A partial lunar eclipse occurred at the Moon's ascending node of orbit on Thursday, April 25, 2013, 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.
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.
Visibility map
Images
Gallery
Eclipse details Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
+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 25Ascending node (full moon) May 10Descending node (new moon) May 25Ascending node (full moon) Partial lunar eclipseLunar Saros 112 Annular solar eclipseSolar Saros 138 Penumbral lunar eclipseLunar Saros 150
Related eclipses Eclipses in 2013 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 Preceded by: Lunar eclipse of July 7, 2009 Followed by: Lunar eclipse of February 11, 2017
Tzolkinex Preceded by: Lunar eclipse of March 14, 2006 Followed by: Lunar eclipse of June 5, 2020
Half-Saros Preceded by: Solar eclipse of April 19, 2004 Followed by: Solar eclipse of April 30, 2022
Tritos Preceded by: Lunar eclipse of May 26, 2002 Followed by: Lunar eclipse of March 25, 2024
Lunar Saros 112 Preceded by: Lunar eclipse of April 15, 1995 Followed by: Lunar eclipse of May 7, 2031
Inex Preceded by: Lunar eclipse of May 15, 1984 Followed by: Lunar eclipse of April 5, 2042
Triad Preceded by: Lunar eclipse of June 25, 1926 Followed by: Lunar eclipse of February 24, 2100
Lunar eclipses of 2013–2016
Saros 112
Tritos series
Inex series
Half-Saros cycle A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros This lunar eclipse is related to two partial solar eclipses of Solar Saros 119. April 19, 2004April 30, 2022
See also List of lunar eclipses and List of 21st-century lunar eclipses
References
2013 Apr 25: Partial Lunar Eclipse
External links
Hermit eclipse: 2013-04-25 APOD 2013/5/25 Caterpillar Moon