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May 2013 lunar eclipse

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May 2013 lunar eclipse
Penumbral eclipse
The Moon barely grazed the northern penumbral shadow of the Earth.
DateMay 25, 2013
Gamma1.5350
Magnitude−0.9322
Saros cycle150 (1 of 71)
Penumbral33 minutes, 34 seconds
Contacts (UTC)
P13:53:15
Greatest4:09:58
P44:26:49

A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, May 25, 2013,[1] 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.[2]

This eclipse was visually imperceptible due to the small entry into the penumbral shadow. It also marked the beginning of Saros series 150.

Visibility

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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.[3]


Hourly motion shown right to left

The Moon's hourly motion across the Earth's shadow in the constellation of Scorpius.

Visibility map

Images

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NASA chart of the eclipse
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Eclipse details

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

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

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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
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Eclipses in 2013

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Metonic

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Tzolkinex

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Tritos

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Lunar Saros 150

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Inex

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Triad

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Lunar eclipses of 2009–2013

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This eclipse is the one of five lunar eclipses in a short-lived series. The lunar year series repeats after 12 lunations or 354 days (Shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events.

Lunar eclipse series sets from 2009–2013
Ascending node   Descending node
Saros #
Photo
Date
Viewing
Type
chart
Gamma Saros #
Photo
Date
Viewing
Type
chart
Gamma
110 2009 Jul 07
penumbral
−1.4916 115
2009 Dec 31
partial
0.9766
120
2010 Jun 26
partial
−0.7091 125
2010 Dec 21
total
0.3214
130
2011 Jun 15
total
0.0897 135
2011 Dec 10
total
−0.3882
140
2012 Jun 04
partial
0.8248 145 2012 Nov 28
penumbral
−1.0869
150 2013 May 25
penumbral
1.5351
Last set 2009 Aug 06 Last set 2009 Feb 9
Next set 2013 Apr 25 Next set 2013 Oct 18

Saros 150

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This is the first lunar eclipse of Saros series 150.[5] The next occurrence will also be a penumbral eclipse on 5 June 2031. Solar Saros 157 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Partial eclipses in series 150 will occur between 20 August 2157 and past the year 3000. Total eclipses will occur between 29 April 2572 and 28 August 2770.

See also

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Notes and references

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  1. ^ "May 24–25, 2013 Penumbral Lunar Eclipse". timeanddate. Retrieved 15 November 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 15 November 2024.
  3. ^ "Penumbral Lunar Eclipse of 2013 May 25" (PDF). NASA. Retrieved 15 November 2024.
  4. ^ "Penumbral Lunar Eclipse of 2013 May 25". EclipseWise.com. Retrieved 15 November 2024.
  5. ^ "Saros Series of Lunar Eclipses".
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