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{{Short description|Penumbral lunar eclipse June 13, 1984}}
{{Infobox lunar eclipse
| type = penumbral
| image = Lunar eclipse chart close-1984Jun13.png
| caption = The Moon's hourly motion shown right to left
| date = June 13, 1984
| gamma = −1.5240
| magnitude = −0.9414
| saros_ser = 149
| saros_no = 1 of 72
| penumbral = 73 minutes, 0 seconds
| p1 = 13:49:05
| greatest = 14:25:45
| p4 = 15:02:05
| previous = May 1984
| next = November 1984
}}
A penumbral [[lunar eclipse]] occurred at the Moon’s [[Lunar node|descending node]] of orbit on Wednesday, June 13, 1984,<ref>{{cite web|title=June 13–14, 1984 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1984-june-13|publisher=timeanddate|access-date=6 January 2025}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of −0.9414. 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 about 6.1 days after [[Apsis|perigee]] (on June 7, 1984, at 12:25 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=1984&n=136|publisher=timeanddate|access-date=6 January 2025}}</ref>

This minor penumbral eclipse was visually imperceptible, but marked the first lunar eclipse in [[Lunar Saros 149]].<ref>[http://www.hermit.org/Eclipse/gen_stats.cgi?mode=query&page=full&qtype=type&body=L&saros=149 Hermit Eclipse: Saros cycle 149]</ref>

== Visibility ==
The eclipse was completely visible over the eastern half of [[Asia]], [[Australia]], and [[Antarctica]], seen rising over [[Madagascar]] and [[central Asia]] and setting over the eastern [[Pacific Ocean]].<ref>{{cite web|title=Penumbral Lunar Eclipse of 1984 Jun 13|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1984Jun13N.pdf|publisher=NASA|access-date=6 January 2025}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1984Jun13.png|300px]] [[File:Lunar eclipse chart close-1984Jun13.png|300px]]
|}

== 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 1984 Jun 13|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1984Jun13Nprime.html|publisher=EclipseWise.com|access-date=6 January 2025}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+June 13, 1984 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 0.06474
|-
| Umbral Magnitude
| −0.94137
|-
| Gamma
| −1.52403
|-
| Sun Right Ascension
| 05h28m22.3s
|-
| Sun Declination
| +23°14'34.9"
|-
| Sun Semi-Diameter
| 15'44.8"
|-
| Sun Equatorial Horizontal Parallax
| 08.7"
|-
| Moon Right Ascension
| 17h27m24.8s
|-
| Moon Declination
| -24°41'08.0"
|-
| Moon Semi-Diameter
| 15'39.1"
|-
| Moon Equatorial Horizontal Parallax
| 0°57'26.4"
|-
| ΔT
| 54.0 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 May–June 1984
! [[May 1984 lunar eclipse|May 15]] Descending node (full moon) !! [[Solar eclipse of May 30, 1984|May 30]] Ascending node (new moon) !! June 13 Descending node (full moon) 
|-
| [[File:Lunar eclipse chart close-1984May15.png|200px]] || [[File:SE1984May30A.png|200px]] || [[File:Lunar eclipse chart close-1984Jun13.png|200px]]
|- align=center
| [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 111 || [[Total eclipse#Types|Annular solar eclipse]] Solar Saros 137 || [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 149
|}

== Related eclipses ==
=== Eclipses in 1984 ===
* [[May 1984 lunar eclipse|A penumbral lunar eclipse on May 15]].
* [[Solar eclipse of May 30, 1984|An annular solar eclipse on May 30]].
* '''A penumbral lunar eclipse on June 13.'''
* [[November 1984 lunar eclipse|A penumbral lunar eclipse on November 8]].
* [[Solar eclipse of November 22, 1984|A total solar eclipse on November 22]].

=== Metonic ===
* Preceded by: [[August 1980 lunar eclipse|Lunar eclipse of August 26, 1980]]

=== Tzolkinex ===
* Followed by: [[July 1991 lunar eclipse|Lunar eclipse of July 26, 1991]]

=== Tritos ===
* Preceded by: [[July 1973 lunar eclipse|Lunar eclipse of July 15, 1973]]

=== Lunar Saros 149 ===
* Followed by: [[June 2002 lunar eclipse|Lunar eclipse of June 24, 2002]]

=== Inex ===
* Followed by: [[May 2013 lunar eclipse|Lunar eclipse of May 25, 2013]]

=== Triad ===
* Preceded by: [[August 1897 lunar eclipse|Lunar eclipse of August 12, 1897]]

=== Lunar eclipses of 1980–1984 ===
{{Lunar eclipse set 1980-1984}}

=== Saros 149 ===
{{Lunar Saros series 149}}

=== Tritos series ===
{{Tritos eclipse set info}}

{| class="wikitable mw-collapsible mw-collapsed"
!colspan=10| Series members between 1801 and 2060
|-
|colspan=2 style="text-align:center;"| [[October 1809 lunar eclipse|1809 Oct 23]] (Saros 133)
|colspan=2 style="text-align:center;"| [[September 1820 lunar eclipse|1820 Sep 22]] (Saros 134)
|colspan=2 style="text-align:center;"| [[August 1831 lunar eclipse|1831 Aug 23]] (Saros 135)
|colspan=2 style="text-align:center;"| [[July 1842 lunar eclipse|1842 Jul 22]] (Saros 136)
|colspan=2 style="text-align:center;"| [[June 1853 lunar eclipse|1853 Jun 21]] (Saros 137)
|-
|
|
|
|
|
|
|
|
|
|
|-
|colspan=2 style="text-align:center;"| [[May 1864 lunar eclipse|1864 May 21]] (Saros 138)
|colspan=2 style="text-align:center;"| [[April 1875 lunar eclipse|1875 Apr 20]] (Saros 139)
|colspan=2 style="text-align:center;"| [[March 1886 lunar eclipse|1886 Mar 20]] (Saros 140)
|colspan=2 style="text-align:center;"| [[February 1897 lunar eclipse|1897 Feb 17]] (Saros 141)
|colspan=2 style="text-align:center;"| [[January 1908 lunar eclipse|1908 Jan 18]] (Saros 142)
|-
|
|
|
|
|
|
|
|
|[[File:Lunar_eclipse_chart close-1908Jan18.png|80px]]
|[[File:Lunar eclipse from moon-1908Jan18.png|80px]]
|-
|colspan=2 style="text-align:center;"| [[December 1918 lunar eclipse|1918 Dec 17]] (Saros 143)
|colspan=2 style="text-align:center;"| [[November 1929 lunar eclipse|1929 Nov 17]] (Saros 144)
|colspan=2 style="text-align:center;"| [[October 1940 lunar eclipse|1940 Oct 16]] (Saros 145)
|colspan=2 style="text-align:center;"| [[September 1951 lunar eclipse|1951 Sep 15]] (Saros 146)
|colspan=2 style="text-align:center;"| [[August 1962 lunar eclipse|1962 Aug 15]] (Saros 147)
|-
|[[File:Lunar_eclipse_chart close-1918Dec17.png|80px]]
|[[File:Lunar eclipse from moon-1918Dec17.png|80px]]
|[[File:Lunar_eclipse_chart close-1929Nov17.png|80px]]
|[[File:Lunar eclipse from moon-1929Nov17.png|80px]]
|[[File:Lunar_eclipse_chart close-1940Oct16.png|80px]]
|[[File:Lunar eclipse from moon-1940Oct16.png|80px]]
|[[File:Lunar_eclipse_chart close-1951Sep15.png|80px]]
|[[File:Lunar eclipse from moon-1951Sep15.png|80px]]
|[[File:Lunar_eclipse_chart close-1962Aug15.png|80px]]
|[[File:Lunar eclipse from moon-1962Aug15.png|80px]]
|-
|colspan=2 style="text-align:center;"| [[July 1973 lunar eclipse|1973 Jul 15]] (Saros 148)
|colspan=2 style="text-align:center;"| 1984 Jun 13 (Saros 149)
|colspan=2 style="text-align:center;"|
|colspan=2 style="text-align:center;"|
|colspan=2 style="text-align:center;"|
|-
|[[File:Lunar_eclipse_chart close-1973Jul15.png|80px]]
|[[File:Lunar eclipse from moon-1973Jul15.png|80px]]
|[[File:Lunar_eclipse_chart close-1984Jun13.png|80px]]
|[[File:Lunar eclipse from moon-1984Jun13.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;"| [[November 2060 lunar eclipse|2060 Nov 08]] (Saros 156)
|-
|
|
|
|
|
|
|[[File:Lunar_eclipse_chart close-2060Nov08.png|80px]]
|[[File:Lunar eclipse from moon-2060Nov08.png|80px]]
|}

=== 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;"| 1984 Jun 13 (Saros 149)
|colspan=2 style="text-align:center;"| [[May 2013 lunar eclipse|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]]
*[[List of 20th-century lunar eclipses]]

== Notes ==
{{reflist}}

== External links ==
* {{LEplot1951 link|1984|Jun|13|N}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1984-06}}
[[Category:20th-century lunar eclipses|1984-06]]
[[Category:1984 in science]]
[[Category:June 1984]]

June 1984 lunar eclipse - Revision history

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