October 2004 lunar eclipse

{{Infobox lunar eclipse

| type = total

| image = Oct 28 2004 total lunar eclipse-espenak.png

| caption = Totality as viewed from Dunkirk, Maryland at 3:03 UTC, taken by Fred Espenak

| date = October 28, 2004

| gamma = 0.2846

| magnitude = 1.3100

| saros_ser = 136

| saros_no = 19 of 72

| totality = 85 minutes, 29 seconds

| partiality = 218 minutes, 41 seconds

| penumbral = 353 minutes, 46 seconds

| p1 = 0:07:17

| u1 = 1:14:45

| u2 = 2:23:51

| greatest = 3:04:07

| u3 = 3:44:20

| u4 = 4:53:26

| p4 = 6:01:03

| previous = May 2004

| next = April 2005

}}

A total lunar eclipse occurred at the Moon’s ascending node of orbit on Thursday, October 28, 2004,{{cite web|title=October 27–28, 2004 Total Lunar Eclipse (Blood Moon)|url=https://www.timeanddate.com/eclipse/lunar/2004-october-28|publisher=timeanddate|access-date=13 November 2024}} with an umbral magnitude of 1.3100. 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 5.4 days before apogee (on November 2, 2004, at 13:10 UTC), the Moon's apparent diameter was smaller.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=2004&n=136|publisher=timeanddate|access-date=13 November 2024}}

This lunar eclipse is the last of a tetrad, with four total lunar eclipses in series, the others being on May 16, 2003; November 9, 2004; and May 4, 2004.

Visibility

The eclipse was completely visible over much of North and South America, west Africa, and western Europe, seen rising over western North America and the Pacific Ocean and setting over Africa, eastern Europe, and west Asia.{{cite web|title=Total Lunar Eclipse of 2004 Oct 28|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2001/LE2004Oct28T.pdf|publisher=NASA|access-date=13 November 2024}}

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Hourly motion shown right to left

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

Gallery

Image:Lunar-eclipse-2004.jpg|Timelapse photo from Hayward, California

Image:US Navy 041027-N-9500T-001 The moon turns red and orange during a total lunar eclipse.jpg|Ault Field, Washington, 2:29 UT

Image:FrauBucher - redmoonTrio espenak full (by).jpg|Dunkirk, Maryland, 3:03 UT

Image:Lunar_eclipse_28102004.jpg|From Kiuruvesi, Finland, 3:21 UT

Image:Marshmallow - DSC 0176 (by).jpg|Seattle, Washington
End of totality, 3:43 UT

Image:Ckindel - Lunar Eclipse Oct 27, 2004 (by-sa).jpg|Bellevue, Washington, 3:51 UT

Image:J.C. Rojas - Lunar Eclipse (by-sa).jpg|Timelapse photo from A Coruña, Spain

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.{{cite web|title=Total Lunar Eclipse of 2004 Oct 28|url=https://eclipsewise.com/lunar/LEprime/2001-2100/LE2004Oct28Tprime.html|publisher=EclipseWise.com|access-date=13 November 2024}}

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|+October 28, 2004 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 2.36560

Umbral Magnitude

| 1.31001

Gamma

| 0.28465

Sun Right Ascension

| 14h11m00.6s

Sun Declination

| -13°12'05.3"

Sun Semi-Diameter

| 16'06.0"

Sun Equatorial Horizontal Parallax

| 08.9"

Moon Right Ascension

| 02h10m32.6s

Moon Declination

| +13°26'29.6"

Moon Semi-Diameter

| 15'15.1"

Moon Equatorial Horizontal Parallax

| 0°55'58.4"

ΔT

| 64.6 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.

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|+ Eclipse season of October 2004

! October 14
Descending node (new moon)
!! October 28
Ascending node (full moon)

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| Partial solar eclipse
Solar Saros 124

Total lunar eclipse
Lunar Saros 136

Related 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 January 9, 2001
Followed by: Lunar eclipse of August 16, 2008

= Tzolkinex =

Preceded by: Lunar eclipse of September 16, 1997
Followed by: Lunar eclipse of December 10, 2011

= Half-Saros =

Preceded by: Solar eclipse of October 24, 1995
Followed by: Solar eclipse of November 3, 2013

= Tritos =

Preceded by: Lunar eclipse of November 29, 1993
Followed by: Lunar eclipse of September 28, 2015

= Lunar Saros 136 =

Preceded by: Lunar eclipse of October 17, 1986
Followed by: Lunar eclipse of November 8, 2022

= Inex =

Preceded by: Lunar eclipse of November 18, 1975
Followed by: Lunar eclipse of October 8, 2033

= Triad =

Preceded by: Lunar eclipse of December 28, 1917
Followed by: Lunar eclipse of August 29, 2091

= Lunar eclipses of 2002–2005 =

= Metonic series =

= Saros 136 =

= 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 solar eclipses of Solar Saros 143.

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!October 24, 1995

!November 3, 2013

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