May 2004 lunar eclipse
Template:Short description Template:Infobox lunar eclipse A total lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, May 4, 2004,[1] with an umbral magnitude of 1.3035. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 1.2 days before perigee (on May 6, 2004, at 0:30 UTC), the Moon's apparent diameter was larger.[2]
This lunar eclipse is the third of a tetrad, with four total lunar eclipses in series, the others being on May 16, 2003; November 9, 2004; and October 28, 2004.
Visibility
The eclipse was completely visible over much of Africa, eastern Europe, Antarctica, and Asia, central, and south Asia, seen rising over South America, western Europe, and west Africa and setting over east Asia and Australia.[3]
| File:Lunar eclipse from moon-2004May04.png | File:Lunar eclipse chart close-04may04.png Hourly motion shown right to left |
| File:Lunar eclipse chart-04may04.png The moon's hourly motion across the Earth's shadow in the constellation of Libra. | |
Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 2.26449 |
| Umbral Magnitude | 1.30536 |
| Gamma | −0.31320 |
| Sun Right Ascension | 02h48m55.8s |
| Sun Declination | +16°14'51.5" |
| Sun Semi-Diameter | 15'51.5" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 14h48m25.1s |
| Moon Declination | -16°32'22.6" |
| Moon Semi-Diameter | 16'32.0" |
| Moon Equatorial Horizontal Parallax | 1°00'40.8" |
| ΔT | 64.5 s |
Eclipse season
Script error: No such module "Labelled list hatnote". 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.
| April 19 Ascending node (new moon) |
May 4 Descending node (full moon) |
|---|---|
| File:SE2004Apr19P.png | File:Lunar eclipse chart close-04may04.png |
| Partial solar eclipse Solar Saros 119 |
Total lunar eclipse Lunar Saros 131 |
Related lunar eclipses
Eclipses in 2004
- A partial solar eclipse on April 19.
- A total lunar eclipse on May 4.
- A partial solar eclipse on October 14.
- A total lunar eclipse on October 28.
Metonic
- Preceded by: Lunar eclipse of July 16, 2000
- Followed by: Lunar eclipse of February 21, 2008
Tzolkinex
- Preceded by: Lunar eclipse of March 24, 1997
- Followed by: Lunar eclipse of June 15, 2011
Half-Saros
- Preceded by: Solar eclipse of April 29, 1995
- Followed by: Solar eclipse of May 10, 2013
Tritos
- Preceded by: Lunar eclipse of June 4, 1993
- Followed by: Lunar eclipse of April 4, 2015
Lunar Saros 131
- Preceded by: Lunar eclipse of April 24, 1986
- Followed by: Lunar eclipse of May 16, 2022
Inex
- Preceded by: Lunar eclipse of May 25, 1975
- Followed by: Lunar eclipse of April 14, 2033
Triad
- Preceded by: Lunar eclipse of July 4, 1917
- Followed by: Lunar eclipse of March 5, 2091
Lunar eclipses of 2002–2005
Template:Lunar eclipse set 2002-2005
Saros 131
This eclipse is a part of Saros series 131, repeating every 18 years, 11 days, and containing 72 events. The series started with a penumbral lunar eclipse on May 10, 1427. It contains partial eclipses from July 25, 1553 through March 22, 1932; total eclipses from April 2, 1950 through September 3, 2202; and a second set of partial eclipses from September 13, 2220 through April 9, 2563. The series ends at member 72 as a penumbral eclipse on July 7, 2707.
The longest duration of totality will be produced by member 38 at 100 minutes, 36 seconds on June 28, 2094. All eclipses in this series occur at the Moon’s descending node of orbit.[5]
| Greatest | First | |||
|---|---|---|---|---|
| File:Lunar eclipse chart close-2094Jun28.png The greatest eclipse of the series will occur on 2094 Jun 28, lasting 100 minutes, 36 seconds.[6] |
Penumbral | Partial | Total | Central |
| 1427 May 10 |
1553 Jul 25 |
1950 Apr 02 File:Lunar eclipse chart close-1950Apr02.png |
2022 May 16 File:Lunar eclipse chart close-2022may16.png | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 2148 Jul 31 |
2202 Sep 03 |
2563 Apr 09 |
2707 Jul 07 | |
Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
Metonic series
Template:Metonic lunar eclipse 1966-2023
Tritos series
Template:Lunar Tritos series May 2004
Inex series
Template:Lunar Inex series May 2004
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[7] This lunar eclipse is related to two annular solar eclipses of Solar Saros 138.
| April 29, 1995 | May 10, 2013 |
|---|---|
| File:SE1995Apr29A.png | File:SE2013May10A.png |
See also
- List of lunar eclipses and List of 21st-century lunar eclipses
- May 2003 lunar eclipse
- November 2003 lunar eclipse
- October 2004 lunar eclipse
Notes
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- ↑ Listing of Eclipses of series 131
- ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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External links
- NASA
- 2004 May 04 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
- [1] APOD 2004 May 6, A Lunar Eclipse Mosaic, from Greece
- [2] APOD 2004 May 8, Good Morning Sydney, Sydney Australia
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- Spaceweather.com: Lunar eclipse gallery
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