.9"

Moon Right Ascension

| 09h35m56.5s

Moon Declination

| +15°12'10.8"

Moon Semi-Diameter

| 14'48.1"

Moon Equatorial Horizontal Parallax

| 0°54'19.3"

ΔT

| 29.9 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.

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|+ Eclipse season of February 1952

! February 11
Descending node (full moon) !! February 25
Ascending node (new moon)

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| Partial lunar eclipse
Lunar Saros 113

Total solar eclipse
Solar Saros 139

Related eclipses

= Eclipses in 1952 =

A partial lunar eclipse on February 11.
A total solar eclipse on February 25.
A partial lunar eclipse on August 5.
An annular solar eclipse on August 20.

= Metonic =

Preceded by: Lunar eclipse of April 23, 1948
Followed by: Lunar eclipse of November 29, 1955

= Tzolkinex =

Preceded by: Lunar eclipse of December 29, 1944
Followed by: Lunar eclipse of March 24, 1959

= Half-Saros =

Preceded by: Solar eclipse of February 4, 1943
Followed by: Solar eclipse of February 15, 1961

= Tritos =

Preceded by: Lunar eclipse of March 13, 1941
Followed by: Lunar eclipse of January 9, 1963

= Lunar Saros 113 =

Preceded by: Lunar eclipse of January 30, 1934
Followed by: Lunar eclipse of February 21, 1970

= Inex =

Preceded by: Lunar eclipse of March 3, 1923
Followed by: Lunar eclipse of January 20, 1981

= Triad =

Preceded by: Lunar eclipse of April 11, 1865
Followed by: Lunar eclipse of December 11, 2038

= Lunar eclipses of 1951–1955 =

= Saros 113 =

= 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 120.

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