A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, May 25, 2013, with an umbral magnitude of −0.9322. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 only about 18 hours before perigee (on May 25, 2013, at 21:40 UTC), the Moon's apparent diameter was larger.
This eclipse was visually imperceptible due to the small entry into the penumbral shadow. It also marked the beginning of Saros series 150.
Visibility The eclipse was completely visible over much of North and South America, west Africa, and western Europe, seen rising over the central Pacific Ocean and western Canada and setting over central Europe and central Africa.
Hourly motion shown right to leftThe Moon's hourly motion across the Earth's shadow in the constellation of Scorpius. 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.
+May 25, 2013 Lunar Eclipse Parameters Parameter Value Penumbral Magnitude 0.01702 Umbral Magnitude −0.93215 Gamma 1.53512 Sun Right Ascension 04h08m32.9s Sun Declination +20°58'05.1" Sun Semi-Diameter 15'47.5" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 16h09m09.9s Moon Declination -19°24'45.3" Moon Semi-Diameter 16'38.2" Moon Equatorial Horizontal Parallax 1°01'03.5" 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 August 6, 2009
Tzolkinex Followed by: Lunar eclipse of July 5, 2020
Tritos Preceded by: Lunar eclipse of June 24, 2002
Lunar Saros 150 Followed by: Lunar eclipse of June 5, 2031
Inex Preceded by: Lunar eclipse of June 13, 1984
Triad Preceded by: Lunar eclipse of July 25, 1926
Lunar eclipses of 2009–2013
Saros 150
Tritos series
Inex series
Series members between 1801 and 2200 1810 Oct 12(Saros 143) 1839 Sep 23(Saros 144) 1868 Sep 02(Saros 145) 1897 Aug 12(Saros 146) 1926 Jul 25(Saros 147) 1984 Jun 13(Saros 149) 2013 May 25(Saros 150) 2187 Jan 24(Saros 156)
See also List of lunar eclipses and List of 21st-century lunar eclipses :File:Penumbral eclipse of May 25, 2013 from lunar south pole.gif Animation of Earth as seen from lunar south pole during the eclipse.
Notes and references
External links