imported>Weatherman4064: /* Related eclipses */

2025-03-10T01:06:35Z

Related eclipses

New page

{{short description|Partial lunar eclipse in 1903}}
{{Infobox lunar eclipse
| type = partial
| image = Lunar eclipse chart close-1903Apr12.png
| caption = The Moon's hourly motion shown right to left
| date = April 12, 1903
| gamma = 0.4798
| magnitude = 0.9677
| saros_ser = 130
| saros_no = 28 of 72
| partiality = 196 minutes, 31 seconds
| penumbral = 330 minutes, 6 seconds
| p1 = 21:27:26
| u1 = 22:34:39
| greatest = 0:12:58
| u4 = 1:51:11
| p4 = 2:58:02
| previous = October 1902
| next = October 1903
}}
A partial [[lunar eclipse]] occurred at the Moon’s [[Lunar node|ascending node]] of orbit on Sunday, April 12, 1903,<ref>{{cite web|title=April 11–12, 1903 Partial Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1903-april-12|publisher=timeanddate|access-date=16 December 2024}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of 0.9677. A lunar eclipse occurs when the [[Moon]] moves into the [[Earth's shadow]], causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in 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. The Moon's apparent diameter was near the average diameter because it occurred 6.2 days after [[Apsis|perigee]] (on April 5, 1903, at 18:45 UTC) and 7.1 days before [[Apsis|apogee]] (on April 19, 1903, at 4:35 UTC).<ref>{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1903&n=136|publisher=timeanddate|access-date=16 December 2024}}</ref>

This nearly total lunar eclipse of [[Lunar Saros 130]] preceded the first total eclipse of the series on [[April 1921 lunar eclipse|April 22, 1921]].

It occurred on [[Easter Sunday]] ([[Gregorian calendar|Gregorian]] only), for the first time since 1846.<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}}

== Visibility ==
The eclipse was completely visible over eastern [[South America]], [[Africa]], [[Europe]], and [[Antarctica]], seen rising over western South America and much of [[North America]] and setting over much of [[Asia]] and western [[Australia]].<ref>{{cite web|title=Partial Lunar Eclipse of 1903 Apr 12|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1901/LE1903Apr12P.pdf|publisher=NASA|access-date=16 December 2024}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1903Apr12.png|300px]] [[File:Lunar eclipse chart close-1903Apr12.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=Partial Lunar Eclipse of 1903 Apr 12|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1903Apr12Pprime.html|publisher=EclipseWise.com|access-date=16 December 2024}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+April 12, 1903 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 1.98771
|-
| Umbral Magnitude
| 0.96765
|-
| Gamma
| 0.47981
|-
| Sun Right Ascension
| 01h17m19.0s
|-
| Sun Declination
| +08°10'13.1"
|-
| Sun Semi-Diameter
| 15'57.3"
|-
| Sun Equatorial Horizontal Parallax
| 08.8"
|-
| Moon Right Ascension
| 13h17m50.3s
|-
| Moon Declination
| -07°43'47.7"
|-
| Moon Semi-Diameter
| 15'38.4"
|-
| Moon Equatorial Horizontal Parallax
| 0°57'24.1"
|-
| ΔT
| 1.6 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 March–April 1903
! [[Solar eclipse of March 29, 1903|March 29]] Descending node (new moon) !! April 12 Ascending node (full moon)
|-
| [[File:SE1903Mar29A.png|200px]] || [[File:Lunar eclipse chart close-1903Apr12.png|200px]]
|- align=center
| [[Total eclipse#Types|Annular solar eclipse]] Solar Saros 118 ||
[[Lunar eclipse#Types of lunar eclipse|Partial lunar eclipse]] Lunar Saros 130
|}

== Related eclipses ==
=== Eclipses in 1903 ===
* [[Solar eclipse of March 29, 1903|An annular solar eclipse on March 29]].
* '''A partial lunar eclipse on April 12.'''
* [[Solar eclipse of September 21, 1903|A total solar eclipse on September 21]].
* [[October 1903 lunar eclipse|A partial lunar eclipse on October 6]].

=== Metonic ===
* Preceded by: [[June 1899 lunar eclipse|Lunar eclipse of June 23, 1899]]
* Followed by: [[January 1907 lunar eclipse|Lunar eclipse of January 29, 1907]]

=== Tzolkinex ===
* Preceded by: [[February 1896 lunar eclipse|Lunar eclipse of February 28, 1896]]
* Followed by: [[May 1910 lunar eclipse|Lunar eclipse of May 24, 1910]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of April 6, 1894]]
* Followed by: [[Solar eclipse of April 17, 1912]]

=== Tritos ===
* Preceded by: [[May 1892 lunar eclipse|Lunar eclipse of May 11, 1892]]
* Followed by: [[March 1914 lunar eclipse|Lunar eclipse of March 12, 1914]]

=== Lunar Saros 130 ===
* Preceded by: [[March 1885 lunar eclipse|Lunar eclipse of March 30, 1885]]
* Followed by: [[April 1921 lunar eclipse|Lunar eclipse of April 22, 1921]]

=== Inex ===
* Preceded by: [[May 1874 lunar eclipse|Lunar eclipse of May 1, 1874]]
* Followed by: [[March 1932 lunar eclipse|Lunar eclipse of March 22, 1932]]

=== Triad ===
* Preceded by: [[June 1816 lunar eclipse|Lunar eclipse of June 10, 1816]]
* Followed by: [[February 1990 lunar eclipse|Lunar eclipse of February 9, 1990]]

=== Lunar eclipses of 1901–1904 ===
This eclipse is a member of a [[Eclipse cycle#Eclipse cycles|semester series]]. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating [[Lunar node|nodes]] of the Moon's orbit.<ref>{{cite web |last1=van Gent |first1=R.H |title=Solar- and Lunar-Eclipse Predictions from Antiquity to the Present |url=http://www.staff.science.uu.nl/~gent0113/eclipse/eclipsecycles.htm#Sar%20%28Half%20Saros%29 |website=A Catalogue of Eclipse Cycles |publisher=Utrecht University |access-date=6 October 2018}}</ref>

The penumbral lunar eclipse on [[March 1904 lunar eclipse|March 2, 1904]] occurs in the next lunar year eclipse set.

{| class="wikitable mw-collapsible mw-collapsed"
!class="nowrap" colspan="9" | [[Lunar eclipse]] series sets from 1901 to 1904
|-
! scope="col" colspan="4" | Ascending node
| rowspan="11" | 
! scope="col" colspan="4" | Descending node
|- style="text-align: center;"
! scope="col" | [[Saros (astronomy)|Saros]]
! scope="col" | Date Viewing
! scope="col" | Type Chart
! scope="col" | [[Gamma (eclipse)|Gamma]]
! scope="col" | Saros
! scope="col" | Date Viewing
! scope="col" | Type Chart
! scope="col" | Gamma
|- style="text-align: center;"
| 110
| [[May 1901 lunar eclipse|1901 May 03]] [[File:Lunar eclipse from moon-1901May03.png|80px]]
| style="text-align:center;" |Penumbral [[File:Lunar eclipse chart close-1901May03.png|80px]]
| −1.0101
| 115
| [[October 1901 lunar eclipse|1901 Oct 27]] [[File:Lunar eclipse from moon-1901Oct27.png|80px]]
| style="text-align:center;" |Partial [[File:Lunar eclipse chart close-1901Oct27.png|80px]]
| 0.9021
|- style="text-align: center;"
| 120
| [[April 1902 lunar eclipse|1902 Apr 22]] [[File:Lunar eclipse from moon-1902Apr22.png|80px]]
| style="text-align:center;" |'''Total''' [[File:Lunar eclipse chart close-1902Apr22.png|80px]]
| −0.2680
| 125
| [[October 1902 lunar eclipse|1902 Oct 17]] [[File:Lunar eclipse from moon-1902Oct17.png|80px]]
| style="text-align:center;" |'''Total''' [[File:Lunar eclipse chart close-1902Oct17.png|80px]]
| 0.2201
|- style="text-align: center;"
| 130
| [[April 1903 lunar eclipse|1903 Apr 12]] [[File:Lunar eclipse from moon-1903Apr12.png|80px]]
| style="text-align:center;" |Partial [[File:Lunar eclipse chart close-1903Apr12.png|80px]]
| 0.4798
| 135
| [[October 1903 lunar eclipse|1903 Oct 06]] [[File:Lunar eclipse from moon-1903Oct06.png|80px]]
| style="text-align:center;" |Partial [[File:Lunar eclipse chart close-1903Oct06.png|80px]]
| −0.5280
|- style="text-align: center;"
| 140
| [[March 1904 lunar eclipse|1904 Mar 31]] [[File:Lunar eclipse from moon-1904Mar31.png|80px]]
| style="text-align:center;" |Penumbral [[File:Lunar eclipse chart close-1904Mar31.png|80px]]
| 1.1665
| 145
| [[September 1904 lunar eclipse|1904 Sep 24]] [[File:Lunar eclipse from moon-1904Sep24.png|80px]]
| style="text-align:center;" |Penumbral [[File:Lunar eclipse chart close-1904Sep24.png|80px]]
| −1.2837
|}

=== Saros 130 ===
{{Lunar Saros series 130}}

=== Tritos series ===
{{Lunar Tritos series July 2001}}

=== Inex series ===
{{Lunar Inex series January 2019}}

=== 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 hybrid solar eclipses of [[Solar Saros 137]].
{| class=wikitable
![[Solar eclipse of April 6, 1894|April 6, 1894]]
![[Solar eclipse of April 17, 1912|April 17, 1912]]
|-
|[[File:SE1894Apr06H.png|240px]]
|[[File:SE1912Apr17H.png|240px]]
|}

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

==Notes==
{{reflist}}

==External links==
*{{LEplot1901 link|1903|Apr|12|P}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1903-04}}
[[Category:20th-century lunar eclipses|1903-04]]
[[Category:1903 in science]]

April 1903 lunar eclipse - Revision history

imported>Weatherman4064: /* Related eclipses */