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Solar eclipse of June 21, 1982

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Solar eclipse of June 21, 1982
Map
Type of eclipse
NaturePartial
Gamma−1.2102
Magnitude0.6168
Maximum eclipse
Coordinates65°54′S 13°12′E / 65.9°S 13.2°E / -65.9; 13.2
Times (UTC)
Greatest eclipse12:04:33
References
Saros117 (67 of 71)
Catalog # (SE5000)9470

A partial solar eclipse occurred at the Moon's ascending node of orbit on Monday, June 21, 1982,[1] with a magnitude of 0.6168. 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.

This was the second of four partial solar eclipses in 1982, with the others occurring on January 25, July 20, and December 15.

A partial eclipse was visible for parts of Southern Africa.

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]

June 21, 1982 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1982 June 21 at 10:28:43.0 UTC
Equatorial Conjunction 1982 June 21 at 11:52:25.6 UTC
Ecliptic Conjunction 1982 June 21 at 11:52:38.0 UTC
Greatest Eclipse 1982 June 21 at 12:04:32.7 UTC
Last Penumbral External Contact 1982 June 21 at 13:40:27.7 UTC
June 21, 1982 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.61683
Eclipse Obscuration 0.53357
Gamma −1.21017
Sun Right Ascension 05h59m04.6s
Sun Declination +23°26'26.0"
Sun Semi-Diameter 15'44.2"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 05h59m35.7s
Moon Declination +22°12'41.3"
Moon Semi-Diameter 16'43.2"
Moon Equatorial Horizontal Parallax 1°01'21.9"
ΔT 52.5 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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of June–July 1982
June 21
Ascending node (new moon)
July 6
Descending node (full moon)
July 20
Ascending node (new moon)
Partial solar eclipse
Solar Saros 117
Total lunar eclipse
Lunar Saros 129
Partial solar eclipse
Solar Saros 155
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Eclipses in 1982

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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 117

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Inex

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Triad

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Solar eclipses of 1982–1985

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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]

The partial solar eclipses on January 25, 1982 and July 20, 1982 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1982 to 1985
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
117 June 21, 1982

Partial
−1.2102 122 December 15, 1982

Partial
1.1293
127 June 11, 1983

Total
−0.4947 132 December 4, 1983

Annular
0.4015
137 May 30, 1984

Annular
0.2755 142

Partial in Gisborne,
New Zealand
November 22, 1984

Total
−0.3132
147 May 19, 1985

Partial
1.072 152 November 12, 1985

Total
−0.9795

Saros 117

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This eclipse is a part of Saros series 117, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on June 24, 792 AD. It contains annular eclipses from September 18, 936 AD through May 14, 1333; hybrid eclipses from May 25, 1351 through July 8, 1423; and total eclipses from July 18, 1441 through May 19, 1928. The series ends at member 71 as a partial eclipse on August 3, 2054. 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 was produced by member 16 at 9 minutes, 26 seconds on December 3, 1062, and the longest duration of totality was produced by member 62 at 4 minutes, 19 seconds on April 26, 1892. 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.

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

October 19, 1808
(Saros 111)

August 20, 1895
(Saros 114)

July 31, 1924
(Saros 115)

July 11, 1953
(Saros 116)

June 21, 1982
(Saros 117)

June 1, 2011
(Saros 118)

May 11, 2040
(Saros 119)

April 21, 2069
(Saros 120)

April 1, 2098
(Saros 121)

March 13, 2127
(Saros 122)

February 21, 2156
(Saros 123)

January 31, 2185
(Saros 124)

References

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  1. ^ "June 21, 1982 Partial Solar Eclipse". timeanddate. Retrieved 9 August 2024.
  2. ^ "Partial Solar Eclipse of 1982 Jun 21". 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 117". eclipse.gsfc.nasa.gov.
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