| Partial eclipse | |
 Map | |
| Gamma | 1.1293 |
|---|---|
| Magnitude | 0.735 |
| Maximum eclipse | |
| Coordinates | 65°18′N56°54′E / 65.3°N 56.9°E /65.3; 56.9 |
| Times (UTC) | |
| Greatest eclipse | 9:32:09 |
| References | |
| Saros | 122 (56 of 70) |
| Catalog # (SE5000) | 9471 |
A partialsolar eclipse occurred at the Moon'sdescending node of orbit on Wednesday, December 15, 1982,[1] with amagnitude of 0.735. Asolar eclipse occurs when theMoon passes betweenEarth and theSun, 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 onJanuary 25,June 21, andJuly 20.
A partial eclipse was visible for parts ofNortheast Africa,Europe, theMiddle East,South Asia, andCentral Asia.
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]
| 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 |
| 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 |
This eclipse is part of aneclipse 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 afortnight.
| December 15 Descending node (new moon) | December 30 Ascending node (full moon) |
|---|---|
|  |
| Partial solar eclipse Solar Saros 122 | Total lunar eclipse Lunar Saros 134 |
This eclipse is a member of asemester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternatingnodes of the Moon's orbit.[3]
The partial solar eclipses onJanuary 25, 1982 andJuly 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 inGisborne, New Zealand | November 22, 1984 Total | −0.3132 | |
| 147 | May 19, 1985 Partial | 1.072 | 152 | November 12, 1985 Total | −0.9795 | |
This eclipse is a part ofSaros 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 oneexeligmos 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’sdescending 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 | |
Themetonic 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 | ||||
This eclipse is a part of atritos cycle, repeating at alternating nodes every 135synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with theanomalistic 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) |
This eclipse is a part of the long periodinex cycle, repeating at alternating nodes, every 358synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with theanomalistic 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) | |
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