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Solar eclipse of January 25, 1982

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Solar eclipse of January 25, 1982
Map
Type of eclipse
NaturePartial
Gamma−1.2311
Magnitude0.5663
Maximum eclipse
Coordinates69°18′S 91°42′W / 69.3°S 91.7°W / -69.3; -91.7
Times (UTC)
Greatest eclipse4:42:53
References
Saros150 (15 of 71)
Catalog # (SE5000)9468

A partial solar eclipse occurred at the Moon's descending node of orbit on Monday, January 25, 1982,[1] with a magnitude of 0.5663. 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 first of four partial solar eclipses in 1982, with the others occurring on June 21, July 20, and December 15.

A partial eclipse was visible for parts of Antarctica 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]

January 25, 1982 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1982 January 25 at 02:50:39.8 UTC
Equatorial Conjunction 1982 January 25 at 04:21:56.3 UTC
Greatest Eclipse 1982 January 25 at 04:42:53.2 UTC
Ecliptic Conjunction 1982 January 25 at 04:56:48.6 UTC
Last Penumbral External Contact 1982 January 25 at 06:35:11.3 UTC
January 25, 1982 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.56631
Eclipse Obscuration 0.45424
Gamma −1.23110
Sun Right Ascension 20h28m55.5s
Sun Declination -19°02'44.2"
Sun Semi-Diameter 16'14.7"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 20h29m37.5s
Moon Declination -20°09'51.6"
Moon Semi-Diameter 15'03.4"
Moon Equatorial Horizontal Parallax 0°55'15.6"
ΔT 52.2 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 January 1982
January 9
Ascending node (full moon)
January 25
Descending node (new moon)
Total lunar eclipse
Lunar Saros 124
Partial solar eclipse
Solar Saros 150
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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 150

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Inex

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Triad

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Solar eclipses of 1979–1982

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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 June 21, 1982 and December 15, 1982 occur in the next lunar year eclipse set.

Solar eclipse series sets from 1979 to 1982
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
120

Totality in Brandon, MB,
Canada
February 26, 1979

Total
0.8981 125 August 22, 1979

Annular
−0.9632
130 February 16, 1980

Total
0.2224 135 August 10, 1980

Annular
−0.1915
140 February 4, 1981

Annular
−0.4838 145 July 31, 1981

Total
0.5792
150 January 25, 1982

Partial
−1.2311 155 July 20, 1982

Partial
1.2886

Saros 150

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This eclipse is a part of Saros series 150, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on August 24, 1729. It contains annular eclipses from April 22, 2126 through June 22, 2829. There are no hybrid or total eclipses in this set. The series ends at member 71 as a partial eclipse on September 29, 2991. 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 45 at 9 minutes, 58 seconds on December 19, 2522. All eclipses in this series occur at the Moon’s descending node of orbit.[4]

Series members 5–27 occur between 1801 and 2200:
5 6 7

October 7, 1801

October 19, 1819

October 29, 1837
8 9 10

November 9, 1855

November 20, 1873

December 1, 1891
11 12 13

December 12, 1909

December 24, 1927

January 3, 1946
14 15 16

January 14, 1964

January 25, 1982

February 5, 2000
17 18 19

February 15, 2018

February 27, 2036

March 9, 2054
20 21 22

March 19, 2072

March 31, 2090

April 11, 2108
23 24 25

April 22, 2126

May 3, 2144

May 14, 2162
26 27

May 24, 2180

June 4, 2198

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 April 8, 1902 and August 31, 1989
April 7–8 January 24–25 November 12 August 31–September 1 June 19–20
108 110 112 114 116

April 8, 1902

August 31, 1913

June 19, 1917
118 120 122 124 126

April 8, 1921

January 24, 1925

November 12, 1928

August 31, 1932

June 19, 1936
128 130 132 134 136

April 7, 1940

January 25, 1944

November 12, 1947

September 1, 1951

June 20, 1955
138 140 142 144 146

April 8, 1959

January 25, 1963

November 12, 1966

August 31, 1970

June 20, 1974
148 150 152 154

April 7, 1978

January 25, 1982

November 12, 1985

August 31, 1989

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 November 16, 2134 (part of Saros 164) and October 16, 2145 (part of Saros 165) are also a part of this series but are not included in the table below.

Series members between 1801 and 2069

June 6, 1807
(Saros 134)

May 5, 1818
(Saros 135)

April 3, 1829
(Saros 136)

March 4, 1840
(Saros 137)

February 1, 1851
(Saros 138)

December 31, 1861
(Saros 139)

November 30, 1872
(Saros 140)

October 30, 1883
(Saros 141)

September 29, 1894
(Saros 142)

August 30, 1905
(Saros 143)

July 30, 1916
(Saros 144)

June 29, 1927
(Saros 145)

May 29, 1938
(Saros 146)

April 28, 1949
(Saros 147)

March 27, 1960
(Saros 148)

February 25, 1971
(Saros 149)

January 25, 1982
(Saros 150)

December 24, 1992
(Saros 151)

November 23, 2003
(Saros 152)

October 23, 2014
(Saros 153)

September 21, 2025
(Saros 154)

August 21, 2036
(Saros 155)

July 22, 2047
(Saros 156)

June 21, 2058
(Saros 157)

May 20, 2069
(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

May 25, 1808
(Saros 144)

May 4, 1837
(Saros 145)

April 15, 1866
(Saros 146)

March 26, 1895
(Saros 147)

March 5, 1924
(Saros 148)

February 14, 1953
(Saros 149)

January 24, 1982
(Saros 150)

January 4, 2011
(Saros 151)

December 15, 2039
(Saros 152)

November 24, 2068
(Saros 153)

November 4, 2097
(Saros 154)

October 16, 2126
(Saros 155)

September 26, 2155
(Saros 156)

September 4, 2184
(Saros 157)

References

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  1. ^ "January 25, 1982 Partial Solar Eclipse". timeanddate. Retrieved 9 August 2024.
  2. ^ "Partial Solar Eclipse of 1982 Jan 25". 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 150". eclipse.gsfc.nasa.gov.
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