# May 1910 lunar eclipse

A total lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, May 24, 1910, with an umbral magnitude of 1.0950. 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 2.4 days after apogee (on May 21, 1910, at 18:30 UTC), the Moon's apparent diameter was smaller.
This lunar eclipse was the third of a tetrad, with four total lunar eclipses in series, the others being on June 4, 1909; November 27, 1909; and November 17, 1910.

## Visibility

The eclipse was completely visible over much of North America, South America, and Antarctica, seen rising over northwestern North America, eastern Australia, and the central Pacific Ocean and setting over Africa and Europe.

## Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
May 24, 1910 Lunar Eclipse Parameters :
| Parameter | Value |
| Penumbral Magnitude | 2.16249 |
| Umbral Magnitude | 1.09503 |
| Gamma | −0.39758 |
| Sun Right Ascension | 04h00m18.2s |
| Sun Declination | +20°36'19.8" |
| Sun Semi-Diameter | 15'47.5" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 15h59m50.9s |
| Moon Declination | -20°56'56.9" |
| Moon Semi-Diameter | 14'47.6" |
| Moon Equatorial Horizontal Parallax | 0°54'17.6" |
| ΔT | 10.9 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 May 1910 :
| May 9 Ascending node (new moon) | May 24 Descending node (full moon) |
| Total solar eclipse Solar Saros 117 | Total lunar eclipse Lunar Saros 129 |

## Related eclipses
### Eclipses in 1910

* A total solar eclipse on May 9.
* A total lunar eclipse on May 24.
* A partial solar eclipse on November 2.
* A total lunar eclipse on November 17.

### Metonic

* Preceded by: Lunar eclipse of August 4, 1906
* Followed by: Lunar eclipse of March 12, 1914

### Tzolkinex

* Preceded by: Lunar eclipse of April 12, 1903
* Followed by: Lunar eclipse of July 4, 1917

### Half-Saros

* Preceded by: Solar eclipse of May 18, 1901
* Followed by: Solar eclipse of May 29, 1919

### Tritos

* Preceded by: Lunar eclipse of June 23, 1899
* Followed by: Lunar eclipse of April 22, 1921

### Lunar Saros 129

* Preceded by: Lunar eclipse of May 11, 1892
* Followed by: Lunar eclipse of June 3, 1928

### Inex

* Preceded by: Lunar eclipse of June 12, 1881
* Followed by: Lunar eclipse of May 3, 1939

### Triad

* Preceded by: Lunar eclipse of July 23, 1823
* Followed by: Lunar eclipse of March 24, 1997

### Lunar eclipses of 1908–1911

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 January 18, 1908 and July 13, 1908 occur in the previous lunar year eclipse set.
Lunar eclipse series sets from 1908 to 1911 :
| 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 | 1908 Jun 14 | Penumbral | 1.1053 | 114 | 1908 Dec 07 | Penumbral | −1.0059 |
| 119 | 1909 Jun 04 | Total | 0.3755 | 124 | 1909 Nov 27 | Total | −0.2712 |
| 129 | 1910 May 24 | Total | −0.3975 | 134 | 1910 Nov 17 | Total | 0.4089 |
| 139 | 1911 May 13 | Penumbral | −1.1413 | 144 | 1911 Nov 06 | Penumbral | 1.1100 |

### Saros 129

This eclipse is a part of Saros series 129, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 10, 1351. It contains partial eclipses from September 26, 1531 through May 11, 1892; total eclipses from May 24, 1910 through September 8, 2090; and a second set of partial eclipses from September 20, 2108 through April 26, 2469. The series ends at member 71 as a penumbral eclipse on July 24, 2613.
The longest duration of totality was produced by member 37 at 106 minutes, 24 seconds on July 16, 2000. All eclipses in this series occur at the Moon’s descending node of orbit.
| Greatest | First | First | First | First |
| The greatest eclipse of the series occurred on 2000 Jul 16, lasting 106 minutes, 24 seconds. | Penumbral | Partial | Total | Central |
| The greatest eclipse of the series occurred on 2000 Jul 16, lasting 106 minutes, 24 seconds. | 1351 Jun 10 | 1531 Sep 26 | 1910 May 24 | 1946 Jun 14 |
| Last ||||
| The greatest eclipse of the series occurred on 2000 Jul 16, lasting 106 minutes, 24 seconds. | Central | Total | Partial | Penumbral |
| The greatest eclipse of the series occurred on 2000 Jul 16, lasting 106 minutes, 24 seconds. | 2036 Aug 07 | 2090 Sep 08 | 2469 Apr 26 | 2613 Jul 24 |
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 26–48 occur between 1801 and 2200: :
| 26 | 26 | 27 | 27 | 28 | 28 |
| 1802 Mar 19 | 1802 Mar 19 | 1820 Mar 29 | 1820 Mar 29 | 1838 Apr 10 | 1838 Apr 10 |
| 29 | 29 | 30 | 30 | 31 | 31 |
| 1856 Apr 20 | 1856 Apr 20 | 1874 May 01 | 1874 May 01 | 1892 May 11 | 1892 May 11 |
| 32 | 32 | 33 | 33 | 34 | 34 |
| 1910 May 24 | 1910 May 24 | 1928 Jun 03 | 1928 Jun 03 | 1946 Jun 14 | 1946 Jun 14 |
| 35 | 35 | 36 | 36 | 37 | 37 |
| 1964 Jun 25 | 1964 Jun 25 | 1982 Jul 06 | 1982 Jul 06 | 2000 Jul 16 | 2000 Jul 16 |
| 38 | 38 | 39 | 39 | 40 | 40 |
| 2018 Jul 27 | 2018 Jul 27 | 2036 Aug 07 | 2036 Aug 07 | 2054 Aug 18 | 2054 Aug 18 |
| 41 | 41 | 42 | 42 | 43 | 43 |
| 2072 Aug 28 | 2072 Aug 28 | 2090 Sep 08 | 2090 Sep 08 | 2108 Sep 20 | 2108 Sep 20 |
| 44 | 44 | 45 | 45 | 46 | 46 |
| 2126 Oct 01 | 2126 Oct 01 | 2144 Oct 11 | 2144 Oct 11 | 2162 Oct 23 | 2162 Oct 23 |
| 47 | 47 | 48 | 48 |
| 2180 Nov 02 | 2180 Nov 02 | 2198 Nov 13 | 2198 Nov 13 |

### 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 :
| 1801 Mar 30 (Saros 119) | 1801 Mar 30 (Saros 119) | 1812 Feb 27 (Saros 120) | 1812 Feb 27 (Saros 120) | 1823 Jan 26 (Saros 121) | 1823 Jan 26 (Saros 121) | 1833 Dec 26 (Saros 122) | 1833 Dec 26 (Saros 122) | 1844 Nov 24 (Saros 123) | 1844 Nov 24 (Saros 123) |
| 1855 Oct 25 (Saros 124) | 1855 Oct 25 (Saros 124) | 1866 Sep 24 (Saros 125) | 1866 Sep 24 (Saros 125) | 1877 Aug 23 (Saros 126) | 1877 Aug 23 (Saros 126) | 1888 Jul 23 (Saros 127) | 1888 Jul 23 (Saros 127) | 1899 Jun 23 (Saros 128) | 1899 Jun 23 (Saros 128) |
| 1910 May 24 (Saros 129) | 1910 May 24 (Saros 129) | 1921 Apr 22 (Saros 130) | 1921 Apr 22 (Saros 130) | 1932 Mar 22 (Saros 131) | 1932 Mar 22 (Saros 131) | 1943 Feb 20 (Saros 132) | 1943 Feb 20 (Saros 132) | 1954 Jan 19 (Saros 133) | 1954 Jan 19 (Saros 133) |
| 1964 Dec 19 (Saros 134) | 1964 Dec 19 (Saros 134) | 1975 Nov 18 (Saros 135) | 1975 Nov 18 (Saros 135) | 1986 Oct 17 (Saros 136) | 1986 Oct 17 (Saros 136) | 1997 Sep 16 (Saros 137) | 1997 Sep 16 (Saros 137) | 2008 Aug 16 (Saros 138) | 2008 Aug 16 (Saros 138) |
| 2019 Jul 16 (Saros 139) | 2019 Jul 16 (Saros 139) | 2030 Jun 15 (Saros 140) | 2030 Jun 15 (Saros 140) | 2041 May 16 (Saros 141) | 2041 May 16 (Saros 141) | 2052 Apr 14 (Saros 142) | 2052 Apr 14 (Saros 142) | 2063 Mar 14 (Saros 143) | 2063 Mar 14 (Saros 143) |
| 2074 Feb 11 (Saros 144) | 2074 Feb 11 (Saros 144) | 2085 Jan 10 (Saros 145) | 2085 Jan 10 (Saros 145) | 2095 Dec 11 (Saros 146) | 2095 Dec 11 (Saros 146) | 2106 Nov 11 (Saros 147) | 2106 Nov 11 (Saros 147) | 2117 Oct 10 (Saros 148) | 2117 Oct 10 (Saros 148) |
| 2128 Sep 09 (Saros 149) | 2128 Sep 09 (Saros 149) | 2139 Aug 10 (Saros 150) | 2139 Aug 10 (Saros 150) | 2150 Jul 09 (Saros 151) | 2150 Jul 09 (Saros 151) | 2161 Jun 08 (Saros 152) | 2161 Jun 08 (Saros 152) | 2172 May 08 (Saros 153) | 2172 May 08 (Saros 153) |
| | | 2194 Mar 07 (Saros 155) | 2194 Mar 07 (Saros 155) |

### 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 :
| 1823 Jul 23 (Saros 126) | 1823 Jul 23 (Saros 126) | 1852 Jul 01 (Saros 127) | 1852 Jul 01 (Saros 127) | 1881 Jun 12 (Saros 128) | 1881 Jun 12 (Saros 128) |
| 1910 May 24 (Saros 129) | 1910 May 24 (Saros 129) | 1939 May 03 (Saros 130) | 1939 May 03 (Saros 130) | 1968 Apr 13 (Saros 131) | 1968 Apr 13 (Saros 131) |
| 1997 Mar 24 (Saros 132) | 1997 Mar 24 (Saros 132) | 2026 Mar 03 (Saros 133) | 2026 Mar 03 (Saros 133) | 2055 Feb 11 (Saros 134) | 2055 Feb 11 (Saros 134) |
| 2084 Jan 22 (Saros 135) | 2084 Jan 22 (Saros 135) | 2113 Jan 02 (Saros 136) | 2113 Jan 02 (Saros 136) | 2141 Dec 13 (Saros 137) | 2141 Dec 13 (Saros 137) |
| 2170 Nov 23 (Saros 138) | 2170 Nov 23 (Saros 138) | 2199 Nov 02 (Saros 139) | 2199 Nov 02 (Saros 139) |

### 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 136.
| May 18, 1901 | May 29, 1919 |