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Related eclipses

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{{Short description|Penumbral lunar eclipse April 14, 1987}}
{{Infobox lunar eclipse
| type = penumbral
| image = Lunar eclipse chart close-1987Apr14.png
| caption = The Moon's hourly motion shown right to left
| date = April 14, 1987
| gamma = −1.1364
| magnitude = −0.2312
| saros_ser = 141
| saros_no = 22 of 73
| penumbral = 234 minutes, 8 seconds
| p1 = 0:21:55
| greatest = 2:18:54
| p4 = 4:16:03
| previous = October 1986
| next = October 1987
}}
A penumbral [[lunar eclipse]] occurred at the Moon’s [[Lunar node|descending node]] of orbit on Tuesday, April 14, 1987,<ref>{{cite web|title=April 13–14, 1987 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1987-april-14|publisher=timeanddate|access-date=6 January 2025}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of −0.2312. 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 4.6 days before [[Apsis|perigee]] (on April 18, 1987, at 17:35 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=1987&n=136|publisher=timeanddate|access-date=6 January 2025}}</ref>

== Visibility ==
The eclipse was completely visible over eastern [[North America]], [[South America]], [[western Europe]], [[west Africa|west]] and [[central Africa]], and [[Antarctica]], seen rising over western and central North America and the eastern [[Pacific Ocean]] and setting over [[east Africa]], [[eastern Europe]], and [[west Asia|west]], [[central Asia|central]], and [[south Asia]].<ref>{{cite web|title=Penumbral Lunar Eclipse of 1987 Apr 14|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1987Apr14N.pdf|publisher=NASA|access-date=6 January 2025}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1987Apr14.png|300px]] [[File:Lunar eclipse chart close-1987Apr14.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 1987 Apr 14|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1987Apr14Nprime.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}}"
|+April 14, 1987 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 0.77703
|-
| Umbral Magnitude
| −0.23122
|-
| Gamma
| −1.13641
|-
| Sun Right Ascension
| 01h27m26.1s
|-
| Sun Declination
| +09°10'16.8"
|-
| Sun Semi-Diameter
| 15'56.9"
|-
| Sun Equatorial Horizontal Parallax
| 08.8"
|-
| Moon Right Ascension
| 13h25m23.5s
|-
| Moon Declination
| -10°08'55.4"
|-
| Moon Semi-Diameter
| 15'49.1"
|-
| Moon Equatorial Horizontal Parallax
| 0°58'03.2"
|-
| ΔT
| 55.4 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 March–April 1987
! [[Solar eclipse of March 29, 1987|March 29]] Ascending node (new moon) !! [[April 1987 lunar eclipse|April 14]] Descending node (full moon) 
|-
| [[File:SE1987Mar29H.png|200px]] || [[File:Lunar eclipse chart close-1987Apr14.png|200px]]
|- align=center
| [[Total eclipse#Types|Hybrid solar eclipse]] Solar Saros 129 || [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 141
|}

== Related eclipses ==
=== Eclipses in 1987 ===
* [[Solar eclipse of March 29, 1987|A hybrid solar eclipse on March 29]].
* '''A penumbral lunar eclipse on April 14.'''
* [[Solar eclipse of September 23, 1987|An annular solar eclipse on September 23]].
* [[October 1987 lunar eclipse|A penumbral lunar eclipse on October 7]].

=== Metonic ===
* Preceded by: [[June 1983 lunar eclipse|Lunar eclipse of June 25, 1983]]
* Followed by: [[January 1991 lunar eclipse|Lunar eclipse of January 30, 1991]]

=== Tzolkinex ===
* Preceded by: [[March 1980 lunar eclipse|Lunar eclipse of March 1, 1980]]
* Followed by: [[May 1994 lunar eclipse|Lunar eclipse of May 25, 1994]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of April 7, 1978]]
* Followed by: [[Solar eclipse of April 17, 1996]]

=== Tritos ===
* Preceded by: [[May 1976 lunar eclipse|Lunar eclipse of May 13, 1976]]
* Followed by: [[March 1998 lunar eclipse|Lunar eclipse of March 13, 1998]]

=== Lunar Saros 141 ===
* Preceded by: [[April 1969 lunar eclipse|Lunar eclipse of April 2, 1969]]
* Followed by: [[April 2005 lunar eclipse|Lunar eclipse of April 24, 2005]]

=== Inex ===
* Preceded by: [[May 1958 lunar eclipse|Lunar eclipse of May 3, 1958]]
* Followed by: [[March 2016 lunar eclipse|Lunar eclipse of March 23, 2016]]

=== Triad ===
* Preceded by: [[June 1900 lunar eclipse|Lunar eclipse of June 13, 1900]]
* Followed by: [[February 2074 lunar eclipse|Lunar eclipse of February 11, 2074]]

=== Lunar eclipses of 1984–1987 ===
{{Lunar eclipse set 1984-1987}}

=== Saros 141 ===
{{Lunar Saros series 141}}

=== Tritos series ===
{{Lunar Tritos series February 2009}}

=== Inex series ===
{{Lunar Inex series March 2016}}

=== 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 partial solar eclipses of [[Solar Saros 148]].
{| class=wikitable
![[Solar eclipse of April 7, 1978|April 7, 1978]]
![[Solar eclipse of April 17, 1996|April 17, 1996]]
|-
|[[File:SE1978Apr07P.png|240px]]
|[[File:SE1996Apr17P.png|240px]]
|}

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

== Notes ==
{{reflist}}

==External links ==
* {{LEplot1951 link|1987|Apr|14|N}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1987-04}}
[[Category:20th-century lunar eclipses|1987-04]]
[[Category:1987 in science]]
[[Category:April 1987]]
[[Category:Lunar eclipses]]

{{lunar-eclipse-stub}}

April 1987 lunar eclipse - Revision history

imported>Weatherman4064: /* Related eclipses */