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{{short description|Penumbral lunar eclipse in 2020}}
{{Use dmy dates|date=August 2018}}
{{Infobox lunar eclipse
| type = penumbral
| image = Penumbral Lunar Eclipse 2020-01-10-single.jpg
| caption = Near greatest eclipse in [[Austria]], 19:10 UTC
| date = 10 January 2020
| gamma = 1.0726
| magnitude = −0.1146
| saros_ser = 144
| saros_no = 16 of 71
| penumbral = 244 minutes, 34 seconds
| p1 = 17:07:45
| greatest = 19:09:59
| p4 = 21:12:19
| previous = July 2019
| next = June 2020
}}
A penumbral [[lunar eclipse]] occurred at the Moon’s [[Lunar node|ascending node]] of orbit on Friday, 10 January 2020,<ref>{{cite web|title=January 10–11, 2020 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/2020-january-10|publisher=timeanddate|access-date=17 November 2024}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of −0.1146. 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 2.8 days before [[Apsis|perigee]] (on 13 January 2020, at 15:20 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=2020&n=136|publisher=timeanddate|access-date=17 November 2024}}</ref>

This eclipse was the first of four penumbral lunar eclipses in 2020, with the others occurring on [[June 2020 lunar eclipse|5 June]], [[July 2020 lunar eclipse|5 July]], and [[November 2020 lunar eclipse|30 November]].

== Visibility ==
The eclipse was completely visible over [[east Africa]], [[Europe]], and [[Asia]], seen rising over the [[west Africa]] and northern [[North America]] and setting over [[Australia]] and the central [[Pacific Ocean]].<ref>{{cite web|title=Penumbral Lunar Eclipse of 2020 Jan 10|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2020Jan10N.pdf|publisher=NASA|access-date=17 November 2024}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-2020Jan10.png|315px]] [[File:Lunar eclipse chart close-2020Jan10.png|315px]]
|- align=center
|[[File:Visibility Lunar Eclipse 2020-01-10.png|640px]] Visibility map
|}

== Gallery ==
<gallery>
File:Penumbral Lunar Eclipse on January 10, 2020 (49363633603).jpg|[[Oria, Italy]], 18:09 UTC
File:January 10, 2020 Lunar Eclipse.jpg|[[San Jose del Monte]], Philippines, 18:47 UTC
File:Lunar eclipse of January 2020.jpg|[[Colombo, Sri Lanka]], 19:03 UTC
File:Penumbral Lunar Eclipse January 10th 2020.jpg|[[Ham, Belgium]], 19:08 UTC
File:Penumbral Lunar Eclipse.jpg|[[Tilehurst]], [[England]], 19:10 UTC
File:Lunar eclipse 10Jan2020 Mosul.png|[[Mosul]], [[Iraq]], 19:29 UTC
File:Lunar eclipse of 2020 January 10 - Pamplona - 9.jpg|[[Pamplona, Spain]], 20:19 UTC
File:Penumbral Lunar Eclipse 2020-01-10.jpg|Eclipse sequence from [[Austria]], 18:10–20:10 UTC
</gallery>

== 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 2020 Jan 10|url=https://eclipsewise.com/lunar/LEprime/2001-2100/LE2020Jan10Nprime.html|publisher=EclipseWise.com|access-date=17 November 2024}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+10 January 2020 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 0.89692
|-
| Umbral Magnitude
| −0.11460
|-
| Gamma
| 1.07270
|-
| Sun Right Ascension
| 19h26m32.0s
|-
| Sun Declination
| -21°56'49.6"
|-
| Sun Semi-Diameter
| 16'15.9"
|-
| Sun Equatorial Horizontal Parallax
| 08.9"
|-
| Moon Right Ascension
| 07h26m45.8s
|-
| Moon Declination
| +23°00'02.8"
|-
| Moon Semi-Diameter
| 16'04.8"
|-
| Moon Equatorial Horizontal Parallax
| 0°59'00.8"
|-
| ΔT
| 69.5 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 December 2019–January 2020
! [[Solar eclipse of December 26, 2019|26 December]] Descending node (new moon) !! 10 January Ascending node (full moon) 
|-
| [[File:SE2019Dec26A.png|200px]] || [[File:Lunar eclipse chart close-2020Jan10.png|200px]]
|- align=center
| [[Total eclipse#Types|Annular solar eclipse]] Solar Saros 132 || [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 144
|}

== Related eclipses ==
=== Eclipses in 2020 ===
* '''A penumbral lunar eclipse on 10 January.'''
* [[June 2020 lunar eclipse|A penumbral lunar eclipse on June 5]].
* [[Solar eclipse of June 21, 2020|An annular solar eclipse on June 21]].
* [[July 2020 lunar eclipse|A penumbral lunar eclipse on July 5]].
* [[November 2020 lunar eclipse|A penumbral lunar eclipse on November 30]].
* [[Solar eclipse of December 14, 2020|A total solar eclipse on December 14]].

=== Metonic ===
* Preceded by: [[March 2016 lunar eclipse|Lunar eclipse of March 23, 2016]]
* Followed by: [[October 2023 lunar eclipse|Lunar eclipse of October 28, 2023]]

=== Tzolkinex ===
* Preceded by: [[November 2012 lunar eclipse|Lunar eclipse of November 28, 2012]]
* Followed by: [[February 2027 lunar eclipse|Lunar eclipse of February 20, 2027]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of January 4, 2011]]
* Followed by: [[Solar eclipse of January 14, 2029]]

=== Tritos ===
* Preceded by: [[February 2009 lunar eclipse|Lunar eclipse of February 9, 2009]]
* Followed by: [[December 2030 lunar eclipse|Lunar eclipse of December 9, 2030]]

=== Lunar Saros 144 ===
* Preceded by: [[December 2001 lunar eclipse|Lunar eclipse of December 30, 2001]]
* Followed by: [[January 2038 lunar eclipse|Lunar eclipse of January 21, 2038]]

=== Inex ===
* Preceded by: [[January 1991 lunar eclipse|Lunar eclipse of January 30, 1991]]
* Followed by: [[December 2048 lunar eclipse|Lunar eclipse of December 20, 2048]]

=== Triad ===
* Preceded by: [[March 1933 lunar eclipse|Lunar eclipse of March 12, 1933]]
* Followed by: [[November 2106 lunar eclipse|Lunar eclipse of November 11, 2106]]

=== Lunar eclipses of 2016–2020 ===
{{Lunar eclipse set 2016-2020}}

=== Saros 144 ===
{{Lunar Saros series 144}}

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

=== Inex series ===
{{Lunar Inex series January 2020}}

=== 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>{{cite book | title=Mathematical Astronomy Morsels | first=Jean | last=Meeus | page=110 | chapter=18, The half-saros}}</ref> This lunar eclipse is related to two partial solar eclipses of [[Solar Saros 151]].
{| class=wikitable
![[Solar eclipse of January 4, 2011|January 4, 2011]]
![[Solar eclipse of January 14, 2029|January 14, 2029]]
|-
|[[File:SE2011Jan04P.png|240px]]
|[[File:SE2029Jan14P.png|240px]]
|}

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

==References==
{{Reflist}}

== External links ==
* {{LEplot2001 link|2020|Jan|10|N}}
* [http://www.hermit.org/eclipse/gen_stats.cgi?mode=query&page=full&qtype=type&body=L&saros=144 Hermit eclipse: Saros cycle 144]
* [http://www.hermit.org/Eclipse/when_lunars.html Hermit eclipse: 10 Jan 2020 - Penumbral Lunar Eclipse]

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 2020-01}}
[[Category:21st-century lunar eclipses|2020-01]]
[[Category:2020 in science]]
[[Category:January 2020]]

January 2020 lunar eclipse - Revision history

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