| Partial eclipse | |
 Map | |
| Gamma | −1.4852 |
|---|---|
| Magnitude | 0.0879 |
| Maximum eclipse | |
| Coordinates | 68°48′S69°54′W / 68.8°S 69.9°W /-68.8; -69.9 |
| Times (UTC) | |
| Greatest eclipse | 17:53:18 |
| References | |
| Saros | 158 (1 of 70) |
| Catalog # (SE5000) | 9662 |
A partialsolar eclipse will occur at the Moon'sdescending node of orbit on Monday, May 20, 2069,[1] with amagnitude of 0.0879. 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 partial solar eclipse will be visible for parts of theAntarctic Peninsula and extreme southernChile andArgentina. This event will mark the beginning ofSolar Saros 158.
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 | 2069 May 20 at 17:14:39.1 UTC |
| Equatorial Conjunction | 2069 May 20 at 17:35:14.2 UTC |
| Greatest Eclipse | 2069 May 20 at 17:53:17.8 UTC |
| Ecliptic Conjunction | 2069 May 20 at 18:07:59.8 UTC |
| Last Penumbral External Contact | 2069 May 20 at 18:32:06.9 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.08791 |
| Eclipse Obscuration | 0.03123 |
| Gamma | −1.48519 |
| Sun Right Ascension | 03h52m35.6s |
| Sun Declination | +20°12'26.5" |
| Sun Semi-Diameter | 15'48.3" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 03h53m19.8s |
| Moon Declination | +18°43'03.9" |
| Moon Semi-Diameter | 16'32.8" |
| Moon Equatorial Horizontal Parallax | 1°00'43.6" |
| ΔT | 97.1 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. The first and last eclipse in this sequence is separated by onesynodic month.
| April 21 Descending node (new moon) | May 6 Ascending node (full moon) | May 20 Descending node (new moon) |
|---|---|---|
 |  | |
| Partial solar eclipse Solar Saros 120 | Total lunar eclipse Lunar Saros 132 | Partial solar eclipse Solar Saros 158 |
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 onFebruary 5, 2065 andAugust 2, 2065 occur in the previous lunar year eclipse set, and the partial solar eclipses onApril 21, 2069 andOctober 15, 2069 occur in the next lunar year eclipse set.
| Solar eclipse series sets from 2065 to 2069 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 118 | July 3, 2065 Partial | 1.4619 | 123 | December 27, 2065 Partial | −1.0688 | |
| 128 | June 22, 2066 Annular | 0.733 | 133 | December 17, 2066 Total | −0.4043 | |
| 138 | June 11, 2067 Annular | −0.0387 | 143 | December 6, 2067 Hybrid | 0.2845 | |
| 148 | May 31, 2068 Total | −0.797 | 153 | November 24, 2068 Partial | 1.0299 | |
| 158 | May 20, 2069 Partial | −1.4852 | ||||
This eclipse is a part ofSaros series 158, repeating every 18 years, 11 days, and containing 70 events. The series will start with a partial solar eclipse onMay 20, 2069. It contains total eclipses from August 5, 2195 through August 13, 2808; hybrid eclipses on August 24, 2826 and September 3, 2844; and annular eclipses from September 15, 2862 through February 27, 3133. The series ends at member 70 as a partial eclipse on June 16, 3313. 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 will be produced by member 10 at 4 minutes, 43 seconds on August 28, 2231, and the longest duration of annularity will be produced by member 57 at 6 minutes, 7 seconds on January 25, 3079. All eclipses in this series occur at the Moon’sdescending node of orbit.[4]
| Series members 1–8 occur between 2069 and 2200: | ||
|---|---|---|
| 1 | 2 | 3 |
May 20, 2069 |  June 1, 2087 |  June 12, 2105 |
| 4 | 5 | 6 |
 June 23, 2123 |  July 3, 2141 |  July 15, 2159 |
| 7 | 8 | |
 July 25, 2177 |  August 5, 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.
| 21 eclipse events between May 21, 1993 and May 20, 2069 | ||||
|---|---|---|---|---|
| May 20–21 | March 9 | December 25–26 | October 13–14 | August 1–2 |
| 118 | 120 | 122 | 124 | 126 |
 May 21, 1993 |  March 9, 1997 |  December 25, 2000 |  October 14, 2004 |  August 1, 2008 |
| 128 | 130 | 132 | 134 | 136 |
 May 20, 2012 |  March 9, 2016 |  December 26, 2019 |  October 14, 2023 |  August 2, 2027 |
| 138 | 140 | 142 | 144 | 146 |
 May 21, 2031 |  March 9, 2035 |  December 26, 2038 |  October 14, 2042 |  August 2, 2046 |
| 148 | 150 | 152 | 154 | 156 |
 May 20, 2050 |  March 9, 2054 |  December 26, 2057 |  October 13, 2061 |  August 2, 2065 |
| 158 | ||||
May 20, 2069 | ||||
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.
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) |
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 2069 | ||
|---|---|---|
 November 18, 1808 (Saros 149) |  October 29, 1837 (Saros 150) |  October 8, 1866 (Saros 151) |
 September 18, 1895 (Saros 152) |  August 30, 1924 (Saros 153) |  August 9, 1953 (Saros 154) |
 July 20, 1982 (Saros 155) |  July 1, 2011 (Saros 156) | |
May 20, 2069 (Saros 158) | ||
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