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Solar eclipse of April 19, 2004

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Solar eclipse of April 19, 2004
Map
Type of eclipse
NaturePartial
Gamma−1.1335
Magnitude0.7367
Maximum eclipse
Coordinates61°36′S 44°18′E / 61.6°S 44.3°E / -61.6; 44.3
Times (UTC)
Greatest eclipse13:35:05
References
Saros119 (65 of 71)
Catalog # (SE5000)9517

A partial solar eclipse occurred at the Moon's ascending node of orbit on Monday, April 19, 2004,[1][2][3] with a magnitude of 0.7367. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.

The eclipse was largely visible over the south Atlantic Ocean and north shores of Antarctica, most prominently the Antarctic Peninsula. The eclipse could also be seen in southern Africa at sunset. Considering the magnitude and the solar altitude, South Africa was the best place to observe this eclipse. In Cape Town, the Sun was about 40% obscured, while in Pretoria the Sun was 29% obscured. Further north, the eclipse remained visible up to Angola, the southern Democratic Republic of the Congo and Tanzania.

Images

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Animated eclipse path

Eclipse details

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Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.[4]

April 19, 2004 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 2004 April 19 at 11:30:59.6 UTC
Equatorial Conjunction 2004 April 19 at 12:30:29.4 UTC
Ecliptic Conjunction 2004 April 19 at 13:22:15.9 UTC
Greatest Eclipse 2004 April 19 at 13:35:05.3 UTC
Last Penumbral External Contact 2004 April 19 at 15:39:41.1 UTC
April 19, 2004 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.73674
Eclipse Obscuration 0.65501
Gamma −1.13345
Sun Right Ascension 01h50m58.6s
Sun Declination +11°24'41.2"
Sun Semi-Diameter 15'55.2"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 01h52m50.5s
Moon Declination +10°28'42.9"
Moon Semi-Diameter 15'01.7"
Moon Equatorial Horizontal Parallax 0°55'09.3"
ΔT 64.6 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–May 2004
April 19
Ascending node (new moon)
May 4
Descending node (full moon)
Partial solar eclipse
Solar Saros 119
Total lunar eclipse
Lunar Saros 131
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Eclipses in 2004

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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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Solar Saros 119

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Inex

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Triad

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Solar eclipses of 2004–2007

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This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]

Solar eclipse series sets from 2004 to 2007
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
119 April 19, 2004

Partial
−1.13345 124 October 14, 2004

Partial
1.03481
129

Partial in Naiguatá, Venezuela
April 8, 2005

Hybrid
−0.34733 134

Annularity in Madrid, Spain
October 3, 2005

Annular
0.33058
139

Totality in Side, Turkey
March 29, 2006

Total
0.38433 144

Partial in São Paulo, Brazil
September 22, 2006

Annular
−0.40624
149

Partial in Jaipur, India
March 19, 2007

Partial
1.07277 154

Partial in Córdoba, Argentina
September 11, 2007

Partial
−1.12552

Saros 119

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This eclipse is a part of Saros series 119, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on May 15, 850 AD. It contains total eclipses on August 9, 994 AD and August 20, 1012; a hybrid eclipse on August 31, 1030; and annular eclipses from September 10, 1048 through March 18, 1950. The series ends at member 71 as a partial eclipse on June 24, 2112. Its 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.

The longest duration of totality was produced by member 10 at 32 seconds on August 20, 1012, and the longest duration of annularity was produced by member 44 at 7 minutes, 37 seconds on September 1, 1625. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]

Metonic series

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The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's ascending node.

21 eclipse events between July 1, 2000 and July 1, 2076
July 1–2 April 19–20 February 5–7 November 24–25 September 12–13
117 119 121 123 125

July 1, 2000

April 19, 2004

February 7, 2008

November 25, 2011

September 13, 2015
127 129 131 133 135

July 2, 2019

April 20, 2023

February 6, 2027

November 25, 2030

September 12, 2034
137 139 141 143 145

July 2, 2038

April 20, 2042

February 5, 2046

November 25, 2049

September 12, 2053
147 149 151 153 155

July 1, 2057

April 20, 2061

February 5, 2065

November 24, 2068

September 12, 2072
157

July 1, 2076

Tritos series

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This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

The partial solar eclipses on March 27, 1884 (part of Saros 108) and December 24, 1916 (part of Saros 111) are also a part of this series but are not included in the table below.

Series members between 1971 and 2200

July 22, 1971
(Saros 116)

June 21, 1982
(Saros 117)

May 21, 1993
(Saros 118)

April 19, 2004
(Saros 119)

March 20, 2015
(Saros 120)

February 17, 2026
(Saros 121)

January 16, 2037
(Saros 122)

December 16, 2047
(Saros 123)

November 16, 2058
(Saros 124)

October 15, 2069
(Saros 125)

September 13, 2080
(Saros 126)

August 15, 2091
(Saros 127)

July 15, 2102
(Saros 128)

June 13, 2113
(Saros 129)

May 14, 2124
(Saros 130)

April 13, 2135
(Saros 131)

March 12, 2146
(Saros 132)

February 9, 2157
(Saros 133)

January 10, 2168
(Saros 134)

December 9, 2178
(Saros 135)

November 8, 2189
(Saros 136)

October 9, 2200
(Saros 137)

Inex series

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This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.

Series members between 1801 and 2200

September 8, 1801
(Saros 112)

August 18, 1830
(Saros 113)

July 29, 1859
(Saros 114)

July 9, 1888
(Saros 115)

June 19, 1917
(Saros 116)

May 30, 1946
(Saros 117)

May 11, 1975
(Saros 118)

April 19, 2004
(Saros 119)

March 30, 2033
(Saros 120)

March 11, 2062
(Saros 121)

February 18, 2091
(Saros 122)

January 30, 2120
(Saros 123)

January 9, 2149
(Saros 124)

December 20, 2177
(Saros 125)

References

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  1. ^ "April 19, 2004 Partial Solar Eclipse". timeanddate. Retrieved 11 August 2024.
  2. ^ "Sky". The Desert Sun. 2004-04-19. p. 32. Retrieved 2023-10-25 – via Newspapers.com.
  3. ^ "The stars". Poughkeepsie Journal. 2004-04-19. p. 2B. Retrieved 2023-10-25 – via Newspapers.com.
  4. ^ "Partial Solar Eclipse of 2004 Apr 19". EclipseWise.com. Retrieved 11 August 2024.
  5. ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
  6. ^ "NASA - Catalog of Solar Eclipses of Saros 119". eclipse.gsfc.nasa.gov.
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