| Partial eclipse | |
 Map | |
| Gamma | −1.4941 |
|---|---|
| Magnitude | 0.0655 |
| Maximum eclipse | |
| Coordinates | 69°48′S121°18′W / 69.8°S 121.3°W /-69.8; -121.3 |
| Times (UTC) | |
| Greatest eclipse | 18:04:02 |
| References | |
| Saros | 117 (71 of 71) |
| Catalog # (SE5000) | 9629 |
A partialsolar eclipse will occur at the Moon'sascending node of orbit on Monday, August 3, 2054,[1] with amagnitude of 0.0655. 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 a very small part ofAntarctica. This event will be the 71st and final event inSolar Saros 117.
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 | 2054 August 03 at 17:30:57.7 UTC |
| Ecliptic Conjunction | 2054 August 03 at 17:49:29.6 UTC |
| Greatest Eclipse | 2054 August 03 at 18:04:02.1 UTC |
| Equatorial Conjunction | 2054 August 03 at 18:32:59.0 UTC |
| Last Penumbral External Contact | 2054 August 03 at 18:36:52.3 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.06558 |
| Eclipse Obscuration | 0.02025 |
| Gamma | −1.49414 |
| Sun Right Ascension | 08h56m24.5s |
| Sun Declination | +17°17'09.2" |
| Sun Semi-Diameter | 15'45.7" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 08h55m14.2s |
| Moon Declination | +15°47'22.5" |
| Moon Semi-Diameter | 16'41.7" |
| Moon Equatorial Horizontal Parallax | 1°01'16.5" |
| ΔT | 86.9 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. The first and last eclipse in this sequence is separated by onesynodic month.
| August 3 Ascending node (new moon) | August 18 Descending node (full moon) | September 2 Ascending node (new moon) |
|---|---|---|
|  |  |
| Partial solar eclipse Solar Saros 117 | Total lunar eclipse Lunar Saros 129 | Partial solar eclipse Solar Saros 155 |
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 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 117, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on June 24, 792 AD. It contains annular eclipses from September 18, 936 AD through May 14, 1333; hybrid eclipses from May 25, 1351 through July 8, 1423; and total eclipses from July 18, 1441 throughMay 19, 1928. The series ends at member 71 as a partial eclipse onAugust 3, 2054. 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 16 at 9 minutes, 26 seconds on December 3, 1062, and the longest duration of totality was produced by member 62 at 4 minutes, 19 seconds onApril 26, 1892. All eclipses in this series occur at the Moon’sascending node of orbit.[4]
| Series members 57–71 occur between 1801 and 2054: | ||
|---|---|---|
| 57 | 58 | 59 |
 March 4, 1802 |  March 14, 1820 |  March 25, 1838 |
| 60 | 61 | 62 |
 April 5, 1856 |  April 16, 1874 |  April 26, 1892 |
| 63 | 64 | 65 |
 May 9, 1910 |  May 19, 1928 |  May 30, 1946 |
| 66 | 67 | 68 |
 June 10, 1964 |  June 21, 1982 |  July 1, 2000 |
| 69 | 70 | 71 |
 July 13, 2018 |  July 23, 2036 | August 3, 2054 |
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.
| 23 eclipse events between August 3, 2054 and October 16, 2145 | ||||
|---|---|---|---|---|
| August 3–4 | May 22–24 | March 10–11 | December 27–29 | October 14–16 |
| 117 | 119 | 121 | 123 | 125 |
August 3, 2054 |  May 22, 2058 |  March 11, 2062 |  December 27, 2065 |  October 15, 2069 |
| 127 | 129 | 131 | 133 | 135 |
 August 3, 2073 |  May 22, 2077 |  March 10, 2081 |  December 27, 2084 |  October 14, 2088 |
| 137 | 139 | 141 | 143 | 145 |
 August 3, 2092 |  May 22, 2096 |  March 10, 2100 |  December 29, 2103 |  October 16, 2107 |
| 147 | 149 | 151 | 153 | 155 |
 August 4, 2111 |  May 24, 2115 |  March 11, 2119 |  December 28, 2122 |  October 16, 2126 |
| 157 | 159 | 161 | 163 | 165 |
 August 4, 2130 |  May 23, 2134 |  October 16, 2145 | ||
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 2054 and 2200 | ||||
|---|---|---|---|---|
August 3, 2054 (Saros 117) |  July 3, 2065 (Saros 118) |  June 1, 2076 (Saros 119) |  May 2, 2087 (Saros 120) |  April 1, 2098 (Saros 121) |
 March 1, 2109 (Saros 122) |  January 30, 2120 (Saros 123) |  December 30, 2130 (Saros 124) |  November 28, 2141 (Saros 125) |  October 28, 2152 (Saros 126) |
 September 28, 2163 (Saros 127) |  August 27, 2174 (Saros 128) |  July 26, 2185 (Saros 129) |  June 26, 2196 (Saros 130) | |
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.
The partial solar eclipses on January 12, 1823 (part of Saros 109) and December 2, 1880 (part of Saros 111) are also a part of this series but are not included in the table below.
| Series members between 2054 and 2200 | ||
|---|---|---|
August 3, 2054 (Saros 117) |  July 15, 2083 (Saros 118) |  June 24, 2112 (Saros 119) |
 June 4, 2141 (Saros 120) |  May 16, 2170 (Saros 121) |  April 25, 2199 (Saros 122) |
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