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{{short description|Short penumbral}}
{{Infobox lunar eclipse
| type = penumbral
| image = Eclipse penumbral del 24 de mayo de 2013 (crop).jpg
| caption =
| date = May 25, 2013
| gamma = 1.5350
| magnitude = −0.9322
| saros_ser = 150
| saros_no = 1 of 71
| partiality =
| penumbral = 33 minutes, 34 seconds
| p1 = 3:53:15
| u1 =
| greatest = 4:09:58
| u4 =
| p4 = 4:26:49
| previous = April 2013
| next = October 2013
}}
A penumbral [[lunar eclipse]] occurred at the Moon’s [[Lunar node|ascending node]] of orbit on Saturday, May 25, 2013,<ref>{{cite web|title=May 24–25, 2013 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/2013-may-25|publisher=timeanddate|access-date=15 November 2024}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of −0.9322. 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 only about 18 hours before [[Apsis|perigee]] (on May 25, 2013, at 21:40 UTC), the Moon's apparent diameter was larger.<ref>{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=2013&n=136|publisher=timeanddate|access-date=15 November 2024}}</ref>

This eclipse was visually imperceptible due to the small entry into the penumbral shadow. It also marked the [[#Saros series|beginning of Saros series 150]].

== Visibility ==
The eclipse was completely visible over much of [[North America|North]] and [[South America]], [[west Africa]], and [[western Europe]], seen rising over the central [[Pacific Ocean]] and western [[Canada]] and setting over central Europe and [[central Africa]].<ref>{{cite web|title=Penumbral Lunar Eclipse of 2013 May 25|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2013May25N.pdf|publisher=NASA|access-date=15 November 2024}}</ref>

{| class=wikitable width=480
|[[File:Lunar eclipse from moon-2013May25.png|240px]]
|[[File:Lunar eclipse chart close-2013May25.png|240px]] Hourly motion shown right to left
|[[File:Lunar eclipse chart-2013May25.png|250px]] The Moon's hourly motion across the Earth's shadow in the constellation of [[Scorpius]].
|- align=center
|colspan=3| [[File:Visibility Lunar Eclipse 2013-05-25.png|640px]] Visibility map
|}

== Images ==
[[File:2013-05-25 Lunar Eclipse Sketch.png|thumb|left|NASA chart of the eclipse]]
{{clear}}

== Gallery ==
<gallery>
File:Penumbral eclipse of May 25, 2013 from lunar south pole.gif|Animation of the eclipse viewed from [[South pole of the Moon]]
</gallery>

== Eclipse details ==
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.<ref>{{cite web|title=Penumbral Lunar Eclipse of 2013 May 25|url=https://eclipsewise.com/lunar/LEprime/2001-2100/LE2013May25Nprime.html|publisher=EclipseWise.com|access-date=15 November 2024}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+May 25, 2013 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 0.01702
|-
| Umbral Magnitude
| −0.93215
|-
| Gamma
| 1.53512
|-
| Sun Right Ascension
| 04h08m32.9s
|-
| Sun Declination
| +20°58'05.1"
|-
| Sun Semi-Diameter
| 15'47.5"
|-
| Sun Equatorial Horizontal Parallax
| 08.7"
|-
| Moon Right Ascension
| 16h09m09.9s
|-
| Moon Declination
| -19°24'45.3"
|-
| Moon Semi-Diameter
| 16'38.2"
|-
| Moon Equatorial Horizontal Parallax
| 1°01'03.5"
|-
| ΔT
| 67.1 s
|}
{{clear}}

== Eclipse season ==
{{See also|Eclipse cycle}}
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 [[month#Synodic month|synodic month]].

{| class="wikitable"
|+ Eclipse season of April–May 2013
! [[April 2013 lunar eclipse|April 25]] Ascending node (full moon) !! [[Solar eclipse of May 10, 2013|May 10]] Descending node (new moon) !! May 25 Ascending node (full moon) 
|-
| [[File:Lunar eclipse chart close-2013Apr25.png|200px]] || [[File:SE2013May10A.png|200px]] || [[File:Lunar eclipse chart close-2013May25.png|200px]]
|- align=center
| [[Lunar eclipse#Types of lunar eclipse|Partial lunar eclipse]] Lunar Saros 112 || [[Total eclipse#Types|Annular solar eclipse]] Solar Saros 138 || [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 150
|}

== Related eclipses ==
=== Eclipses in 2013 ===
* [[April 2013 lunar eclipse|A partial lunar eclipse on April 25]].
* [[Solar eclipse of May 10, 2013|An annular solar eclipse on May 10]].
* '''A penumbral lunar eclipse on May 25.'''
* [[October 2013 lunar eclipse|A penumbral lunar eclipse on October 18]].
* [[Solar eclipse of November 3, 2013|A hybrid solar eclipse on November 3]].

=== Metonic ===
* Preceded by: [[August 2009 lunar eclipse|Lunar eclipse of August 6, 2009]]

=== Tzolkinex ===
* Followed by: [[July 2020 lunar eclipse|Lunar eclipse of July 5, 2020]]

=== Tritos ===
* Preceded by: [[June 2002 lunar eclipse|Lunar eclipse of June 24, 2002]]

=== Lunar Saros 150 ===
* Followed by: [[June 2031 lunar eclipse|Lunar eclipse of June 5, 2031]]

=== Inex ===
* Preceded by: [[June 1984 lunar eclipse|Lunar eclipse of June 13, 1984]]

=== Triad ===
* Preceded by: [[July 1926 lunar eclipse|Lunar eclipse of July 25, 1926]]

=== Lunar eclipses of 2009–2013 ===
{{Lunar eclipse set 2009-2013}}

=== Saros 150 ===
{{Lunar Saros series 150}}

=== Tritos series ===
{{Lunar Tritos series June 2002}}

=== Inex series ===
{{Inex eclipse set info}}

{| class="wikitable mw-collapsible mw-collapsed"
!colspan=6| Series members between 1801 and 2200
|-
|colspan=2 style="text-align:center;"| [[October 1810 lunar eclipse|1810 Oct 12]] (Saros 143)
|colspan=2 style="text-align:center;"| [[September 1839 lunar eclipse|1839 Sep 23]] (Saros 144)
|colspan=2 style="text-align:center;"| [[September 1868 lunar eclipse|1868 Sep 02]] (Saros 145)
|-
|
|
|
|
|
|
|-
|colspan=2 style="text-align:center;"| [[August 1897 lunar eclipse|1897 Aug 12]] (Saros 146)
|colspan=2 style="text-align:center;"| [[July 1926 lunar eclipse|1926 Jul 25]] (Saros 147)
|colspan=2 style="text-align:center;"|
|-
|
|
|[[File:Lunar eclipse chart close-1926Jul25.png|80px]]
|[[File:Lunar eclipse from moon-1926Jul25.png|80px]]
|
|
|-
|colspan=2 style="text-align:center;"| [[June 1984 lunar eclipse|1984 Jun 13]] (Saros 149)
|colspan=2 style="text-align:center;"| 2013 May 25 (Saros 150)
|colspan=2 style="text-align:center;"|
|-
|[[File:Lunar_eclipse_chart close-1984Jun13.png|80px]]
|[[File:Lunar eclipse from moon-1984Jun13.png|80px]]
|[[File:Lunar eclipse chart close-2013May25.png|80px]]
|[[File:Lunar eclipse from moon-2013May25.png|80px]]
|
|
|-
|colspan=2 style="text-align:center;"|
|colspan=2 style="text-align:center;"|
|colspan=2 style="text-align:center;"|
|-
|
|
|
|
|
|
|-
|colspan=2 style="text-align:center;"|
|colspan=2 style="text-align:center;"| [[January 2187 lunar eclipse|2187 Jan 24]] (Saros 156)
|-
|
|
|
|
|}

==See also==
*[[List of lunar eclipses]] and [[List of 21st-century lunar eclipses]]
*[[:File:Penumbral eclipse of May 25, 2013 from lunar south pole.gif]] Animation of Earth as seen from lunar south pole during the eclipse.

==Notes and references==
{{Reflist}}

==External links==
*{{LEplot2001 link|2013|May|25|N}}

{{Lunar eclipses}}
{{Commons category|Lunar eclipse of 2013 May 25}}

{{DEFAULTSORT:Lunar eclipse 2013-05}}
[[Category:21st-century lunar eclipses|2013-05]]

May 2013 lunar eclipse - Revision history

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