# December 1945 lunar eclipse

A total lunar eclipse occurred at the Moon’s ascending node of orbit on Wednesday, December 19, 1945, with an umbral magnitude of 1.3424. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 1.6 days after perigee (on December 17, 1945, at 12:40 UTC), the Moon's apparent diameter was larger.

## Visibility

The eclipse was completely visible over much of North and South America, west Africa, Europe, and northern Russia, seen rising over the eastern Pacific Ocean and setting over east and southern Africa and much of Asia.

## Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
December 19, 1945 Lunar Eclipse Parameters :
| Parameter | Value |
| Penumbral Magnitude | 2.32932 |
| Umbral Magnitude | 1.34237 |
| Gamma | −0.28453 |
| Sun Right Ascension | 17h46m11.1s |
| Sun Declination | -23°24'29.1" |
| Sun Semi-Diameter | 16'15.4" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 05h46m20.2s |
| Moon Declination | +23°07'25.0" |
| Moon Semi-Diameter | 16'28.3" |
| Moon Equatorial Horizontal Parallax | 1°00'27.1" |
| ΔT | 27.3 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.
Eclipse season of December 1945–January 1946 :
| December 19 Ascending node (full moon) | January 3 Descending node (new moon) |
| Total lunar eclipse Lunar Saros 124 | Partial solar eclipse Solar Saros 150 |

## Related eclipses
### Eclipses in 1945

* An annular solar eclipse on January 14.
* A partial lunar eclipse on June 25.
* A total solar eclipse on July 9.
* A total lunar eclipse on December 19.

### Metonic

* Preceded by: Lunar eclipse of March 3, 1942
* Followed by: Lunar eclipse of October 7, 1949

### Tzolkinex

* Preceded by: Lunar eclipse of November 7, 1938
* Followed by: Lunar eclipse of January 29, 1953

### Half-Saros

* Preceded by: Solar eclipse of December 13, 1936
* Followed by: Solar eclipse of December 25, 1954

### Tritos

* Preceded by: Lunar eclipse of January 19, 1935
* Followed by: Lunar eclipse of November 18, 1956

### Lunar Saros 124

* Preceded by: Lunar eclipse of December 8, 1927
* Followed by: Lunar eclipse of December 30, 1963

### Inex

* Preceded by: Lunar eclipse of January 8, 1917
* Followed by: Lunar eclipse of November 29, 1974

### Triad

* Preceded by: Lunar eclipse of February 17, 1859
* Followed by: Lunar eclipse of October 18, 2032

### Lunar eclipses of 1944–1947

This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.
The penumbral lunar eclipses on February 9, 1944 and August 4, 1944 occur in the previous lunar year eclipse set.
Lunar eclipse series sets from 1944 to 1947 :
| Descending node | Descending node | Descending node | Descending node | Ascending node | Ascending node | Ascending node | Ascending node |
| Saros | Date Viewing | Type Chart | Gamma | Saros | Date Viewing | Type Chart | Gamma |
| 109 | 1944 Jul 06 | Penumbral | 1.2597 | 114 | 1944 Dec 29 | Penumbral | −1.0115 |
| 119 | 1945 Jun 25 | Partial | 0.5370 | 124 | 1945 Dec 19 | Total | −0.2845 |
| 129 | 1946 Jun 14 | Total | −0.2324 | 134 | 1946 Dec 08 | Total | 0.3864 |
| 139 | 1947 Jun 03 | Partial | −0.9850 | 144 | 1947 Nov 28 | Penumbral | 1.0838 |

### Saros 124

This eclipse is a part of Saros series 124, repeating every 18 years, 11 days, and containing 73 events. The series started with a penumbral lunar eclipse on August 17, 1152. It contains partial eclipses from March 21, 1513 through June 15, 1639; total eclipses from June 25, 1657 through April 18, 2144; and a second set of partial eclipses from April 29, 2162 through July 14, 2288. The series ends at member 73 as a penumbral eclipse on October 21, 2450.
The longest duration of totality was produced by member 39 at 101 minutes, 27 seconds on August 30, 1765. All eclipses in this series occur at the Moon’s ascending node of orbit.
| Greatest | First | First | First | First |
| The greatest eclipse of the series occurred on 1765 Aug 30, lasting 101 minutes, 27 seconds. | Penumbral | Partial | Total | Central |
| The greatest eclipse of the series occurred on 1765 Aug 30, lasting 101 minutes, 27 seconds. | 1152 Aug 17 | 1513 Mar 21 | 1657 Jun 25 | 1711 Jul 29 |
| Last ||||
| The greatest eclipse of the series occurred on 1765 Aug 30, lasting 101 minutes, 27 seconds. | Central | Total | Partial | Penumbral |
| The greatest eclipse of the series occurred on 1765 Aug 30, lasting 101 minutes, 27 seconds. | 1909 Nov 27 | 2144 Apr 18 | 2288 Jul 14 | 2450 Oct 21 |
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.
Series members 37–59 occur between 1801 and 2200: :
| 37 | 37 | 38 | 38 | 39 | 39 |
| 1801 Sep 22 | 1801 Sep 22 | 1819 Oct 03 | 1819 Oct 03 | 1837 Oct 13 | 1837 Oct 13 |
| 40 | 40 | 41 | 41 | 42 | 42 |
| 1855 Oct 25 | 1855 Oct 25 | 1873 Nov 04 | 1873 Nov 04 | 1891 Nov 16 | 1891 Nov 16 |
| 43 | 43 | 44 | 44 | 45 | 45 |
| 1909 Nov 27 | 1909 Nov 27 | 1927 Dec 08 | 1927 Dec 08 | 1945 Dec 19 | 1945 Dec 19 |
| 46 | 46 | 47 | 47 | 48 | 48 |
| 1963 Dec 30 | 1963 Dec 30 | 1982 Jan 09 | 1982 Jan 09 | 2000 Jan 21 | 2000 Jan 21 |
| 49 | 49 | 50 | 50 | 51 | 51 |
| 2018 Jan 31 | 2018 Jan 31 | 2036 Feb 11 | 2036 Feb 11 | 2054 Feb 22 | 2054 Feb 22 |
| 52 | 52 | 53 | 53 | 54 | 54 |
| 2072 Mar 04 | 2072 Mar 04 | 2090 Mar 15 | 2090 Mar 15 | 2108 Mar 27 | 2108 Mar 27 |
| 55 | 55 | 56 | 56 | 57 | 57 |
| 2126 Apr 07 | 2126 Apr 07 | 2144 Apr 18 | 2144 Apr 18 | 2162 Apr 29 | 2162 Apr 29 |
| 58 | 58 | 59 | 59 |
| 2180 May 09 | 2180 May 09 | 2198 May 20 | 2198 May 20 |

### 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 1801 and 2200 :
| 1804 Jan 26 (Saros 111) | 1804 Jan 26 (Saros 111) | 1814 Dec 26 (Saros 112) | 1814 Dec 26 (Saros 112) | 1825 Nov 25 (Saros 113) | 1825 Nov 25 (Saros 113) | 1836 Oct 24 (Saros 114) | 1836 Oct 24 (Saros 114) | 1847 Sep 24 (Saros 115) | 1847 Sep 24 (Saros 115) |
| 1858 Aug 24 (Saros 116) | 1858 Aug 24 (Saros 116) | 1869 Jul 23 (Saros 117) | 1869 Jul 23 (Saros 117) | 1880 Jun 22 (Saros 118) | 1880 Jun 22 (Saros 118) | 1891 May 23 (Saros 119) | 1891 May 23 (Saros 119) | 1902 Apr 22 (Saros 120) | 1902 Apr 22 (Saros 120) |
| 1913 Mar 22 (Saros 121) | 1913 Mar 22 (Saros 121) | 1924 Feb 20 (Saros 122) | 1924 Feb 20 (Saros 122) | 1935 Jan 19 (Saros 123) | 1935 Jan 19 (Saros 123) | 1945 Dec 19 (Saros 124) | 1945 Dec 19 (Saros 124) | 1956 Nov 18 (Saros 125) | 1956 Nov 18 (Saros 125) |
| 1967 Oct 18 (Saros 126) | 1967 Oct 18 (Saros 126) | 1978 Sep 16 (Saros 127) | 1978 Sep 16 (Saros 127) | 1989 Aug 17 (Saros 128) | 1989 Aug 17 (Saros 128) | 2000 Jul 16 (Saros 129) | 2000 Jul 16 (Saros 129) | 2011 Jun 15 (Saros 130) | 2011 Jun 15 (Saros 130) |
| 2022 May 16 (Saros 131) | 2022 May 16 (Saros 131) | 2033 Apr 14 (Saros 132) | 2033 Apr 14 (Saros 132) | 2044 Mar 13 (Saros 133) | 2044 Mar 13 (Saros 133) | 2055 Feb 11 (Saros 134) | 2055 Feb 11 (Saros 134) | 2066 Jan 11 (Saros 135) | 2066 Jan 11 (Saros 135) |
| 2076 Dec 10 (Saros 136) | 2076 Dec 10 (Saros 136) | 2087 Nov 10 (Saros 137) | 2087 Nov 10 (Saros 137) | 2098 Oct 10 (Saros 138) | 2098 Oct 10 (Saros 138) | 2109 Sep 09 (Saros 139) | 2109 Sep 09 (Saros 139) | 2120 Aug 09 (Saros 140) | 2120 Aug 09 (Saros 140) |
| 2131 Jul 10 (Saros 141) | 2131 Jul 10 (Saros 141) | 2142 Jun 08 (Saros 142) | 2142 Jun 08 (Saros 142) | 2153 May 08 (Saros 143) | 2153 May 08 (Saros 143) | 2164 Apr 07 (Saros 144) | 2164 Apr 07 (Saros 144) | 2175 Mar 07 (Saros 145) | 2175 Mar 07 (Saros 145) |
| 2186 Feb 04 (Saros 146) | 2186 Feb 04 (Saros 146) | 2197 Jan 04 (Saros 147) | 2197 Jan 04 (Saros 147) |

### 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 :
| 1801 Mar 30 (Saros 119) | 1801 Mar 30 (Saros 119) | 1830 Mar 09 (Saros 120) | 1830 Mar 09 (Saros 120) | 1859 Feb 17 (Saros 121) | 1859 Feb 17 (Saros 121) |
| 1888 Jan 28 (Saros 122) | 1888 Jan 28 (Saros 122) | 1917 Jan 08 (Saros 123) | 1917 Jan 08 (Saros 123) | 1945 Dec 19 (Saros 124) | 1945 Dec 19 (Saros 124) |
| 1974 Nov 29 (Saros 125) | 1974 Nov 29 (Saros 125) | 2003 Nov 09 (Saros 126) | 2003 Nov 09 (Saros 126) | 2032 Oct 18 (Saros 127) | 2032 Oct 18 (Saros 127) |
| 2061 Sep 29 (Saros 128) | 2061 Sep 29 (Saros 128) | 2090 Sep 08 (Saros 129) | 2090 Sep 08 (Saros 129) | 2119 Aug 20 (Saros 130) | 2119 Aug 20 (Saros 130) |
| 2148 Jul 31 (Saros 131) | 2148 Jul 31 (Saros 131) | 2177 Jul 11 (Saros 132) | 2177 Jul 11 (Saros 132) |

### Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two total solar eclipses of Solar Saros 131.
| December 13, 1936 | December 25, 1954 |