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{{Short description|Partial lunar eclipse May 25, 1994}}
{{Infobox lunar eclipse
| type = partial
| image = Lunar eclipse chart close-1994May25.png
| caption = The Moon's hourly motion shown right to left
| date = May 25, 1994
| gamma = 0.8933
| magnitude = 0.2432
| saros_ser = 140
| saros_no = 24 of 80
| partiality = 104 minutes, 36 seconds
| penumbral = 261 minutes, 12 seconds
| p1 = 1:19:43
| u1 = 2:37:59
| greatest = 3:30:20
| u4 = 4:22:36
| p4 = 5:40:55
| previous = November 1993
| next = November 1994
}}
A partial [[lunar eclipse]] occurred at the Moon’s [[Lunar node|ascending node]] of orbit on Wednesday, May 25, 1994,<ref>{{cite web|title=May 24–25, 1994 Partial Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1994-may-25|publisher=timeanddate|access-date=9 January 2025}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of 0.2432. 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 only about 23.5 hours after [[Apsis|perigee]] (on May 24, 1994, at 3:55 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=1994&n=136|publisher=timeanddate|access-date=9 January 2025}}</ref>

== Visibility ==
The eclipse was completely visible over eastern [[North America]], [[South America]], [[west Africa]], and [[Antarctica]], seen rising over western North America and the eastern [[Pacific Ocean]] and setting over much of [[Africa]], [[Europe]], and the [[Middle East]].<ref>{{cite web|title=Partial Lunar Eclipse of 1994 May 25|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1994May25P.pdf|publisher=NASA|access-date=9 January 2025}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1994May25.png|300px]] [[File:Lunar eclipse chart close-1994May25.png|300px]]
|}

== Eclipse details ==
Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.<ref>{{cite web|title=Partial Lunar Eclipse of 1994 May 25|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1994May25Pprime.html|publisher=EclipseWise.com|access-date=9 January 2025}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+May 25, 1994 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 1.19408
|-
| Umbral Magnitude
| 0.24318
|-
| Gamma
| 0.89334
|-
| Sun Right Ascension
| 04h06m48.5s
|-
| Sun Declination
| +20°53'35.0"
|-
| Sun Semi-Diameter
| 15'47.5"
|-
| Sun Equatorial Horizontal Parallax
| 08.7"
|-
| Moon Right Ascension
| 16h07m09.9s
|-
| Moon Declination
| -19°59'22.3"
|-
| Moon Semi-Diameter
| 16'36.4"
|-
| Moon Equatorial Horizontal Parallax
| 1°00'56.9"
|-
| ΔT
| 60.3 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]].

{| class="wikitable"
|+ Eclipse season of May 1994
! [[Solar eclipse of May 10, 1994|May 10]] Descending node (new moon) !! May 25 Ascending node (full moon) 
|-
| [[File:SE1994May10A.png|200px]] || [[File:Lunar eclipse chart close-1994May25.png|200px]]
|- align=center
| [[Total eclipse#Types|Annular solar eclipse]] Solar Saros 128 || [[Lunar eclipse#Types of lunar eclipse|Partial lunar eclipse]] Lunar Saros 140
|}

== Related eclipses ==
=== Eclipses in 1994 ===
* [[Solar eclipse of May 10, 1994|An annular solar eclipse on May 10]].
* '''A partial lunar eclipse on May 25.'''
* [[Solar eclipse of November 3, 1994|A total solar eclipse on November 3]].
* [[November 1994 lunar eclipse|A penumbral lunar eclipse on November 18]].

=== Metonic ===
* Preceded by: [[August 1990 lunar eclipse|Lunar eclipse of August 6, 1990]]
* Followed by: [[March 1998 lunar eclipse|Lunar eclipse of March 13, 1998]]

=== Tzolkinex ===
* Preceded by: [[April 1987 lunar eclipse|Lunar eclipse of April 14, 1987]]
* Followed by: [[July 2001 lunar eclipse|Lunar eclipse of July 5, 2001]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of May 19, 1985]]
* Followed by: [[Solar eclipse of May 31, 2003]]

=== Tritos ===
* Preceded by: [[June 1983 lunar eclipse|Lunar eclipse of June 25, 1983]]
* Followed by: [[April 2005 lunar eclipse|Lunar eclipse of April 24, 2005]]

=== Lunar Saros 140 ===
* Preceded by: [[May 1976 lunar eclipse|Lunar eclipse of May 13, 1976]]
* Followed by: [[June 2012 lunar eclipse|Lunar eclipse of June 4, 2012]]

=== Inex ===
* Preceded by: [[June 1965 lunar eclipse|Lunar eclipse of June 14, 1965]]
* Followed by: [[May 2023 lunar eclipse|Lunar eclipse of May 5, 2023]]

=== Triad ===
* Preceded by: [[July 1907 lunar eclipse|Lunar eclipse of July 25, 1907]]
* Followed by: [[March 2081 lunar eclipse|Lunar eclipse of March 25, 2081]]

=== Lunar eclipses of 1991–1994 ===
{{Lunar eclipse set 1991-1994}}

=== Saros 140 ===
{{Lunar Saros series 140}}

=== Tritos series ===
{{Lunar Tritos series April 2005}}

=== Inex series ===
{{Lunar Inex series May 2023}}

=== Half-Saros cycle ===
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a [[Saros (astronomy)#Relationship between lunar and solar saros .28sar.29|half saros]]).<ref>Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, ''The half-saros''</ref> This lunar eclipse is related to two solar eclipses of [[Solar Saros 147]].
{| class=wikitable
![[Solar eclipse of May 19, 1985|May 19, 1985]]
![[Solar eclipse of May 31, 2003|May 31, 2003]]
|-
|[[File:SE1985May19P.png|240px]]
|[[File:SE2003May31A.png|240px]]
|}

== See also ==
*[[List of lunar eclipses]]
*[[List of 20th-century lunar eclipses]]

== References ==
<references />

== External links ==
* [http://www.hermit.org/eclipse/gen_stats.cgi?mode=query&page=full&qtype=type&body=L&saros=140 Saros cycle 140]
* {{LEplot1951 link|1994|May|25|P}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1994-05}}
[[Category:20th-century lunar eclipses|1994-05]]
[[Category:1994 in science]]
[[Category:May 1994]]

May 1994 lunar eclipse - Revision history

imported>BunnysBot: Fix CW Errors with GenFixes (T1)