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Fix CW Errors with GenFixes (T1), removed stub tag

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{{short description|Astronomical event}}
{{Infobox lunar eclipse
| type = penumbral
| image = Lunar eclipse chart close-1987Oct07.png
| caption = The Moon's hourly motion shown right to left
| date = October 7, 1987
| gamma = 1.0189
| magnitude = −0.0095
| saros_ser = 146
| saros_no = 9 of 72
| penumbral = 253 minutes, 28 seconds
| p1 = 1:54:49
| greatest = 4:01:35
| p4 = 6:08:17
| previous = April 1987
| next = March 1988
}}
A penumbral [[lunar eclipse]] occurred at the Moon’s [[Lunar node|ascending node]] of orbit on Wednesday, October 7, 1987,<ref>{{cite web|title=October 6–7, 1987 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1987-october-7|publisher=timeanddate|access-date=6 January 2025}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of −0.0095. 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 3.1 days after [[Apsis|perigee]] (on October 4, 1987, at 1:35 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 much of [[North America]], [[South America]], [[west Africa]], and [[western Europe]], seen rising over northwestern North America and the central [[Pacific Ocean]] and setting over much of [[Africa]], [[Europe]], and [[west Asia|west]] and [[central Asia]].<ref>{{cite web|title=Penumbral Lunar Eclipse of 1987 Oct 07|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1987Oct07N.pdf|publisher=NASA|access-date=6 January 2025}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1987Oct07.png|300px]] [[File:Lunar eclipse chart close-1987Oct07.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 Oct 07|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1987Oct07Nprime.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}}"
|+October 7, 1987 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 0.98640
|-
| Umbral Magnitude
| −0.00949
|-
| Gamma
| 1.01890
|-
| Sun Right Ascension
| 12h49m09.5s
|-
| Sun Declination
| -05°16'24.7"
|-
| Sun Semi-Diameter
| 16'00.1"
|-
| Sun Equatorial Horizontal Parallax
| 08.8"
|-
| Moon Right Ascension
| 00h47m14.4s
|-
| Moon Declination
| +06°09'13.6"
|-
| Moon Semi-Diameter
| 16'04.0"
|-
| Moon Equatorial Horizontal Parallax
| 0°58'58.1"
|-
| ΔT
| 55.6 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 September–October 1987
! [[Solar eclipse of September 23, 1987|September 23]] Descending node (new moon) !! October 7 Ascending node (full moon) 
|-
| [[File:SE1987Sep23A.png|200px]] || [[File:Lunar eclipse chart close-1987Oct07.png|200px]]
|- align=center
| [[Total eclipse#Types|Annular solar eclipse]] Solar Saros 134 || [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 146
|}

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

=== Metonic ===
* Preceded by: [[December 1983 lunar eclipse|Lunar eclipse of December 20, 1983]]
* Followed by: [[July 1991 lunar eclipse|Lunar eclipse of July 26, 1991]]

=== Tzolkinex ===
* Preceded by: [[August 1980 lunar eclipse|Lunar eclipse of August 26, 1980]]
* Followed by: [[November 1994 lunar eclipse|Lunar eclipse of November 18, 1994]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of October 2, 1978]]
* Followed by: [[Solar eclipse of October 12, 1996]]

=== Tritos ===
* Preceded by: [[November 1976 lunar eclipse|Lunar eclipse of November 6, 1976]]
* Followed by: [[September 1998 lunar eclipse|Lunar eclipse of September 6, 1998]]

=== Lunar Saros 146 ===
* Preceded by: [[September 1969 lunar eclipse|Lunar eclipse of September 25, 1969]]
* Followed by: [[October 2005 lunar eclipse|Lunar eclipse of October 17, 2005]]

=== Inex ===
* Preceded by: [[October 1958 lunar eclipse|Lunar eclipse of October 27, 1958]]
* Followed by: [[September 2016 lunar eclipse|Lunar eclipse of September 16, 2016]]

=== Triad ===
* Preceded by: [[December 1900 lunar eclipse|Lunar eclipse of December 6, 1900]]
* Followed by: [[August 2074 lunar eclipse|Lunar eclipse of August 7, 2074]]

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

=== Saros 146 ===
{{Lunar Saros series 146}}

=== Tritos series ===
{{Lunar Tritos series August 2009}}

=== Inex series ===
{{Lunar Inex series September 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 153]].
{| class=wikitable
![[Solar eclipse of October 2, 1978|October 2, 1978]]
![[Solar eclipse of October 12, 1996|October 12, 1996]]
|-
|[[File:SE1978Oct02P.png|240px]]
|[[File:SE1996Oct12P.png|240px]]
|}

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

== Notes ==
{{reflist}}

==External links ==
* {{LEplot1951 link|1987|Oct|07|N}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1987-10}}
[[Category:20th-century lunar eclipses|1987-10]]
[[Category:1987 in science]]
[[Category:October 1987]]

October 1987 lunar eclipse - Revision history

imported>BunnysBot: Fix CW Errors with GenFixes (T1), removed stub tag