Solar eclipse of April 9, 1986

Solar eclipse of April 9, 1986
Map
Type of eclipse
NaturePartial
Gamma−1.0822
Magnitude0.8236
Maximum eclipse
Coordinates61°12′S 161°24′E / 61.2°S 161.4°E / -61.2; 161.4
Times (UTC)
Greatest eclipse6:21:22
References
Saros119 (64 of 71)
Catalog # (SE5000)9478

A partial solar eclipse occurred at the Moon's ascending node of orbit on Wednesday, April 9, 1986,[1] with a magnitude of 0.8236. 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, Australia, Indonesia, and New Zealand.

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 9, 1986 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1986 April 09 at 04:10:36.4 UTC
Equatorial Conjunction 1986 April 09 at 05:14:50.1 UTC
Ecliptic Conjunction 1986 April 09 at 06:09:02.6 UTC
Greatest Eclipse 1986 April 09 at 06:21:22.4 UTC
Last Penumbral External Contact 1986 April 09 at 08:32:39.0 UTC
April 9, 1986 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.82362
Eclipse Obscuration 0.75723
Gamma −1.08215
Sun Right Ascension 01h10m32.0s
Sun Declination +07°29'00.7"
Sun Semi-Diameter 15'58.1"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 01h12m23.9s
Moon Declination +06°36'30.3"
Moon Semi-Diameter 14'59.5"
Moon Equatorial Horizontal Parallax 0°55'01.4"
ΔT 55.0 s

Eclipse season

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See also: Eclipse cycle

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 1986
April 9
Ascending node (new moon)
 April 24
Descending node (full moon)
Partial solar eclipse
Solar Saros 119		 Total lunar eclipse
Lunar Saros 131
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Eclipses in 1986

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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 1986–1989

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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 1986 to 1989
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
119 April 9, 1986

Partial 		−1.0822 124 October 3, 1986

Hybrid 		0.9931
129 March 29, 1987

Hybrid 		−0.3053 134 September 23, 1987

Annular 		0.2787
139 March 18, 1988

Total 		0.4188 144 September 11, 1988

Annular 		−0.4681
149 March 7, 1989

Partial 		1.0981 154 August 31, 1989

Partial 		−1.1928

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.[4]

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 June 21, 1982 and June 21, 2058
June 21 April 8–9 January 26 November 13–14 September 1–2
117 119 121 123 125

June 21, 1982
April 9, 1986
January 26, 1990
November 13, 1993
September 2, 1997
127 129 131 133 135

June 21, 2001
April 8, 2005
January 26, 2009
November 13, 2012
September 1, 2016
137 139 141 143 145

June 21, 2020
April 8, 2024
January 26, 2028
November 14, 2031
September 2, 2035
147 149 151 153 155

June 21, 2039
April 9, 2043
January 26, 2047
November 14, 2050
September 2, 2054
157

June 21, 2058

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.

Series members between 1866 and 2200

March 16, 1866
(Saros 108)
December 13, 1898
(Saros 111)

September 12, 1931
(Saros 114)
August 12, 1942
(Saros 115)
July 11, 1953
(Saros 116)
June 10, 1964
(Saros 117)

May 11, 1975
(Saros 118)
April 9, 1986
(Saros 119)
March 9, 1997
(Saros 120)
February 7, 2008
(Saros 121)
January 6, 2019
(Saros 122)

December 5, 2029
(Saros 123)
November 4, 2040
(Saros 124)
October 4, 2051
(Saros 125)
September 3, 2062
(Saros 126)
August 3, 2073
(Saros 127)

July 3, 2084
(Saros 128)
June 2, 2095
(Saros 129)
May 3, 2106
(Saros 130)
April 2, 2117
(Saros 131)
March 1, 2128
(Saros 132)

January 30, 2139
(Saros 133)
December 30, 2149
(Saros 134)
November 27, 2160
(Saros 135)
October 29, 2171
(Saros 136)
September 27, 2182
(Saros 137)

August 26, 2193
(Saros 138)

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 7, 1812
(Saros 113)
July 18, 1841
(Saros 114)
June 28, 1870
(Saros 115)

June 8, 1899
(Saros 116)
May 19, 1928
(Saros 117)
April 30, 1957
(Saros 118)

April 9, 1986
(Saros 119)
March 20, 2015
(Saros 120)
February 28, 2044
(Saros 121)

February 7, 2073
(Saros 122)
January 19, 2102
(Saros 123)
December 30, 2130
(Saros 124)

December 9, 2159
(Saros 125)
November 18, 2188
(Saros 126)

References

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  1. ^ "April 9, 1986 Partial Solar Eclipse". timeanddate. Retrieved 9 August 2024.
  2. ^ "Partial Solar Eclipse of 1986 Apr 09". EclipseWise.com. Retrieved 9 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 119". eclipse.gsfc.nasa.gov.
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