April 2013 lunar eclipse
| Partial eclipse | |||||||||||||
 Partiality as viewed from Rabka-Zdrój, Poland, 20:10 UTC | |||||||||||||
| Date | April 25, 2013 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.0121 | ||||||||||||
| Magnitude | 0.0160 | ||||||||||||
| Saros cycle | 112 (65 of 72) | ||||||||||||
| Partiality | 27 minutes, 0 seconds | ||||||||||||
| Penumbral | 247 minutes, 42 seconds | ||||||||||||
| |||||||||||||
A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Thursday, April 25, 2013,[1] with an umbral magnitude of 0.0160. 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. Occurring about 1.8 days before perigee (on April 27, 2013, at 15:50 UTC), the Moon's apparent diameter was larger.[2]
Only a tiny sliver (1.48%) of the Moon was covered by the Earth's umbral shadow at maximum eclipse, but the entire northern half of the Moon was darkened from being inside the penumbral shadow. This was one of the shortest partial eclipses of the Moon in the 21st century, lasting 27 minutes. This was also the last of 58 umbral lunar eclipses in Lunar Saros 112.
Visibility
[edit]The eclipse was completely visible over Africa, Europe, and Asia, seen rising over eastern South America and setting over Australia.[3]
 
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 Visibility map |
Images
[edit]
Gallery
[edit]-
From Melbourne, Australia, 18:42 UTC -
From Las Palmas, Canary Islands, 20:05 UTC -
From Essex, England, 20:06 UTC -
From Arinaga, Canary Islands, 20:07 UTC -
From Foncquevillers, France, 20:08 UTC -
From Belfort, France, combined images -
From Thatcham, UK, 20:10 UTC -
From Zürich, Switzerland, 20:12 UTC -
From Düsseldorf, Germany, 20:13 UTC -
From Paris, France, 20:18 UTC -
From Brescia, Italy, 20:19 UTC -
Time lapsed image from Ladispoli, Italy
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Eclipse details
[edit]Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.98783 |
| Umbral Magnitude | 0.01596 |
| Gamma | −1.01214 |
| Sun Right Ascension | 02h13m51.3s |
| Sun Declination | +13°26'35.0" |
| Sun Semi-Diameter | 15'53.7" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 14h12m51.4s |
| Moon Declination | -14°25'34.1" |
| Moon Semi-Diameter | 16'21.4" |
| Moon Equatorial Horizontal Parallax | 1°00'01.6" |
| ΔT | 67.1 s |
Eclipse season
[edit]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 synodic month.
| April 25 Ascending node (full moon) |
May 10 Descending node (new moon) |
May 25 Ascending node (full moon) |
|---|---|---|
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 |
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| Partial lunar eclipse Lunar Saros 112 |
Annular solar eclipse Solar Saros 138 |
Penumbral lunar eclipse Lunar Saros 150 |
Related eclipses
[edit]Eclipses in 2013
[edit]- A partial lunar eclipse on April 25.
- An annular solar eclipse on May 10.
- A penumbral lunar eclipse on May 25.
- A penumbral lunar eclipse on October 18.
- A hybrid solar eclipse on November 3.
Metonic
[edit]- Preceded by: Lunar eclipse of July 7, 2009
- Followed by: Lunar eclipse of February 11, 2017
Tzolkinex
[edit]- Preceded by: Lunar eclipse of March 14, 2006
- Followed by: Lunar eclipse of June 5, 2020
Half-Saros
[edit]- Preceded by: Solar eclipse of April 19, 2004
- Followed by: Solar eclipse of April 30, 2022
Tritos
[edit]- Preceded by: Lunar eclipse of May 26, 2002
- Followed by: Lunar eclipse of March 25, 2024
Lunar Saros 112
[edit]- Preceded by: Lunar eclipse of April 15, 1995
- Followed by: Lunar eclipse of May 7, 2031
Inex
[edit]- Preceded by: Lunar eclipse of May 15, 1984
- Followed by: Lunar eclipse of April 5, 2042
Triad
[edit]- Preceded by: Lunar eclipse of June 25, 1926
- Followed by: Lunar eclipse of February 24, 2100
Lunar eclipses of 2013–2016
[edit]The lunar year series repeats after 12 lunations or 354 days, shifting back by about 10 days in consecutive years. Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events.
| Lunar eclipse series sets from 2013–2016 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Viewing date |
Type | Gamma | Saros | Viewing date |
Type | Gamma | |
| 112
|
2013 Apr 25
|
Partial
|
−1.0121 | 117_(cropped).jpg)
|
2013 Oct 18
|
Penumbral
|
1.1508 | |
122
|
2014 Apr 15
|
Total
|
−0.3017 | 127
|
2014 Oct 08
|
Total
|
0.3827 | |
132
|
2015 Apr 04
|
Total
|
0.4460 | 137
|
2015 Sep 28
|
Total
|
−0.3296 | |
| 142 | 2016 Mar 23
|
Penumbral
|
1.1592 | 147.jpg)
|
2016 Sep 16
|
Penumbral
|
−1.0549 | |
| Last set | 2013 May 25 | Last set | 2012 Nov 28 | |||||
| Next set | 2017 Feb 11 | Next set | 2016 Aug 18 | |||||
Saros 112
[edit]Lunar Saros series 112, repeating every 18 years and 11 days, has a total of 72 lunar eclipse events including 15 total lunar eclipses.
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series occurred on 1490 Jun 02, lasting 100 minutes.[5] | Penumbral | Partial | Total | Central |
| 859 May 20 | 985 Aug 03 | 1364 Mar 18 | 1436 Apr 30 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 1562 Jul 16 | 1616 Aug 27 | 2013 Apr 25
|
2139 Jul 12 | |
There are 11 series events between 1901 and 2100, grouped into threes (called an exeligmos), each column with approximately the same viewing longitude on Earth.
| 1905 Feb 19 | 1923 Mar 3 | 1941 Mar 13 | |||
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| 1959 Mar 24 | 1977 Apr 04 | 1995 Apr 15 | |||
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| 2013 Apr 25 | 2031 May 07 | 2049 May 17 | |||
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| 2067 May 28 | 2085 Jun 08 | ||||
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Half-Saros cycle
[edit]A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[6] This lunar eclipse is related to two partial solar eclipses of Solar Saros 119.
| April 19, 2004 | April 30, 2022 |
|---|---|
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See also
[edit]References
[edit]- ^ "April 25–26, 2013 Partial Lunar Eclipse". timeanddate. Retrieved 15 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 15 November 2024.
- ^ "Partial Lunar Eclipse of 2013 Apr 25" (PDF). NASA. Retrieved 15 November 2024.
- ^ "Partial Lunar Eclipse of 2013 Apr 25". EclipseWise.com. Retrieved 15 November 2024.
- ^ Listing of Eclipses of series 112
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit]- 2013 Apr 25 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
- Hermit eclipse: 2013-04-25
- APOD 2013/5/25 Caterpillar Moon
_(cropped).jpg)
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