| Annular eclipse | |
 Map | |
| Gamma | −0.0426 |
|---|---|
| Magnitude | 0.9878 |
| Maximum eclipse | |
| Duration | 86 s (1 min 26 s) |
| Coordinates | 19°24′N123°42′W / 19.4°N 123.7°W /19.4; -123.7 |
| Max. width of band | 43 km (27 mi) |
| Times (UTC) | |
| Greatest eclipse | 20:21:59 |
| References | |
| Saros | 137 (38 of 70) |
| Catalog # (SE5000) | 9633 |
An annularsolar eclipse will occur at the Moon'sascending node of orbit on Wednesday, July 12, 2056,[1] with amagnitude of 0.9878. Asolar eclipse occurs when theMoon passes betweenEarth and theSun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon'sapparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like anannulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 5.8 days afterapogee (on July 7, 2056, at 1:55 UTC), the Moon's apparent diameter will be smaller.[2]
The path of annularity will be visible from parts ofKiribati, northernEcuador, southernColombia, extreme northernPeru, and westernBrazil. A partial solar eclipse will also be visible for parts of easternOceania,Hawaii, theUnited States,Mexico,Central America, theCaribbean, and westernSouth America290.
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 | 2056 July 12 at 17:25:55.8 UTC |
| First Umbral External Contact | 2056 July 12 at 18:27:52.3 UTC |
| First Central Line | 2056 July 12 at 18:28:47.6 UTC |
| Greatest Duration | 2056 July 12 at 18:28:47.6 UTC |
| First Umbral Internal Contact | 2056 July 12 at 18:29:42.9 UTC |
| First Penumbral Internal Contact | 2056 July 12 at 19:31:43.2 UTC |
| Ecliptic Conjunction | 2056 July 12 at 20:21:30.5 UTC |
| Greatest Eclipse | 2056 July 12 at 20:21:59.4 UTC |
| Equatorial Conjunction | 2056 July 12 at 20:22:15.6 UTC |
| Last Penumbral Internal Contact | 2056 July 12 at 21:12:16.2 UTC |
| Last Umbral Internal Contact | 2056 July 12 at 22:14:17.7 UTC |
| Last Central Line | 2056 July 12 at 22:15:10.1 UTC |
| Last Umbral External Contact | 2056 July 12 at 22:16:02.6 UTC |
| Last Penumbral External Contact | 2056 July 12 at 23:17:56.6 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.98777 |
| Eclipse Obscuration | 0.97570 |
| Gamma | −0.04261 |
| Sun Right Ascension | 07h31m42.7s |
| Sun Declination | +21°45'32.5" |
| Sun Semi-Diameter | 15'44.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 07h31m42.1s |
| Moon Declination | +21°43'09.5" |
| Moon Semi-Diameter | 15'17.9" |
| Moon Equatorial Horizontal Parallax | 0°56'08.9" |
| ΔT | 88.1 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.
| June 27 Descending node (full moon) | July 12 Ascending node (new moon) | July 26 Descending node (full moon) |
|---|---|---|
 | |  |
| Penumbral lunar eclipse Lunar Saros 111 | Annular solar eclipse Solar Saros 137 | Penumbral lunar eclipse Lunar Saros 149 |
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 eclipses onMarch 9, 2054 andSeptember 2, 2054 occur in the previous lunar year eclipse set, and the partial solar eclipses onMay 22, 2058 andNovember 16, 2058 occur in the next lunar year eclipse set.
| Solar eclipse series sets from 2054 to 2058 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 117 | August 3, 2054 Partial | −1.4941 | 122 | January 27, 2055 Partial | 1.155 | |
| 127 | July 24, 2055 Total | −0.8012 | 132 | January 16, 2056 Annular | 0.4199 | |
| 137 | July 12, 2056 Annular | −0.0426 | 142 | January 5, 2057 Total | −0.2837 | |
| 147 | July 1, 2057 Annular | 0.7455 | 152 | December 26, 2057 Total | −0.9405 | |
| 157 | June 21, 2058 Partial | 1.4869 | ||||
This eclipse is a part ofSaros series 137, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on May 25, 1389. It contains total eclipses from August 20, 1533 through December 6, 1695; the first set of hybrid eclipses from December 17, 1713 through February 11, 1804; the first set of annular eclipses from February 21, 1822 through March 25, 1876; the second set of hybrid eclipses from April 6, 1894 throughApril 28, 1930; and the second set of annular eclipses fromMay 9, 1948 through April 13, 2507. The series ends at member 70 as a partial eclipse on June 28, 2633. 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 11 at 2 minutes, 55 seconds on September 10, 1569, and the longest duration of annularity will be produced by member 59 at 7 minutes, 5 seconds on February 28, 2435. All eclipses in this series occur at the Moon’sascending node of orbit.[5]
| Series members 24–46 occur between 1801 and 2200: | ||
|---|---|---|
| 24 | 25 | 26 |
 February 11, 1804 |  February 21, 1822 |  March 4, 1840 |
| 27 | 28 | 29 |
 March 15, 1858 |  March 25, 1876 |  April 6, 1894 |
| 30 | 31 | 32 |
 April 17, 1912 |  April 28, 1930 |  May 9, 1948 |
| 33 | 34 | 35 |
 May 20, 1966 |  May 30, 1984 |  June 10, 2002 |
| 36 | 37 | 38 |
 June 21, 2020 |  July 2, 2038 | July 12, 2056 |
| 39 | 40 | 41 |
 July 24, 2074 |  August 3, 2092 |  August 15, 2110 |
| 42 | 43 | 44 |
 August 25, 2128 |  September 6, 2146 |  September 16, 2164 |
| 45 | 46 | |
 September 27, 2182 |  October 9, 2200 | |
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 ascending node.
| 21 eclipse events between July 13, 2018 and July 12, 2094 | ||||
|---|---|---|---|---|
| July 12–13 | April 30–May 1 | February 16–17 | December 5–6 | September 22–23 |
| 117 | 119 | 121 | 123 | 125 |
 July 13, 2018 |  April 30, 2022 |  February 17, 2026 |  December 5, 2029 |  September 23, 2033 |
| 127 | 129 | 131 | 133 | 135 |
 July 13, 2037 |  April 30, 2041 |  February 16, 2045 |  December 5, 2048 |  September 22, 2052 |
| 137 | 139 | 141 | 143 | 145 |
July 12, 2056 |  April 30, 2060 |  February 17, 2064 |  December 6, 2067 |  September 23, 2071 |
| 147 | 149 | 151 | 153 | 155 |
 July 13, 2075 |  May 1, 2079 |  February 16, 2083 |  December 6, 2086 |  September 23, 2090 |
| 157 | ||||
 July 12, 2094 | ||||
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 | ||||
|---|---|---|---|---|
 June 26, 1805 (Saros 114) |  May 27, 1816 (Saros 115) |  April 26, 1827 (Saros 116) |  March 25, 1838 (Saros 117) |  February 23, 1849 (Saros 118) |
 January 23, 1860 (Saros 119) |  December 22, 1870 (Saros 120) |  November 21, 1881 (Saros 121) |  October 20, 1892 (Saros 122) |  September 21, 1903 (Saros 123) |
 August 21, 1914 (Saros 124) |  July 20, 1925 (Saros 125) |  June 19, 1936 (Saros 126) |  May 20, 1947 (Saros 127) |  April 19, 1958 (Saros 128) |
 March 18, 1969 (Saros 129) |  February 16, 1980 (Saros 130) |  January 15, 1991 (Saros 131) |  December 14, 2001 (Saros 132) |  November 13, 2012 (Saros 133) |
 October 14, 2023 (Saros 134) |  September 12, 2034 (Saros 135) |  August 12, 2045 (Saros 136) | July 12, 2056 (Saros 137) |  June 11, 2067 (Saros 138) |
 May 11, 2078 (Saros 139) |  April 10, 2089 (Saros 140) |  March 10, 2100 (Saros 141) |  February 8, 2111 (Saros 142) |  January 8, 2122 (Saros 143) |
 December 7, 2132 (Saros 144) |  November 7, 2143 (Saros 145) |  October 7, 2154 (Saros 146) |  September 5, 2165 (Saros 147) |  August 4, 2176 (Saros 148) |
 July 6, 2187 (Saros 149) |  June 4, 2198 (Saros 150) | |||
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 | ||
|---|---|---|
 December 20, 1824 (Saros 129) |  November 30, 1853 (Saros 130) |  November 10, 1882 (Saros 131) |
 October 22, 1911 (Saros 132) |  October 1, 1940 (Saros 133) |  September 11, 1969 (Saros 134) |
 August 22, 1998 (Saros 135) |  August 2, 2027 (Saros 136) | July 12, 2056 (Saros 137) |
 June 22, 2085 (Saros 138) |  June 3, 2114 (Saros 139) |  May 14, 2143 (Saros 140) |
 April 23, 2172 (Saros 141) | ||
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