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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
P1
Contacts (UTC)
P1	18:03:41
U1	19:54:04
Greatest	20:07:29
U4	20:21:04
P4	22:11:23
	← November 2012 May 2013 →

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

The eclipse was completely visible over Africa, Europe, and Asia, seen rising over eastern South America and setting over Australia.^[3]


Visibility map

Images

Gallery

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

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.^[4]

April 25, 2013 Lunar Eclipse Parameters
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

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.

Eclipse season of April–May 2013
April 25 Ascending node (full moon)	May 10 Descending node (new moon)	May 25 Ascending node (full moon)

Partial lunar eclipse Lunar Saros 112	Annular solar eclipse Solar Saros 138	Penumbral lunar eclipse Lunar Saros 150

Related eclipses

Lunar eclipses of 2013–2016

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	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	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

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.

1901–2100
1905 Feb 19	1923 Mar 3	1941 Mar 13

1959 Mar 24	1977 Apr 04	1995 Apr 15

2013 Apr 25	2031 May 07	2049 May 17

2067 May 28	2085 Jun 08

Half-Saros cycle

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.