| Annular eclipse | |
 Map | |
| Gamma | 0.4251 |
|---|---|
| Magnitude | 0.9798 |
| Maximum eclipse | |
| Duration | 141 s (2 min 21 s) |
| Coordinates | 6°36′N78°48′E / 6.6°N 78.8°E /6.6; 78.8 |
| Max. width of band | 79 km (49 mi) |
| Times (UTC) | |
| Greatest eclipse | 6:44:15 |
| References | |
| Saros | 132 (49 of 71) |
| Catalog # (SE5000) | 9673 |
An annularsolar eclipse will occur at the Moon'sdescending node of orbit on Saturday, January 27, 2074,[1] with amagnitude of 0.9798. 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 5.2 days afterapogee (on January 21, 2074, at 13:40 UTC), the Moon's apparent diameter will be smaller.[2]
The path of annularity will be visible from parts of easternChad,Sudan, northernSouth Sudan,Ethiopia,Somalia, theMaldives,Sri Lanka, theAndaman and Nicobar Islands,Myanmar,Thailand,Laos,Vietnam, southeasternChina, and southwesternJapan. A partial solar eclipse will also be visible for parts ofCentral Africa,East Africa,Eastern Europe, andAsia.
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 | 2074 January 27 at 03:58:42.2 UTC |
| First Umbral External Contact | 2074 January 27 at 05:02:58.1 UTC |
| First Central Line | 2074 January 27 at 05:04:09.1 UTC |
| First Umbral Internal Contact | 2074 January 27 at 05:05:20.2 UTC |
| First Penumbral Internal Contact | 2074 January 27 at 06:31:06.3 UTC |
| Ecliptic Conjunction | 2074 January 27 at 06:39:34.7 UTC |
| Greatest Eclipse | 2074 January 27 at 06:44:15.3 UTC |
| Equatorial Conjunction | 2074 January 27 at 06:51:50.3 UTC |
| Last Penumbral Internal Contact | 2074 January 27 at 06:57:10.8 UTC |
| Last Umbral Internal Contact | 2074 January 27 at 08:23:02.8 UTC |
| Last Central Line | 2074 January 27 at 18:06:19.2 UTC |
| Greatest Duration | 2074 January 27 at 08:24:16.9 UTC |
| Last Umbral External Contact | 2074 January 27 at 08:24:16.9 UTC |
| Last Penumbral External Contact | 2074 January 27 at 09:29:51.4 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.97978 |
| Eclipse Obscuration | 0.95998 |
| Gamma | 0.42511 |
| Sun Right Ascension | 20h40m20.9s |
| Sun Declination | -18°20'28.4" |
| Sun Semi-Diameter | 16'14.5" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 20h40m04.5s |
| Moon Declination | -17°56'22.6" |
| Moon Semi-Diameter | 15'41.1" |
| Moon Equatorial Horizontal Parallax | 0°57'33.8" |
| ΔT | 100.6 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 27 Descending node (new moon) | February 11 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 onJune 1, 2076 andNovember 26, 2076 occur in the next lunar year eclipse set.
| Solar eclipse series sets from 2073 to 2076 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 122 | February 7, 2073 Partial | 1.1651 | 127 | August 3, 2073 Total | −0.8763 | |
| 132 | January 27, 2074 Annular | 0.4251 | 137 | July 24, 2074 Annular | −0.1242 | |
| 142 | January 16, 2075 Total | −0.2799 | 147 | July 13, 2075 Annular | 0.6583 | |
| 152 | January 6, 2076 Total | −0.9373 | 157 | July 1, 2076 Partial | 1.4005 | |
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 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 1801 and 2200 | ||||
|---|---|---|---|---|
 March 14, 1801 (Saros 107) |  February 12, 1812 (Saros 108) |  January 12, 1823 (Saros 109) |  November 10, 1844 (Saros 111) | |
 August 9, 1877 (Saros 114) |  July 9, 1888 (Saros 115) |  June 8, 1899 (Saros 116) | ||
 May 9, 1910 (Saros 117) |  April 8, 1921 (Saros 118) |  March 7, 1932 (Saros 119) |  February 4, 1943 (Saros 120) |  January 5, 1954 (Saros 121) |
 December 4, 1964 (Saros 122) |  November 3, 1975 (Saros 123) |  October 3, 1986 (Saros 124) |  September 2, 1997 (Saros 125) |  August 1, 2008 (Saros 126) |
 July 2, 2019 (Saros 127) |  June 1, 2030 (Saros 128) |  April 30, 2041 (Saros 129) |  March 30, 2052 (Saros 130) |  February 28, 2063 (Saros 131) |
January 27, 2074 (Saros 132) |  December 27, 2084 (Saros 133) |  November 27, 2095 (Saros 134) |  October 26, 2106 (Saros 135) |  September 26, 2117 (Saros 136) |
 August 25, 2128 (Saros 137) |  July 25, 2139 (Saros 138) |  June 25, 2150 (Saros 139) |  May 25, 2161 (Saros 140) |  April 23, 2172 (Saros 141) |
 March 23, 2183 (Saros 142) |  February 21, 2194 (Saros 143) | |||
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 | ||
|---|---|---|
 July 27, 1813 (Saros 123) |  July 8, 1842 (Saros 124) |  June 18, 1871 (Saros 125) |
 May 28, 1900 (Saros 126) |  May 9, 1929 (Saros 127) |  April 19, 1958 (Saros 128) |
 March 29, 1987 (Saros 129) |  March 9, 2016 (Saros 130) |  February 16, 2045 (Saros 131) |
January 27, 2074 (Saros 132) |  January 8, 2103 (Saros 133) |  December 19, 2131 (Saros 134) |
 November 27, 2160 (Saros 135) |  November 8, 2189 (Saros 136) | |
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