Solar eclipse of December 15, 1982

Solar eclipse of December 15, 1982
Solar eclipse of December 15, 1982
	Map
Type of eclipse
Nature	Partial
Gamma	1.1293
Magnitude	0.735
Maximum eclipse
Coordinates	65°18′N 56°54′E / 65.3°N 56.9°E
Times (UTC)
Greatest eclipse	9:32:09
References
Saros	122 (56 of 70)
Catalog # (SE5000)	9471

A partial solar eclipse occurred at the Moon's descending node of orbit on Wednesday, December 15, 1982,^[1] with a magnitude of 0.735. 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 last of four partial solar eclipses in 1982, with the others occurring on January 25, June 21, and July 20.

A partial eclipse was visible for parts of Northeast Africa, Europe, the Middle East, South Asia, and Central Asia.

Eclipse details

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]

December 15, 1982 Solar Eclipse Times
Event	Time (UTC)
First Penumbral External Contact	1982 December 15 at 07:22:50.6 UTC
Equatorial Conjunction	1982 December 15 at 09:11:50.4 UTC
Ecliptic Conjunction	1982 December 15 at 09:18:56.3 UTC
Greatest Eclipse	1982 December 15 at 09:32:08.9 UTC
Last Penumbral External Contact	1982 December 15 at 11:41:38.8 UTC

December 15, 1982 Solar Eclipse Parameters
Parameter	Value
Eclipse Magnitude	0.73506
Eclipse Obscuration	0.64327
Gamma	1.12928
Sun Right Ascension	17h29m51.3s
Sun Declination	-23°15'36.8"
Sun Semi-Diameter	16'15.0"
Sun Equatorial Horizontal Parallax	08.9"
Moon Right Ascension	17h30m31.0s
Moon Declination	-22°15'08.5"
Moon Semi-Diameter	14'47.8"
Moon Equatorial Horizontal Parallax	0°54'18.4"
ΔT	52.9 s

Eclipse season

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 December 1982
December 15 Descending node (new moon)	December 30 Ascending node (full moon)

Partial solar eclipse Solar Saros 122	Total lunar eclipse Lunar Saros 134

Related eclipses

Solar eclipses of 1982–1985

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 122

This eclipse is a part of Saros series 122, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on April 17, 991 AD. It contains total eclipses from July 12, 1135 through August 3, 1171; hybrid eclipses on August 13, 1189 and August 25, 1207; and annular eclipses from September 4, 1225 through October 10, 1874. The series ends at member 70 as a partial eclipse on May 17, 2235. 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 9 at 1 minutes, 25 seconds on July 12, 1135, and the longest duration of annularity was produced by member 50 at 6 minutes, 28 seconds on October 10, 1874. All eclipses in this series occur at the Moon’s descending node of orbit.^[4]

Series members 46–68 occur between 1801 and 2200:
46	47	48
August 28, 1802	September 7, 1820	September 18, 1838
49	50	51
September 29, 1856	October 10, 1874	October 20, 1892
52	53	54
November 2, 1910	November 12, 1928	November 23, 1946
55	56	57
December 4, 1964	December 15, 1982	December 25, 2000
58	59	60
January 6, 2019	January 16, 2037	January 27, 2055
61	62	63
February 7, 2073	February 18, 2091	March 1, 2109
64	65	66
March 13, 2127	March 23, 2145	April 3, 2163
67	68
April 14, 2181	April 25, 2199

Metonic series

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.

21 eclipse events between July 22, 1971 and July 22, 2047
July 22	May 9–11	February 26–27	December 14–15	October 2–3
116	118	120	122	124
July 22, 1971	May 11, 1975	February 26, 1979	December 15, 1982	October 3, 1986
126	128	130	132	134
July 22, 1990	May 10, 1994	February 26, 1998	December 14, 2001	October 3, 2005
136	138	140	142	144
July 22, 2009	May 10, 2013	February 26, 2017	December 14, 2020	October 2, 2024
146	148	150	152	154
July 22, 2028	May 9, 2032	February 27, 2036	December 15, 2039	October 3, 2043
156
July 22, 2047

Tritos series

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 1801 and 2200
March 25, 1819 (Saros 107)	February 23, 1830 (Saros 108)	January 22, 1841 (Saros 109)		November 21, 1862 (Saros 111)
		August 20, 1895 (Saros 114)	July 21, 1906 (Saros 115)	June 19, 1917 (Saros 116)
May 19, 1928 (Saros 117)	April 19, 1939 (Saros 118)	March 18, 1950 (Saros 119)	February 15, 1961 (Saros 120)	January 16, 1972 (Saros 121)
December 15, 1982 (Saros 122)	November 13, 1993 (Saros 123)	October 14, 2004 (Saros 124)	September 13, 2015 (Saros 125)	August 12, 2026 (Saros 126)
July 13, 2037 (Saros 127)	June 11, 2048 (Saros 128)	May 11, 2059 (Saros 129)	April 11, 2070 (Saros 130)	March 10, 2081 (Saros 131)
February 7, 2092 (Saros 132)	January 8, 2103 (Saros 133)	December 8, 2113 (Saros 134)	November 6, 2124 (Saros 135)	October 7, 2135 (Saros 136)
September 6, 2146 (Saros 137)	August 5, 2157 (Saros 138)	July 5, 2168 (Saros 139)	June 5, 2179 (Saros 140)	May 4, 2190 (Saros 141)

Inex series

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
April 14, 1809 (Saros 116)	March 25, 1838 (Saros 117)	March 6, 1867 (Saros 118)
February 13, 1896 (Saros 119)	January 24, 1925 (Saros 120)	January 5, 1954 (Saros 121)
December 15, 1982 (Saros 122)	November 25, 2011 (Saros 123)	November 4, 2040 (Saros 124)
October 15, 2069 (Saros 125)	September 25, 2098 (Saros 126)	September 6, 2127 (Saros 127)
August 16, 2156 (Saros 128)	July 26, 2185 (Saros 129)