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{{short description|Astronomical event}}
{{Infobox lunar eclipse
| type = penumbral
| image = Lunar eclipse chart close-2027Jul18.png
| caption = The Moon's hourly motion shown right to left
| date = July 18, 2027
| gamma = −1.5759
| magnitude = −1.0662
| saros_ser = 110
| saros_no = 72 of 72
| totality =
| partiality =
| penumbral = 11 minutes, 47 seconds
| p1 = 15:56:57
| u1 =
| u2 =
| greatest = 16:02:53
| u3 =
| u4 =
| p4 = 16:08:45
| previous = February 2027
| next = August 2027
}}
A penumbral [[lunar eclipse]] will occur at the Moon’s [[Lunar node|ascending node]] of orbit on Sunday, July 18, 2027,<ref>{{cite web|title=July 18–19, 2027 Almost Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/2027-july-18|publisher=timeanddate|access-date=19 November 2024}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of −1.0662. 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 16 hours before [[Apsis|apogee]] (on July 19, 2027, at 7:50 UTC), the Moon's apparent diameter will be smaller.<ref>{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=2027&n=136|publisher=timeanddate|access-date=19 November 2024}}</ref>

The Moon will barely clip the edge of the Earth's penumbral shadow, and the eclipse will be impossible to see in practice. The event is listed as a miss by some sources.<ref name="Almost">{{Cite web|url=https://www.timeanddate.com/eclipse/lunar/2027-july-18|title = Almost Lunar Eclipse on July 18-19, 2027 – Where and when to See}}</ref>

== Visibility ==
The eclipse will be completely visible over [[Asia]], [[east Africa]], and [[Australia]].<ref>{{cite web|title=Penumbral Lunar Eclipse of 2027 Jul 18|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2027Jul18N.pdf|publisher=NASA|access-date=19 November 2024}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-2027Jul18.png|300px]] [[File:Lunar eclipse chart close-2027Jul18.png|300px]]
|}

== Eclipse details ==
Shown below is a table displaying details about this particular eclipse. It describes various parameters pertaining to this eclipse.<ref>{{cite web|title=Penumbral Lunar Eclipse of 2027 Jul 18|url=https://eclipsewise.com/lunar/LEprime/2001-2100/LE2027Jul18Nprime.html|publisher=EclipseWise.com|access-date=19 November 2024}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+July 18, 2027 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 0.00320
|-
| Umbral Magnitude
| −1.06620
|-
| Gamma
| −1.57589
|-
| Sun Right Ascension
| 07h51m14.4s
|-
| Sun Declination
| +20°58'43.6"
|-
| Sun Semi-Diameter
| 15'44.3"
|-
| Sun Equatorial Horizontal Parallax
| 08.7"
|-
| Moon Right Ascension
| 19h52m57.2s
|-
| Moon Declination
| -22°20'25.3"
|-
| Moon Semi-Diameter
| 14'43.0"
|-
| Moon Equatorial Horizontal Parallax
| 0°54'00.6"
|-
| ΔT
| 72.7 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 July–August 2027
! July 18 Ascending node (full moon) !! [[Solar eclipse of August 2, 2027|August 2]] Descending node (new moon) !! [[August 2027 lunar eclipse|August 17]] Ascending node (full moon) 
|-
| [[File:Lunar eclipse chart close-2027Jul18.png|200px]] || [[File:SE2027Aug02T.png|200px]] || [[File:Lunar eclipse chart close-2027Aug17.png|200px]]
|- align=center
| [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 110 || [[Total eclipse#Types|Total solar eclipse]] Solar Saros 136 || [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 148
|}

== Related eclipses ==
=== Eclipses in 2027 ===
* [[Solar eclipse of February 6, 2027|An annular solar eclipse on February 6]].
* [[February 2027 lunar eclipse|A penumbral lunar eclipse on February 20]].
* '''A penumbral lunar eclipse on July 18.'''
* [[Solar eclipse of August 2, 2027|A total solar eclipse on August 2]].
* [[August 2027 lunar eclipse|A penumbral lunar eclipse on August 17]].

=== Metonic ===
* Followed by: [[May 2031 lunar eclipse|Lunar eclipse of May 7, 2031]]

=== Tzolkinex ===
* Preceded by: [[June 2020 lunar eclipse|Lunar eclipse of June 5, 2020]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of July 13, 2018]]
* Followed by: [[Solar eclipse of July 23, 2036]]

=== Tritos ===
* Preceded by: [[August 2016 lunar eclipse|Lunar eclipse of August 18, 2016]]
* Followed by: [[June 2038 lunar eclipse|Lunar eclipse of June 17, 2038]]

=== Lunar Saros 110 ===
* Preceded by: [[July 2009 lunar eclipse|Lunar eclipse of July 7, 2009]]

=== Inex ===
* Preceded by: [[August 1998 lunar eclipse|Lunar eclipse of August 8, 1998]]
* Followed by: [[June 2056 lunar eclipse|Lunar eclipse of June 27, 2056]]

=== Triad ===
* Followed by: [[May 2114 lunar eclipse|Lunar eclipse of May 19, 2114]]

=== Lunar eclipses of 2027–2031 ===
{{Lunar eclipse set 2027-2031}}

=== Saros 110 ===
{{Lunar Saros series 110}}

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

{| class="wikitable mw-collapsible mw-collapsed"
!colspan=10| Series members between 1940 and 2200
|-
|colspan=2 style="text-align:center;"| [[March 1940 lunar eclipse|1940 Mar 23]] (Saros 102)
|colspan=2 style="text-align:center;"| [[February 1951 lunar eclipse|1951 Feb 21]] (Saros 103)
|colspan=2 style="text-align:center;"|
|colspan=2 style="text-align:center;"|
|colspan=2 style="text-align:center;"|
|-
|[[File:Lunar_eclipse_chart close-1940Mar23.png|80px]]
|[[File:Lunar eclipse from moon-1940Mar23.png|80px]]
|[[File:Lunar_eclipse_chart close-1951Feb21.png|80px]]
|[[File:Lunar eclipse from moon-1951Feb21.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;"| 2027 Jul 18 (Saros 110)
|colspan=2 style="text-align:center;"| [[June 2038 lunar eclipse|2038 Jun 17]] (Saros 111)
|-
|
|
|
|
|
|
|[[File:Lunar_eclipse_chart close-2027Jul18.png|80px]]
|[[File:Lunar eclipse from moon-2027Jul18.png|80px]]
|[[File:Lunar_eclipse_chart close-2038Jun17.png|80px]]
|[[File:Lunar eclipse from moon-2038Jun17.png|80px]]
|-
|colspan=2 style="text-align:center;"| [[May 2049 lunar eclipse|2049 May 17]] (Saros 112)
|colspan=2 style="text-align:center;"| [[April 2060 lunar eclipse|2060 Apr 15]] (Saros 113)
|colspan=2 style="text-align:center;"| [[March 2071 lunar eclipse|2071 Mar 16]] (Saros 114)
|colspan=2 style="text-align:center;"| [[February 2082 lunar eclipse|2082 Feb 13]] (Saros 115)
|colspan=2 style="text-align:center;"| [[January 2093 lunar eclipse|2093 Jan 12]] (Saros 116)
|-
|[[File:Lunar_eclipse_chart close-2049May17.png|80px]]
|[[File:Lunar eclipse from moon-2049May17.png|80px]]
|
|
|
|
|
|
|
|
|-
|colspan=2 style="text-align:center;"| [[December 2103 lunar eclipse|2103 Dec 13]] (Saros 117)
|colspan=2 style="text-align:center;"| [[November 2114 lunar eclipse|2114 Nov 12]] (Saros 118)
|colspan=2 style="text-align:center;"| [[October 2125 lunar eclipse|2125 Oct 12]] (Saros 119)
|colspan=2 style="text-align:center;"| [[September 2136 lunar eclipse|2136 Sep 10]] (Saros 120)
|colspan=2 style="text-align:center;"| [[August 2147 lunar eclipse|2147 Aug 11]] (Saros 121)
|-
|
|
|
|
|
|
|
|
|
|
|-
|colspan=2 style="text-align:center;"| [[July 2158 lunar eclipse|2158 Jul 11]] (Saros 122)
|colspan=2 style="text-align:center;"| [[June 2169 lunar eclipse|2169 Jun 09]] (Saros 123)
|colspan=2 style="text-align:center;"| [[May 2180 lunar eclipse|2180 May 09]] (Saros 124)
|colspan=2 style="text-align:center;"| [[April 2191 lunar eclipse|2191 Apr 09]] (Saros 125)
|-
|
|
|
|
|
|
|
|
|}

=== Inex series ===
{{Lunar Inex series July 2027}}

=== 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 117]].
{| class=wikitable
![[Solar eclipse of July 13, 2018|July 13, 2018]]
![[Solar eclipse of July 23, 2036|July 23, 2036]]
|-
|[[File:SE2018Jul13P.png|240px]]
|[[File:SE2036Jul23P.png|240px]]
|}

== See also ==
*[[List of lunar eclipses]] and [[List of 21st-century lunar eclipses]]
*[[August 2016 lunar eclipse]]

== Notes ==
{{reflist}}

== External links ==
* {{LEplot2001 link|2027|Jul|18|N}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 2027-07}}
[[Category:21st-century lunar eclipses|2027-07]]
[[Category:Future lunar eclipses|2027-07]]
[[Category:2027 in science]]

July 2027 lunar eclipse - Revision history

imported>BunnysBot: /* Tritos series */ Fix CW Errors with GenFixes (T1)