| Annular eclipse | |
 Map | |
| Gamma | 0.4199 |
|---|---|
| Magnitude | 0.9759 |
| Maximum eclipse | |
| Duration | 172 s (2 min 52 s) |
| Coordinates | 3°54′N153°30′W / 3.9°N 153.5°W /3.9; -153.5 |
| Max. width of band | 95 km (59 mi) |
| Times (UTC) | |
| Greatest eclipse | 22:16:45 |
| References | |
| Saros | 132 (48 of 71) |
| Catalog # (SE5000) | 9632 |
An annularsolar eclipse will occur at the Moon'sdescending node of orbit between Sunday, January 16 and Monday, January 17, 2056,[1] with amagnitude of 0.9759. 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. The Moon's apparent diameter will be near the average diameter because it will occur 6.25 days afterperigee (on January 10, 2056, at 16:50 UTC) and 7.2 days beforeapogee (on January 24, 2056, at 2:20 UTC).[2]
The path of annularity will be visible from parts of theMarshall Islands, northernMexico, andTexas. A partial solar eclipse will also be visible for parts ofOceania,Hawaii, western and centralNorth America, andCentral America.
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 January 16 at 19:30:21.0 UTC |
| First Umbral External Contact | 2056 January 16 at 20:34:43.8 UTC |
| First Central Line | 2056 January 16 at 20:36:03.0 UTC |
| First Umbral Internal Contact | 2056 January 16 at 20:37:22.3 UTC |
| First Penumbral Internal Contact | 2056 January 16 at 22:02:03.4 UTC |
| Ecliptic Conjunction | 2056 January 16 at 22:12:06.7 UTC |
| Greatest Eclipse | 2056 January 16 at 22:16:45.2 UTC |
| Greatest Duration | 2056 January 16 at 22:20:15.4 UTC |
| Equatorial Conjunction | 2056 January 16 at 22:21:03.0 UTC |
| Last Penumbral Internal Contact | 2056 January 16 at 22:31:18.8 UTC |
| Last Umbral Internal Contact | 2056 January 16 at 23:56:02.7 UTC |
| Last Central Line | 2056 January 16 at 23:57:25.0 UTC |
| Last Umbral External Contact | 2056 January 16 at 23:58:47.2 UTC |
| Last Penumbral External Contact | 2056 January 17 at 01:03:13.9 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.97595 |
| Eclipse Obscuration | 0.95248 |
| Gamma | 0.41993 |
| Sun Right Ascension | 19h54m06.4s |
| Sun Declination | -20°50'41.3" |
| Sun Semi-Diameter | 16'15.5" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 19h53m57.0s |
| Moon Declination | -20°26'45.0" |
| Moon Semi-Diameter | 15'38.4" |
| Moon Equatorial Horizontal Parallax | 0°57'23.8" |
| ΔT | 87.8 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.
| January 16 Descending node (new moon) | February 1 Ascending node (full moon) |
|---|---|
|  |
| Annular solar eclipse Solar Saros 132 | Penumbral lunar eclipse Lunar Saros 144 |
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 132, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on August 13, 1208. It contains annular eclipses from March 17, 1569 through March 12, 2146; hybrid eclipses on March 23, 2164 and April 3, 2182; and total eclipses from April 14, 2200 through June 19, 2308. The series ends at member 71 as a partial eclipse on September 25, 2470. 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 25 at 6 minutes, 56 seconds on May 9, 1641, and the longest duration of totality will be produced by member 61 at 2 minutes, 14 seconds on June 8, 2290. All eclipses in this series occur at the Moon’sdescending node of orbit.[5]
| Series members 34–56 occur between 1801 and 2200: | |||
|---|---|---|---|
| 34 | 35 | 36 | |
 August 17, 1803 |  August 27, 1821 |  September 7, 1839 | |
| 37 | 38 | 39 | |
 September 18, 1857 |  September 29, 1875 |  October 9, 1893 | |
| 40 | 41 | 42 | |
 October 22, 1911 |  November 1, 1929 |  November 12, 1947 | |
| 43 | 44 | 45 | |
 November 23, 1965 |  December 4, 1983 |  December 14, 2001 | |
| 46 | 47 | 48 | |
 December 26, 2019 |  January 5, 2038 | January 16, 2056 | |
| 49 | 50 | 51 | |
 January 27, 2074 |  February 7, 2092 |  February 18, 2110 | |
| 52 | 53 | 54 | |
 March 1, 2128 |  March 12, 2146 |  March 23, 2164 | |
| 55 | 56 | ||
 April 3, 2182 |  April 14, 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 descending node.
| 22 eclipse events between June 12, 2029 and November 4, 2116 | ||||
|---|---|---|---|---|
| June 11–12 | March 30–31 | January 16 | November 4–5 | August 23–24 |
| 118 | 120 | 122 | 124 | 126 |
 June 12, 2029 |  March 30, 2033 |  January 16, 2037 |  November 4, 2040 |  August 23, 2044 |
| 128 | 130 | 132 | 134 | 136 |
 June 11, 2048 |  March 30, 2052 | January 16, 2056 |  November 5, 2059 |  August 24, 2063 |
| 138 | 140 | 142 | 144 | 146 |
 June 11, 2067 |  March 31, 2071 |  January 16, 2075 |  November 4, 2078 |  August 24, 2082 |
| 148 | 150 | 152 | 154 | 156 |
 June 11, 2086 |  March 31, 2090 |  January 16, 2094 |  November 4, 2097 |  August 24, 2101 |
| 158 | 160 | 162 | 164 | |
 June 12, 2105 |  November 4, 2116 | |||
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 | ||||
|---|---|---|---|---|
 January 1, 1805 (Saros 109) |  October 31, 1826 (Saros 111) |  August 28, 1848 (Saros 113) | ||
 July 29, 1859 (Saros 114) |  June 28, 1870 (Saros 115) |  May 27, 1881 (Saros 116) |  April 26, 1892 (Saros 117) |  March 29, 1903 (Saros 118) |
 February 25, 1914 (Saros 119) |  January 24, 1925 (Saros 120) |  December 25, 1935 (Saros 121) |  November 23, 1946 (Saros 122) |  October 23, 1957 (Saros 123) |
 September 22, 1968 (Saros 124) |  August 22, 1979 (Saros 125) |  July 22, 1990 (Saros 126) |  June 21, 2001 (Saros 127) |  May 20, 2012 (Saros 128) |
 April 20, 2023 (Saros 129) |  March 20, 2034 (Saros 130) |  February 16, 2045 (Saros 131) | January 16, 2056 (Saros 132) |  December 17, 2066 (Saros 133) |
 November 15, 2077 (Saros 134) |  October 14, 2088 (Saros 135) |  September 14, 2099 (Saros 136) |  August 15, 2110 (Saros 137) |  July 14, 2121 (Saros 138) |
 June 13, 2132 (Saros 139) |  May 14, 2143 (Saros 140) |  April 12, 2154 (Saros 141) |  March 12, 2165 (Saros 142) |  February 10, 2176 (Saros 143) |
 January 9, 2187 (Saros 144) |  December 9, 2197 (Saros 145) | |||
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 | ||
|---|---|---|
 June 26, 1824 (Saros 124) |  June 6, 1853 (Saros 125) |  May 17, 1882 (Saros 126) |
 April 28, 1911 (Saros 127) |  April 7, 1940 (Saros 128) |  March 18, 1969 (Saros 129) |
 February 26, 1998 (Saros 130) |  February 6, 2027 (Saros 131) | January 16, 2056 (Saros 132) |
 December 27, 2084 (Saros 133) |  December 8, 2113 (Saros 134) |  November 17, 2142 (Saros 135) |
 October 29, 2171 (Saros 136) |  October 9, 2200 (Saros 137) | |
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