# Solar eclipse of August 12, 1942

A partial solar eclipse occurred at the Moon's ascending node of orbit on Wednesday, August 12, 1942, with a magnitude of 0.0561. A solar eclipse occurs when the Moon passes between Earth and the Sun, 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.
A partial eclipse was visible for parts of Antarctica. This was the last of 72 solar eclipses in Solar Saros 115.

## Eclipse details

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.
August 12, 1942 Solar Eclipse Times :
| Event | Time (UTC) |
| First Penumbral External Contact | 1942 August 12 at 02:08:33.6 UTC |
| Ecliptic Conjunction | 1942 August 12 at 02:28:04.4 UTC |
| Greatest Eclipse | 1942 August 12 at 02:45:11.6 UTC |
| Last Penumbral External Contact | 1942 August 12 at 03:21:27.7 UTC |
| Equatorial Conjunction | 1942 August 12 at 03:24:16.4 UTC |
August 12, 1942 Solar Eclipse Parameters :
| Parameter | Value |
| Eclipse Magnitude | 0.05620 |
| Eclipse Obscuration | 0.01566 |
| Gamma | −1.52444 |
| Sun Right Ascension | 09h24m47.6s |
| Sun Declination | +15°12'09.3" |
| Sun Semi-Diameter | 15'47.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 09h23m32.6s |
| Moon Declination | +13°50'08.2" |
| Moon Semi-Diameter | 15'03.2" |
| Moon Equatorial Horizontal Parallax | 0°55'14.6" |
| ΔT | 25.5 s |

## Eclipse season

This eclipse is part of an eclipse 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 a fortnight. The first and last eclipse in this sequence is separated by one synodic month.
Eclipse season of August–September 1942 :
| August 12 Ascending node (new moon) | August 26 Descending node (full moon) | September 10 Ascending node (new moon) |
| Partial solar eclipse Solar Saros 115 | Total lunar eclipse Lunar Saros 127 | Partial solar eclipse Solar Saros 153 |

## Related eclipses
### Eclipses in 1942

* A total lunar eclipse on March 3.
* A partial solar eclipse on March 16.
* A partial solar eclipse on August 12.
* A total lunar eclipse on August 26.
* A partial solar eclipse on September 10.

### Metonic

* Followed by: Solar eclipse of May 30, 1946

### Tzolkinex

* Preceded by: Solar eclipse of June 30, 1935

### Half-Saros

* Preceded by: Lunar eclipse of August 5, 1933
* Followed by: Lunar eclipse of August 17, 1951

### Tritos

* Preceded by: Solar eclipse of September 12, 1931
* Followed by: Solar eclipse of July 11, 1953

### Solar Saros 115

* Preceded by: Solar eclipse of July 31, 1924

### Inex

* Preceded by: Solar eclipse of August 31, 1913
* Followed by: Solar eclipse of July 22, 1971

### Triad

* Followed by: Solar eclipse of June 12, 2029

### Solar eclipses of 1942–1946

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.
The partial solar eclipses on March 16, 1942 and September 10, 1942 occur in the previous lunar year eclipse set, and the partial solar eclipses on May 30, 1946 and November 23, 1946 occur in the next lunar year eclipse set.
Solar eclipse series sets from 1942 to 1946 :
| Ascending node | Ascending node | Ascending node | Descending node | Descending node | Descending node |
| Saros | Map | Gamma | Saros | Map | Gamma |
| 115 | August 12, 1942 Partial | −1.5244 | 120 | February 4, 1943 Total | 0.8734 |
| 125 | August 1, 1943 Annular | −0.8041 | 130 | January 25, 1944 Total | 0.2025 |
| 135 | July 20, 1944 Annular | −0.0314 | 140 | January 14, 1945 Annular | −0.4937 |
| 145 | July 9, 1945 Total | 0.7356 | 150 | January 3, 1946 Partial | −1.2392 |
| 155 | June 29, 1946 Partial | 1.4361 |

### Saros 115

This eclipse is a part of Saros series 115, repeating every 18 years, 11 days, and containing 72 events. The series started with a partial solar eclipse on June 21, 662 AD. It contains total eclipses from October 7, 842 AD through November 2, 1491; hybrid eclipses from November 12, 1509 through December 15, 1563; and annular eclipses from December 25, 1581 through May 27, 1816. The series ends at member 72 as a partial eclipse on August 12, 1942. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
The longest duration of totality was produced by member 36 at 6 minutes, 24 seconds on July 5, 1293, and the longest duration of annularity was produced by member 65 at 1 minutes, 54 seconds on May 27, 1816. All eclipses in this series occur at the Moon’s ascending node of orbit.
Series members 65–72 occur between 1801 and 1942: :
| 65 | 66 | 67 |
| May 27, 1816 | June 7, 1834 | June 17, 1852 |
| 68 | 69 | 70 |
| June 28, 1870 | July 9, 1888 | July 21, 1906 |
| 71 | 72 |
| July 31, 1924 | August 12, 1942 |

### Metonic series

The metonic 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.
22 eclipse events between January 5, 1935 and August 11, 2018 :
| January 4–5 | October 23–24 | August 10–12 | May 30–31 | March 18–19 |
| 111 | 113 | 115 | 117 | 119 |
| January 5, 1935 | | August 12, 1942 | May 30, 1946 | March 18, 1950 |
| 121 | 123 | 125 | 127 | 129 |
| January 5, 1954 | October 23, 1957 | August 11, 1961 | May 30, 1965 | March 18, 1969 |
| 131 | 133 | 135 | 137 | 139 |
| January 4, 1973 | October 23, 1976 | August 10, 1980 | May 30, 1984 | March 18, 1988 |
| 141 | 143 | 145 | 147 | 149 |
| January 4, 1992 | October 24, 1995 | August 11, 1999 | May 31, 2003 | March 19, 2007 |
| 151 | 153 | 155 |
| January 4, 2011 | October 23, 2014 | August 11, 2018 |

### Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic 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 1866 and 2200 :
| March 16, 1866 (Saros 108) | | | December 13, 1898 (Saros 111) | |
| | September 12, 1931 (Saros 114) | August 12, 1942 (Saros 115) | July 11, 1953 (Saros 116) | June 10, 1964 (Saros 117) |
| May 11, 1975 (Saros 118) | April 9, 1986 (Saros 119) | March 9, 1997 (Saros 120) | February 7, 2008 (Saros 121) | January 6, 2019 (Saros 122) |
| December 5, 2029 (Saros 123) | November 4, 2040 (Saros 124) | October 4, 2051 (Saros 125) | September 3, 2062 (Saros 126) | August 3, 2073 (Saros 127) |
| July 3, 2084 (Saros 128) | June 2, 2095 (Saros 129) | May 3, 2106 (Saros 130) | April 2, 2117 (Saros 131) | March 1, 2128 (Saros 132) |
| January 30, 2139 (Saros 133) | December 30, 2149 (Saros 134) | November 27, 2160 (Saros 135) | October 29, 2171 (Saros 136) | September 27, 2182 (Saros 137) |
| August 26, 2193 (Saros 138) |

### Inex series

This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic 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 :
| October 31, 1826 (Saros 111) | | |
| August 31, 1913 (Saros 114) | August 12, 1942 (Saros 115) | July 22, 1971 (Saros 116) |
| July 1, 2000 (Saros 117) | June 12, 2029 (Saros 118) | May 22, 2058 (Saros 119) |
| May 2, 2087 (Saros 120) | April 13, 2116 (Saros 121) | March 23, 2145 (Saros 122) |
| March 3, 2174 (Saros 123) | | |