imported>Weatherman4064: /* Related eclipses */

2025-03-05T05:56:38Z

Related eclipses

New page

{{Short description|Total lunar eclipse of 4 April 2015}}
{{Use dmy dates|date=August 2018}}
{{Infobox lunar eclipse
| type = total
| image = Lunar eclipse April 4 2015 greatest Alfredo Garcia Jr LA.jpg
| caption = Totality as viewed from [[Los Angeles, California]], 12:00 UTC
| date = April 4, 2015
| gamma = 0.4460
| magnitude = 1.0019
| saros_ser = 132
| saros_no = 30 of 71
| totality = 4 minutes, 43 seconds
| partiality = 209 minutes, 1 second
| penumbral = 357 minutes, 31 seconds
| p1 = 09:01:27
| u1 = 10:15:45
| u2 = 11:57:54
| greatest = 12:00:15
| u3 = 12:02:37
| u4 = 13:44:46
| p4 = 14:58:58
| previous = October 2014
| next = September 2015
}}
A total [[lunar eclipse]] occurred at the Moon’s [[Lunar node|ascending node]] of orbit on Saturday, April 4, 2015,<ref>{{cite web|title=April 4, 2015 Total Lunar Eclipse (Blood Moon)|url=https://www.timeanddate.com/eclipse/lunar/2015-april-4|publisher=timeanddate|access-date=16 November 2024}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of 1.0019. A lunar eclipse occurs when the [[Moon]] moves into the [[Earth's shadow]], causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's [[Umbra, penumbra and antumbra|shadow]] is smaller. Occurring about 3.1 days after [[Apsis|apogee]] (on April 1, 2015, at 9:00 UTC), the Moon's apparent diameter was smaller.<ref>{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=2015&n=136|publisher=timeanddate|access-date=16 November 2024}}</ref>

This lunar eclipse is the third of a [[Tetrad (astronomy)|tetrad]], with four total lunar eclipses in series, the others being on [[April 2014 lunar eclipse|April 15, 2014]]; [[October 2014 lunar eclipse|October 8, 2014]]; and [[September 2015 lunar eclipse|September 28, 2015]].

This is the 30th member of [[Lunar Saros 132]], and the first total eclipse of the series. The previous event was the [[March 1997 lunar eclipse]], being slightly partial.

It occurred on [[Easter Sunday]] ([[Gregorian calendar|Gregorian]] only).<ref name="Mus2002">{{cite book |date=2002 |first=Jan |last=Meeus |title=More Mathematical Astronomy Morsels |isbn=0943396743 |url=https://falakmu.id/khgt/dokumen/More%20mathematical%20astronomy%20morsels%20(Jean%20Meeus)%20(Z-Library).pdf}}</ref>{{rp|152}}

== Duration ==
Totality lasted only 4 minutes and 43 seconds,<ref>{{cite web |last=Espenak |first=Fred |title=Total Lunar Eclipse of 2015 Apr 04 |url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2015Apr04T.pdf |publisher=NASA's GSFC}}</ref> making it the shortest lunar totality in almost five centuries since October 17, 1529 (which lasted 1 minute and 42 seconds). It was claimed by some that due to the oblateness of the Earth, it may have actually just been a partial eclipse.<ref>{{Cite news|url=http://www.skyandtelescope.com/astronomy-news/observing-news/the-lunar-eclipse-wasnt-total-after-all-04062015/|title = The Lunar Eclipse Wasn't Total After All?!| newspaper=Sky & Telescope |date = 6 April 2015}}</ref> It was the sixth total lunar eclipse out of nine with totality under 5 minutes in a five millennium period between 2,000 BC and 3,000 AD. The eclipsed moon was 12.9% smaller in apparent diameter than the supermoon [[September 2015 lunar eclipse]], measured as 29.66' and 33.47' in diameter from the center of the Earth. It occurred 3 days past [[apogee]] at 29.42'.
:[[File:Supermoon lunar eclipse 2015.png|320px]]

== Background ==
{{main|Lunar eclipse}}
A lunar eclipse occurs when the Moon passes within Earth's [[umbra]] (shadow). As the eclipse begins, Earth's shadow first darkens the Moon slightly. Then, the shadow begins to "cover" part of the Moon, turning it a dark red-brown color (typically - the color can vary based on atmospheric conditions). The Moon appears to be reddish because of [[Rayleigh scattering]] (the same effect that causes sunsets to appear reddish) and the refraction of that light by Earth's atmosphere into its umbra.<ref>{{cite web|title=Visual Appearance of Lunar Eclipses|work=NASA|author=Fred Espenak and Jean Meeus|url=http://eclipse.gsfc.nasa.gov/LEcat5/appearance.html|access-date=April 13, 2014}}</ref>

The following simulation shows the approximate appearance of the Moon passing through Earth's shadow. The Moon's brightness is exaggerated within the umbral shadow. The southern portion of the Moon will be closest to the center of the shadow, making it darkest, and most red in appearance.

[[File:Animation April 4 2015 lunar eclipse appearance.gif]]

== Visibility ==
The eclipse was completely visible over [[northeast Asia]], eastern [[Australia]], the [[Pacific Ocean]], and western [[North America]], seen rising over [[Asia]] and western Australia and setting over [[North America|North]] and [[South America]].<ref>{{cite web|title=Total Lunar Eclipse of 2015 Apr 04|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2015Apr04T.pdf|publisher=NASA|access-date=16 November 2024}}</ref>

{| class=wikitable width=480
|[[File:Lunar eclipse from moon-2015Apr04.png|315px]] [[File:Lunar eclipse chart close-2015Apr04.png|315px]]
|- align=center
|[[File:Visibility Lunar Eclipse 2015-04-04.png|640px]] Visibility map
|}

== Timing ==
{| class="wikitable"
|+ Local times of contacts
|- valign=top
! colspan=2 rowspan=2| Time Zone adjustments from [[UTC]]
! [[UTC+08:00|+8h]]
! [[UTC+11:00|+11h]]
! [[UTC+13:00|+13h]]
! [[UTC−10:00|-10h]]
! [[UTC−08:00|-8h]]
! [[UTC−07:00|-7h]]
! [[UTC−06:00|-6h]]
! [[UTC−05:00|-5h]]
! [[UTC−04:00|-4h]]
|- valign=top
! [[Australian Western Standard Time|AWST]]
! [[Australian Eastern Daylight Time|AEDT]]
! [[Time in New Zealand|NZDT]]
! [[Hawaii–Aleutian Time Zone|HST]]
! [[Alaska Daylight Time|AKDT]]
! [[Pacific Daylight Time|PDT]]
! [[Mountain Daylight Time|MDT]]
! [[Central Time Zone (North America)|CDT]]
! [[Eastern Daylight Time|EDT]]
|- align=center
!colspan=2|Event
|colspan=3|Evening April 4||colspan=9 BGCOLOR="#e0e0f0"|Morning April 4
|- align=center
!P1
! Penumbral begins
| N/A†
| 8:01 pm
| 10:01 pm
| 11:01 pm
| BGCOLOR="#e0e0f0"| 1:01 am
| BGCOLOR="#e0e0f0"| 2:01 am
| BGCOLOR="#e0e0f0"| 3:01 am
| BGCOLOR="#e0e0f0"| 4:01 am
| BGCOLOR="#e0e0f0"| 5:01 am
|- align=center
!U1
! Partial begins
| 6:16 pm
| 9:16 pm
| 11:16 pm
| BGCOLOR="#e0e0f0"| 12:16 am
| BGCOLOR="#e0e0f0"| 2:16 am
| BGCOLOR="#e0e0f0"| 3:16 am
| BGCOLOR="#e0e0f0"| 4:16 am
| BGCOLOR="#e0e0f0"| 5:16 am
| BGCOLOR="#e0e0f0"| 6:16 am
|- align=center
!U2
! Total begins
| 7:58 pm
| 10:58 pm
| BGCOLOR="#e0ffe0"|12:58 am
| BGCOLOR="#e0e0f0"|1:58 am
| BGCOLOR="#e0e0f0"|3:58 am
| BGCOLOR="#e0e0f0"|4:58 am
| BGCOLOR="#e0e0f0"|5:58 am
| BGCOLOR="#e0e0f0"|6:58 am
| Set
|- align=center
!
! Greatest eclipse
| 8:00 pm
| 11:00 pm
| BGCOLOR="#e0ffe0"| 1:00 am
| BGCOLOR="#e0e0f0"| 2:00 am
| BGCOLOR="#e0e0f0"| 4:00 am
| BGCOLOR="#e0e0f0"| 5:00 am
| BGCOLOR="#e0e0f0"| 6:00 am
| BGCOLOR="#e0e0f0"| 7:00 am
| Set
|- align=center
!U3
! Total ends
| 8:03 pm
| 11:03 pm
| BGCOLOR="#e0ffe0"| 1:03 am
| BGCOLOR="#e0e0f0"| 2:03 am
| BGCOLOR="#e0e0f0"| 4:03 am
| BGCOLOR="#e0e0f0"| 5:03 am
| BGCOLOR="#e0e0f0"| 6:03 am
| Set
| Set
|- align=center
!U4
! Partial ends
| 9:45 pm
| BGCOLOR="#e0ffe0"| 12:45 am
| BGCOLOR="#e0ffe0"| 2:45 am
| BGCOLOR="#e0e0f0"| 3:45 am
| BGCOLOR="#e0e0f0"| 5:45 am
| Set
| Set
| Set
| Set
|- align=center
!P4
! Penumbral ends
| 10:59 pm
| BGCOLOR="#e0ffe0"| 1:59 am
| BGCOLOR="#e0ffe0"| 3:59 am
| BGCOLOR="#e0e0f0"| 3:59 am
| BGCOLOR="#e0e0f0"| 5:59 am
| Set
| Set
| Set
| Set
|}
† The Moon was not visible during this part of the eclipse in this time zone.
[[File:Lunar eclipse contact diagram.svg|thumb|Contact points relative to the Earth's umbral and penumbral shadows, here with the Moon near its descending node.]]
{{Total lunar eclipse contacts}}
{{Clear}}

== Gallery ==
{| class=wikitable
|- align=center
|colspan=2|[[File:Lunar Eclipse phase.jpg|640px]] Progression from [[Bali, Indonesia]]
|- align=center
|colspan=1 width=320|[[File:Total eclipse of the moon on 4 Apr. 2015, Taiwan (16415899064).jpg|320px]] Time-lapsed image from [[Taiwan]]
|colspan=1 width=320|[[File:April 4 Eclipse (16826858317).jpg|320px]] Sequence from [[Fox Observatory]] in [[Sunrise, Florida]]
|- align=center
|colspan=1 width=320|[[File:Lunar Eclipse - April 4, 2015 from Melbourne (FL) (16410545874).jpg|320px]] Sequence from [[Melbourne, Florida]]
|colspan=1 width=320|[[File:Fading Moon (16867776368).jpg|320px]] Progression from [[St. Louis, Missouri]]
|}
<gallery>
Blood moon full moon 1 (17006372266).jpg|[[Toronto, Canada]], 9:54 UTC
Eclipse IMG 2484 (21723633221).jpg|[[Auckland, New Zealand]], 9:54 UTC
Partial Lunar Eclipse (17037101365).jpg|[[Macon, Georgia]], 10:54 UTC
Lunar eclipse of 2015 April 4 from Mexico City.jpg|[[Mexico City, Mexico]], 10:59 UTC
Lunar eclipse Apr04-2015-TLR2.png|[[Minneapolis, Minnesota]], 11:09 UTC
Partial Lunar Eclipse (17028424751).jpg|[[Chicago, Illinois]], 11:36 UTC
Red moon (17029581355).jpg|[[Melbourne, Australia]], 11:46 UTC
Lunar Eclipse, 2015-04-04 (9) (16418355164).jpg|[[Denver, Colorado]], 11:50 UTC
April 4th's Lunar Eclipse (17032923825).jpg|[[Tai Po]], Hong Kong, 12:01 UTC
Lunar Eclipse April 2015.JPG|[[Santa Clara County, California]], 12:02 UTC
Lunar eclipse (16822666267).jpg|[[Las Vegas, Nevada]], 12:03 UTC
Lunar Eclipse 04-03-2015 (16859149379).jpg|[[Rio Rancho, New Mexico]], 12:13 UTC
Lunar Eclipse 4 April 2015 bangkok.jpg|[[Bangkok, Thailand]], 12:37 UTC
Hi again, Lunar. (16407602854).jpg|[[Hirosaki, Aomori]], 12:56 UTC
Lunar Eclipse 4th April 2015.JPG|[[Pune, India]], 13:38 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=Total Lunar Eclipse of 2015 Apr 04|url=https://eclipsewise.com/lunar/LEprime/2001-2100/LE2015Apr04Tprime.html|publisher=EclipseWise.com|access-date=16 November 2024}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+April 4, 2015 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 2.08024
|-
| Umbral Magnitude
| 1.00191
|-
| Gamma
| 0.44599
|-
| Sun Right Ascension
| 00h53m01.2s
|-
| Sun Declination
| +05°40'32.8"
|-
| Sun Semi-Diameter
| 15'59.6"
|-
| Sun Equatorial Horizontal Parallax
| 08.8"
|-
| Moon Right Ascension
| 12h53m29.7s
|-
| Moon Declination
| -05°17'20.2"
|-
| Moon Semi-Diameter
| 14'49.9"
|-
| Moon Equatorial Horizontal Parallax
| 0°54'25.9"
|-
| ΔT
| 67.7 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]].

{| class="wikitable"
|+ Eclipse season of March–April 2015
! March 20 Descending node (new moon) !! [[April 2015 lunar eclipse|April 4]] Ascending node (full moon) 
|-
| [[File:SE2015Mar20T.png|200px]] || [[File:Lunar eclipse chart close-2015Apr04.png|200px]]
|- align=center
| [[Total eclipse#Types|Total solar eclipse]] Solar Saros 120 || [[Lunar eclipse#Types of lunar eclipse|Total lunar eclipse]] Lunar Saros 132
|}

== Related eclipses ==
=== Eclipses in 2015 ===
* [[Solar eclipse of March 20, 2015|A total solar eclipse on March 20]].
* '''A total lunar eclipse on April 4.'''
* [[Solar eclipse of September 13, 2015|A partial solar eclipse on September 13]].
* [[September 2015 lunar eclipse|A total lunar eclipse on September 28]].

=== Metonic ===
* Preceded by: [[June 2011 lunar eclipse|Lunar eclipse of June 15, 2011]]
* Followed by: [[January 2019 lunar eclipse|Lunar eclipse of January 21, 2019]]

=== Tzolkinex ===
* Preceded by: [[February 2008 lunar eclipse|Lunar eclipse of February 21, 2008]]
* Followed by: [[May 2022 lunar eclipse|Lunar eclipse of May 16, 2022]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of March 29, 2006]]
* Followed by: [[Solar eclipse of April 8, 2024]]

=== Tritos ===
* Preceded by: [[May 2004 lunar eclipse|Lunar eclipse of May 4, 2004]]
* Followed by: [[March 2026 lunar eclipse|Lunar eclipse of March 3, 2026]]

=== Lunar Saros 132 ===
* Preceded by: [[March 1997 lunar eclipse|Lunar eclipse of March 24, 1997]]
* Followed by: [[April 2033 lunar eclipse|Lunar eclipse of April 14, 2033]]

=== Inex ===
* Preceded by: [[April 1986 lunar eclipse|Lunar eclipse of April 24, 1986]]
* Followed by: [[March 2044 lunar eclipse|Lunar eclipse of March 13, 2044]]

=== Triad ===
* Preceded by: [[June 1928 lunar eclipse|Lunar eclipse of June 3, 1928]]
* Followed by: [[February 2102 lunar eclipse|Lunar eclipse of February 3, 2102]]

=== Lunar eclipses of 2013–2016 ===
{{Lunar eclipse set 2013-2016}}

=== Saros 132 ===
{{Lunar Saros series 132}}

=== Tritos series ===
{{Lunar Tritos series May 2004}}

=== Inex series ===
{{Lunar Inex series April 2015}}

=== 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 total solar eclipses of [[solar saros 139]].

{| class=wikitable
![[Solar eclipse of March 29, 2006|March 29, 2006]]
![[Solar eclipse of April 8, 2024|April 8, 2024]]
|-
|[[File:SE2006Mar29T.png|240px]]
|[[File:SE2024Apr08T.png|240px]]
|}

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

== Notes==
{{reflist}}

== External links==
{{Commons category|Lunar eclipse of 2015 April 4}}
* {{LEplot2001 link|2015|Apr|04|T}}
* [http://www.hermit.org/Eclipse/2015-04-04 Hermit Eclipse: Total Lunar Eclipse: April 4, 2015]
* [https://web.archive.org/web/20150402192305/http://www.mattastro.com/total-lunar-eclipse-2015/ Mattastro.com Total Lunar Eclipse: April 4, 2015]
* [http://apod.nasa.gov/apod/ap150408.html Full Moon in Earth's Shadow] [[APOD]] 2015 April 8

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 2015-04}}
[[Category:21st-century lunar eclipses|2015-04]]
[[Category:2015 in science]]
[[Category:April 2015]]

April 2015 lunar eclipse - Revision history

imported>Weatherman4064: /* Related eclipses */