| Total eclipse | |||||||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | May 24, 1910 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.3976 | ||||||||||||||||
| Magnitude | 1.0950 | ||||||||||||||||
| Saros cycle | 129 (32 of 71) | ||||||||||||||||
| Totality | 49 minutes, 30 seconds | ||||||||||||||||
| Partiality | 215 minutes, 21 seconds | ||||||||||||||||
| Penumbral | 360 minutes, 20 seconds | ||||||||||||||||
| |||||||||||||||||
← November 1909 November 1910 → | |||||||||||||||||
A totallunar eclipse occurred at the Moon’sdescending node of orbit on Tuesday, May 24, 1910,[1] with an umbralmagnitude of 1.0950. A lunar eclipse occurs when theMoon moves into theEarth'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 asolar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on thenight 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'sshadow is smaller. Occurring about 2.4 days afterapogee (on May 21, 1910, at 18:30 UTC), the Moon's apparent diameter was smaller.[2]
This lunar eclipse was the third of atetrad, with four total lunar eclipses in series, the others being onJune 4, 1909;November 27, 1909; andNovember 17, 1910.
The eclipse was completely visible over much ofNorth America,South America, andAntarctica, seen rising over northwestern North America, easternAustralia, and the centralPacific Ocean and setting overAfrica andEurope.[3]
 |
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| 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 |
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.
| May 9 Ascending node (new moon) | May 24 Descending node (full moon) |
|---|---|
 | |
| Total solar eclipse Solar Saros 117 | Total lunar eclipse Lunar Saros 129 |
This eclipse is a member of asemester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternatingnodes of the Moon's orbit.[5]
The penumbral lunar eclipses onJanuary 18, 1908 andJuly 13, 1908 occur in the previous lunar year eclipse set.
| Lunar eclipse series sets from 1908 to 1911 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Descending 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 | |
This eclipse is a part ofSaros 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 fromMay 24, 1910 throughSeptember 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 onJuly 16, 2000. All eclipses in this series occur at the Moon’sdescending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
 The greatest eclipse of the series occurred on2000 Jul 16, lasting 106 minutes, 24 seconds.[7] | Penumbral | Partial | Total | Central |
| 1351 Jun 10 | 1531 Sep 26 | 1910 May 24 | 1946 Jun 14 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
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 oneexeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
| Series members 26–48 occur between 1801 and 2200: | |||||
|---|---|---|---|---|---|
| 26 | 27 | 28 | |||
| 1802 Mar 19 | 1820 Mar 29 | 1838 Apr 10 | |||
| 29 | 30 | 31 | |||
| 1856 Apr 20 | 1874 May 01 | 1892 May 11 | |||
| 32 | 33 | 34 | |||
| 1910 May 24 | 1928 Jun 03 | 1946 Jun 14 | |||
| |  |  | |  |
| 35 | 36 | 37 | |||
| 1964 Jun 25 | 1982 Jul 06 | 2000 Jul 16 | |||
 |  |  |  | |  |
| 38 | 39 | 40 | |||
| 2018 Jul 27 | 2036 Aug 07 | 2054 Aug 18 | |||
 |  | |  |  |  |
| 41 | 42 | 43 | |||
| 2072 Aug 28 | 2090 Sep 08 | 2108 Sep 20 | |||
 |  | |  | ||
| 44 | 45 | 46 | |||
| 2126 Oct 01 | 2144 Oct 11 | 2162 Oct 23 | |||
| 47 | 48 | ||||
| 2180 Nov 02 | 2198 Nov 13 | ||||
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1801 Mar 30 (Saros 119) | 1812 Feb 27 (Saros 120) | 1823 Jan 26 (Saros 121) | 1833 Dec 26 (Saros 122) | 1844 Nov 24 (Saros 123) | |||||
| 1855 Oct 25 (Saros 124) | 1866 Sep 24 (Saros 125) | 1877 Aug 23 (Saros 126) | 1888 Jul 23 (Saros 127) | 1899 Jun 23 (Saros 128) | |||||
| 1910 May 24 (Saros 129) | 1921 Apr 22 (Saros 130) | 1932 Mar 22 (Saros 131) | 1943 Feb 20 (Saros 132) | 1954 Jan 19 (Saros 133) | |||||
| |  |  |  |  |  |  |  |  |
| 1964 Dec 19 (Saros 134) | 1975 Nov 18 (Saros 135) | 1986 Oct 17 (Saros 136) | 1997 Sep 16 (Saros 137) | 2008 Aug 16 (Saros 138) | |||||
 |  |  |  |  |  |  |  |  |  |
| 2019 Jul 16 (Saros 139) | 2030 Jun 15 (Saros 140) | 2041 May 16 (Saros 141) | 2052 Apr 14 (Saros 142) | 2063 Mar 14 (Saros 143) | |||||
 |  |  |  |  |  |  |  | ||
| 2074 Feb 11 (Saros 144) | 2085 Jan 10 (Saros 145) | 2095 Dec 11 (Saros 146) | 2106 Nov 11 (Saros 147) | 2117 Oct 10 (Saros 148) | |||||
| 2128 Sep 09 (Saros 149) | 2139 Aug 10 (Saros 150) | 2150 Jul 09 (Saros 151) | 2161 Jun 08 (Saros 152) | 2172 May 08 (Saros 153) | |||||
| 2194 Mar 07 (Saros 155) | |||||||||
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 | |||||
|---|---|---|---|---|---|
| 1823 Jul 23 (Saros 126) | 1852 Jul 01 (Saros 127) | 1881 Jun 12 (Saros 128) | |||
| 1910 May 24 (Saros 129) | 1939 May 03 (Saros 130) | 1968 Apr 13 (Saros 131) | |||
| |  |  |  |  |
| 1997 Mar 24 (Saros 132) | 2026 Mar 03 (Saros 133) | 2055 Feb 11 (Saros 134) | |||
 |  |  |  |  |  |
| 2084 Jan 22 (Saros 135) | 2113 Jan 02 (Saros 136) | 2141 Dec 13 (Saros 137) | |||
 |  | ||||
| 2170 Nov 23 (Saros 138) | 2199 Nov 02 (Saros 139) | ||||
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (ahalf saros).[8] This lunar eclipse is related to two total solar eclipses ofSolar Saros 136.
| May 18, 1901 | May 29, 1919 |
|---|---|
 |  |
_(cropped).jpg)
