| Partial eclipse | |
 Map | |
| Gamma | 1.0169 |
|---|---|
| Magnitude | 0.9849 |
| Maximum eclipse | |
| Coordinates | 71°36′N32°12′E / 71.6°N 32.2°E /71.6; 32.2 |
| Times (UTC) | |
| Greatest eclipse | 2:10:39 |
| References | |
| Saros | 120 (63 of 71) |
| Catalog # (SE5000) | 9621 |
A partialsolar eclipse will occur at the Moon'sdescending node of orbit between Monday, April 10 and Tuesday, April 11, 2051,[1] with amagnitude of 0.9849. 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.
The umbral shadow of the Moon will pass just above theNorth Pole. It will be the largest partial solar eclipse in 21st century.[2]
The maximal phase of the partial eclipse (0.98) will be recorded in theBarents Sea. The partial solar eclipse will be visible for parts ofAsia,Alaska, and westernCanada.
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.[3]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 2051 April 11 at 00:12:31.3 UTC |
| Ecliptic Conjunction | 2051 April 11 at 02:00:30.3 UTC |
| Greatest Eclipse | 2051 April 11 at 02:10:38.6 UTC |
| Equatorial Conjunction | 2051 April 11 at 02:41:35.1 UTC |
| Last Penumbral External Contact | 2051 April 11 at 04:08:32.1 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.98490 |
| Eclipse Obscuration | 0.98811 |
| Gamma | 1.01694 |
| Sun Right Ascension | 01h18m13.3s |
| Sun Declination | +08°15'12.8" |
| Sun Semi-Diameter | 15'57.8" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 01h17m01.7s |
| Moon Declination | +09°14'52.8" |
| Moon Semi-Diameter | 16'42.8" |
| Moon Equatorial Horizontal Parallax | 1°01'20.2" |
| ΔT | 84.9 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.
| April 11 Descending node (new moon) | April 26 Ascending node (full moon) |
|---|---|
|  |
| Partial solar eclipse Solar Saros 120 | Total lunar eclipse Lunar Saros 132 |
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.[4]
The partial solar eclipse onAugust 3, 2054 occurs in the next lunar year eclipse set.
| Solar eclipse series sets from 2051 to 2054 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 120 | April 11, 2051 Partial | 1.0169 | 125 | October 4, 2051 Partial | −1.2094 | |
| 130 | March 30, 2052 Total | 0.3238 | 135 | September 22, 2052 Annular | −0.448 | |
| 140 | March 20, 2053 Annular | −0.4089 | 145 | September 12, 2053 Total | 0.314 | |
| 150 | March 9, 2054 Partial | −1.1711 | 155 | September 2, 2054 Partial | 1.0215 | |
This eclipse is a part ofSaros series 120, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on May 27, 933 AD. It contains annular eclipses from August 11, 1059 through April 26, 1492; hybrid eclipses from May 8, 1510 through June 8, 1564; and total eclipses from June 20, 1582 throughMarch 30, 2033. The series ends at member 71 as a partial eclipse on July 7, 2195. 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 annularity was produced by member 11 at 6 minutes, 24 seconds on September 11, 1113, and the longest duration of totality was produced by member 60 at 2 minutes, 50 seconds onMarch 9, 1997. All eclipses in this series occur at the Moon’sdescending node of orbit.[5]
| Series members 50–71 occur between 1801 and 2195: | ||
|---|---|---|
| 50 | 51 | 52 |
 November 19, 1816 |  November 30, 1834 |  December 11, 1852 |
| 53 | 54 | 55 |
 December 22, 1870 |  January 1, 1889 |  January 14, 1907 |
| 56 | 57 | 58 |
 January 24, 1925 |  February 4, 1943 |  February 15, 1961 |
| 59 | 60 | 61 |
 February 26, 1979 |  March 9, 1997 |  March 20, 2015 |
| 62 | 63 | 64 |
 March 30, 2033 | April 11, 2051 |  April 21, 2069 |
| 65 | 66 | 67 |
 May 2, 2087 |  May 14, 2105 |  May 25, 2123 |
| 68 | 69 | 70 |
 June 4, 2141 |  June 16, 2159 |  June 26, 2177 |
| 71 | ||
 July 7, 2195 | ||
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.
| 22 eclipse events between June 23, 2047 and November 16, 2134 | ||||
|---|---|---|---|---|
| June 22–23 | April 10–11 | January 27–29 | November 15–16 | September 3–5 |
| 118 | 120 | 122 | 124 | 126 |
 June 23, 2047 | April 11, 2051 |  January 27, 2055 |  November 16, 2058 |  September 3, 2062 |
| 128 | 130 | 132 | 134 | 136 |
 June 22, 2066 |  April 11, 2070 |  January 27, 2074 |  November 15, 2077 |  September 3, 2081 |
| 138 | 140 | 142 | 144 | 146 |
 June 22, 2085 |  April 10, 2089 |  January 27, 2093 |  November 15, 2096 |  September 4, 2100 |
| 148 | 150 | 152 | 154 | 156 |
 June 22, 2104 |  April 11, 2108 |  January 29, 2112 |  November 16, 2115 |  September 5, 2119 |
| 158 | 160 | 162 | 164 | |
 June 23, 2123 |  November 16, 2134 | |||
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 2018 and 2200 | ||||
|---|---|---|---|---|
 July 13, 2018 (Saros 117) |  June 12, 2029 (Saros 118) |  May 11, 2040 (Saros 119) | April 11, 2051 (Saros 120) |  March 11, 2062 (Saros 121) |
 February 7, 2073 (Saros 122) |  January 7, 2084 (Saros 123) |  December 7, 2094 (Saros 124) |  November 6, 2105 (Saros 125) |  October 6, 2116 (Saros 126) |
 September 6, 2127 (Saros 127) |  August 5, 2138 (Saros 128) |  July 5, 2149 (Saros 129) |  June 4, 2160 (Saros 130) |  May 5, 2171 (Saros 131) |
 April 3, 2182 (Saros 132) |  March 3, 2193 (Saros 133) | |||
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 | ||
|---|---|---|
 September 19, 1819 (Saros 112) |  August 28, 1848 (Saros 113) |  August 9, 1877 (Saros 114) |
 July 21, 1906 (Saros 115) |  June 30, 1935 (Saros 116) |  June 10, 1964 (Saros 117) |
 May 21, 1993 (Saros 118) |  April 30, 2022 (Saros 119) | April 11, 2051 (Saros 120) |
 March 21, 2080 (Saros 121) |  March 1, 2109 (Saros 122) |  February 9, 2138 (Saros 123) |
 January 21, 2167 (Saros 124) |  December 31, 2195 (Saros 125) | |
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