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Solar eclipse of April 17, 1996

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Solar eclipse of April 17, 1996
Map
Type of eclipse
NaturePartial
Gamma−1.058
Magnitude0.8799
Maximum eclipse
Coordinates71°18′S 104°00′W / 71.3°S 104°W / -71.3; -104
Times (UTC)
Greatest eclipse22:38:12
References
Saros148 (20 of 75)
Catalog # (SE5000)9499

A partial solar eclipse occurred at the Moon's descending node of orbit between Wednesday, April 17 and Thursday, April 18, 1996,[1] with a magnitude of 0.8799. 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.

A partial eclipse was visible for parts of Antarctica, New Zealand, and eastern Oceania.

Images

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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.[2]

April 17, 1996 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1996 April 17 at 20:32:24.8 UTC
Equatorial Conjunction 1996 April 17 at 22:06:05.6 UTC
Greatest Eclipse 1996 April 17 at 22:38:12.1 UTC
Ecliptic Conjunction 1996 April 17 at 22:49:47.9 UTC
Last Penumbral External Contact 1996 April 18 at 00:44:20.0 UTC
April 17, 1996 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.87994
Eclipse Obscuration 0.84058
Gamma −1.05796
Sun Right Ascension 01h44m43.7s
Sun Declination +10°49'43.1"
Sun Semi-Diameter 15'55.6"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 01h45m48.3s
Moon Declination +09°51'28.1"
Moon Semi-Diameter 15'35.4"
Moon Equatorial Horizontal Parallax 0°57'13.0"
ΔT 61.8 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 1996
April 4
Ascending node (full moon)
April 17
Descending node (new moon)
Total lunar eclipse
Lunar Saros 122
Partial solar eclipse
Solar Saros 148
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Eclipses in 1996

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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 148

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Inex

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Triad

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Solar eclipses of 1993–1996

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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.[3]

Solar eclipse series sets from 1993 to 1996
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
118 May 21, 1993

Partial
1.1372 123 November 13, 1993

Partial
−1.0411
128

Partial in Bismarck, ND, USA
May 10, 1994

Annular
0.4077 133

Totality in Bolivia
November 3, 1994

Total
−0.3522
138 April 29, 1995

Annular
−0.3382 143

Totality in Dundlod, India
October 24, 1995

Total
0.3518
148 April 17, 1996

Partial
−1.058 153 October 12, 1996

Partial
1.1227

Saros 148

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This eclipse is a part of Saros series 148, repeating every 18 years, 11 days, and containing 75 events. The series started with a partial solar eclipse on September 21, 1653. It contains annular eclipses on April 29, 2014 and May 9, 2032; a hybrid eclipse on May 20, 2050; and total eclipses from May 31, 2068 through August 3, 2771. The series ends at member 75 as a partial eclipse on December 12, 2987. 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 annularity will be produced by member 22 at 22 seconds (by default) on May 9, 2032, and the longest duration of totality will be produced by member 54 at 5 minutes, 23 seconds on April 26, 2609. All eclipses in this series occur at the Moon’s descending node of orbit.[4]

Series members 10–31 occur between 1801 and 2200:
10 11 12

December 30, 1815

January 9, 1834

January 21, 1852
13 14 15

January 31, 1870

February 11, 1888

February 23, 1906
16 17 18

March 5, 1924

March 16, 1942

March 27, 1960
19 20 21

April 7, 1978

April 17, 1996

April 29, 2014
22 23 24

May 9, 2032

May 20, 2050

May 31, 2068
25 26 27

June 11, 2086

June 22, 2104

July 4, 2122
28 29 30

July 14, 2140

July 25, 2158

August 4, 2176
31

August 16, 2194

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 descending node.

22 eclipse events between September 12, 1931 and July 1, 2011
September 11–12 June 30–July 1 April 17–19 February 4–5 November 22–23
114 116 118 120 122

September 12, 1931

June 30, 1935

April 19, 1939

February 4, 1943

November 23, 1946
124 126 128 130 132

September 12, 1950

June 30, 1954

April 19, 1958

February 5, 1962

November 23, 1965
134 136 138 140 142

September 11, 1969

June 30, 1973

April 18, 1977

February 4, 1981

November 22, 1984
144 146 148 150 152

September 11, 1988

June 30, 1992

April 17, 1996

February 5, 2000

November 23, 2003
154 156

September 11, 2007

July 1, 2011

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 December 7, 2170 (part of Saros 164) and November 7, 2181 (part of Saros 165) are also a part of this series but are not included in the table below.

Series members between 1801 and 2105

September 28, 1810
(Saros 131)

August 27, 1821
(Saros 132)

July 27, 1832
(Saros 133)

June 27, 1843
(Saros 134)

May 26, 1854
(Saros 135)

April 25, 1865
(Saros 136)

March 25, 1876
(Saros 137)

February 22, 1887
(Saros 138)

January 22, 1898
(Saros 139)

December 23, 1908
(Saros 140)

November 22, 1919
(Saros 141)

October 21, 1930
(Saros 142)

September 21, 1941
(Saros 143)

August 20, 1952
(Saros 144)

July 20, 1963
(Saros 145)

June 20, 1974
(Saros 146)

May 19, 1985
(Saros 147)

April 17, 1996
(Saros 148)

March 19, 2007
(Saros 149)

February 15, 2018
(Saros 150)

January 14, 2029
(Saros 151)

December 15, 2039
(Saros 152)

November 14, 2050
(Saros 153)

October 13, 2061
(Saros 154)

September 12, 2072
(Saros 155)

August 13, 2083
(Saros 156)

July 12, 2094
(Saros 157)

June 12, 2105
(Saros 158)

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

August 16, 1822
(Saros 142)

July 28, 1851
(Saros 143)

July 7, 1880
(Saros 144)

June 17, 1909
(Saros 145)

May 29, 1938
(Saros 146)

May 9, 1967
(Saros 147)

April 17, 1996
(Saros 148)

March 29, 2025
(Saros 149)

March 9, 2054
(Saros 150)

February 16, 2083
(Saros 151)

January 29, 2112
(Saros 152)

January 8, 2141
(Saros 153)

December 18, 2169
(Saros 154)

November 28, 2198
(Saros 155)

References

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  1. ^ "April 17–18, 1996 Partial Solar Eclipse". timeanddate. Retrieved 10 August 2024.
  2. ^ "Partial Solar Eclipse of 1996 Apr 17". EclipseWise.com. Retrieved 10 August 2024.
  3. ^ 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.
  4. ^ "NASA - Catalog of Solar Eclipses of Saros 148". eclipse.gsfc.nasa.gov.
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