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April 2005 lunar eclipse

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April 2005 lunar eclipse
Penumbral eclipse
From Minneapolis, Minnesota, with inset images of a full moon a few hours before the eclipse, and the setting moon at 9:55 UT near greatest eclipse.
DateApril 24, 2005
Gamma−1.0885
Magnitude−0.1417
Saros cycle141 (23 of 73)
Penumbral245 minutes, 38 seconds
Contacts (UTC)
P17:52:06
Greatest9:54:51
P411:57:44

A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, April 24, 2005,[1] with an umbral magnitude of −0.1417. 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 about 4.9 days before perigee (on April 29, 2005, at 6:10 UTC), the Moon's apparent diameter was larger.[2]

Visibility

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The eclipse was completely visible much of western North America, the Pacific Ocean, and eastern Australia, seen rising over Australia and east Asia and setting over eastern North America and South America.[3]


Hourly motion shown right to left

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

Visibility map

Images

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NASA chart of the eclipse

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]

April 24, 2005 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 0.86693
Umbral Magnitude −0.14165
Gamma −1.08851
Sun Right Ascension 02h08m13.9s
Sun Declination +12°57'36.8"
Sun Semi-Diameter 15'54.1"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 14h06m23.1s
Moon Declination -13°54'32.8"
Moon Semi-Diameter 15'46.0"
Moon Equatorial Horizontal Parallax 0°57'51.7"
ΔT 64.7 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.

Eclipse season of April 2005
April 8
Ascending node (new moon)
April 24
Descending node (full moon)
Hybrid solar eclipse
Solar Saros 129
Penumbral lunar eclipse
Lunar Saros 141
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Eclipses in 2005

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Lunar Saros 141

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Inex

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Triad

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Lunar eclipses of 2002–2005

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Lunar eclipse series sets from 2002–2005
Descending node   Ascending node
Saros
Photo
Date
View
Type
Chart
Gamma Saros
Photo
Date
View
Type
Chart
Gamma
111 2002 May 26
penumbral
1.1759 116 2002 Nov 20
penumbral
−1.1127
121
2003 May 16
total
0.4123 126
2003 Nov 09
total
−0.4319
131
2004 May 04
total
−0.3132 136
2004 Oct 28
total
0.2846
141 2005 Apr 24
penumbral
−1.0885 146
2005 Oct 17
partial
0.9796
Last set 2002 Jun 24 Last set 2001 Dec 30
Next set 2006 Mar 14 Next set 2006 Sep 07


Saros 141

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Lunar Saros 141, repeating every 18 years and 11 days, has a total of 72 lunar eclipse events including 26 total lunar eclipses.

First Penumbral Lunar Eclipse: 1608 Aug 25

First Partial Lunar Eclipse: 2041 May 16

First Total Lunar Eclipse: 2167 Aug 01

First Central Lunar Eclipse: 2221 Sep 02

Greatest Eclipse of the Lunar Saros 141: 2293 Oct 16

Last Central Lunar Eclipse: 2546 Mar 18

Last Total Lunar Eclipse: 2618 May 01

Last Partial Lunar Eclipse: 2744 Jul 16

Last Penumbral Lunar Eclipse: 2888 Oct 11

1901-2100

March 1915 lunar eclipse

March 1933 lunar eclipse

March 1951 lunar eclipse

April 1969 lunar eclipse

April 1987 lunar eclipse

April 2005 lunar eclipse

May 2023 lunar eclipse

May 2041 lunar eclipse

May 2059 lunar eclipse

June 2077 lunar eclipse

June 2095 lunar eclipse

Metonic series

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This eclipse is the last of four Metonic cycle lunar eclipses on the same date, 23–24 April, each separated by 19 years:

The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will in nearly the same location relative to the background stars.

Metonic lunar eclipse sets 1948–2005
Descending node   Ascending node
Saros Date Type Saros Date Type
111 1948 Apr 23 Partial 116 1948 Oct 18 Penumbral
121 1967 Apr 24 Total 126 1967 Oct 18 Total
131 1986 Apr 24 Total 136 1986 Oct 17 Total
141 2005 Apr 24 Penumbral 146 2005 Oct 17 Partial

Half-Saros cycle

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A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two solar eclipses of Solar Saros 148.

April 17, 1996 April 29, 2014

See also

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References

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  1. ^ "April 23–24, 2005 Penumbral Lunar Eclipse". timeanddate. Retrieved 13 November 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 13 November 2024.
  3. ^ "Penumbral Lunar Eclipse of 2005 Apr 24" (PDF). NASA. Retrieved 13 November 2024.
  4. ^ "Penumbral Lunar Eclipse of 2005 Apr 24". EclipseWise.com. Retrieved 13 November 2024.
  5. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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