| Total eclipse | |||||||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | April 26, 2051 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | 0.3371 | ||||||||||||||||
| Magnitude | 1.2034 | ||||||||||||||||
| Saros cycle | 132 (32 of 71) | ||||||||||||||||
| Totality | 69 minutes, 35 seconds | ||||||||||||||||
| Partiality | 220 minutes, 51 seconds | ||||||||||||||||
| Penumbral | 364 minutes, 48 seconds | ||||||||||||||||
| |||||||||||||||||
A totallunar eclipse will occur at the Moon’sascending node of orbit on Wednesday, April 26, 2051,[1] with an umbralmagnitude of 1.2034. 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 2.6 days afterapogee (on April 23, 2051, at 12:00 UTC), the Moon's apparent diameter will be smaller.[2]
This lunar eclipse is the third of atetrad, with four total lunar eclipses in series, the others being onMay 6, 2050;October 30, 2050; andOctober 19, 2051.
The eclipse will be completely visible overSouth America andwest Africa, seen rising overNorth America and the easternPacific Ocean and setting overcentral andeast Africa,Europe, andwest,central, andsouth Asia.[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 | 2.27848 |
| Umbral Magnitude | 1.20339 |
| Gamma | 0.33710 |
| Sun Right Ascension | 02h14m06.4s |
| Sun Declination | +13°27'39.8" |
| Sun Semi-Diameter | 15'53.9" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 14h14m24.0s |
| Moon Declination | -13°09'52.9" |
| Moon Semi-Diameter | 14'47.3" |
| Moon Equatorial Horizontal Parallax | 0°54'16.4" |
| ΔT | 85.9 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.
| April 11 Descending node (new moon) | April 26 Ascending node (full moon) |
|---|---|
 | |
| Partial solar eclipse Solar Saros 120 | Total lunar eclipse Lunar Saros 132 |
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 eclipse onJune 15, 2049 occurs in the previous lunar year eclipse set.
| Lunar eclipse series sets from 2049 to 2052 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing | Type Chart | Gamma | Saros | Date Viewing | Type Chart | Gamma | |
| 112 | 2049 May 17 | Penumbral | −1.1337 | 117 | 2049 Nov 09 | Penumbral | 1.1964 | |
| 122 | 2050 May 06 | Total | −0.4181 | 127 | 2050 Oct 30 | Total | 0.4435 | |
| 132 | 2051 Apr 26 | Total | 0.3371 | 137 | 2051 Oct 19 | Total | −0.2542 | |
| 142 | 2052 Apr 14 | Penumbral | 1.0628 | 147 | 2052 Oct 08 | Partial | −0.9726 | |
This eclipse is a part ofSaros series 132, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on May 12, 1492. It contains partial eclipses from August 16, 1636 throughMarch 24, 1997; total eclipses fromApril 4, 2015 through August 2, 2213; and a second set of partial eclipses from August 13, 2231 through November 30, 2411. The series ends at member 71 as a penumbral eclipse on June 26, 2754.
The longest duration of totality will be produced by member 36 at 106 minutes, 6 seconds onJune 9, 2123. All eclipses in this series occur at the Moon’sascending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
 The greatest eclipse of the series will occur on2123 Jun 09, lasting 106 minutes, 6 seconds.[7] | Penumbral | Partial | Total | Central |
1492 May 12 | 1636 Aug 16 | 2015 Apr 04 | 2069 May 06 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
2177 Jul 11 | 2213 Aug 02 | 2411 Nov 30 | 2754 Jun 26 | |
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 19–40 occur between 1801 and 2200: | |||||
|---|---|---|---|---|---|
| 19 | 20 | 21 | |||
| 1816 Dec 04 | 1834 Dec 16 | 1852 Dec 26 | |||
| 22 | 23 | 24 | |||
| 1871 Jan 06 | 1889 Jan 17 | 1907 Jan 29 | |||
 |  | ||||
| 25 | 26 | 27 | |||
| 1925 Feb 08 | 1943 Feb 20 | 1961 Mar 02 | |||
 |  |  |  |  |  |
| 28 | 29 | 30 | |||
| 1979 Mar 13 | 1997 Mar 24 | 2015 Apr 04 | |||
 |  |  |  | |  |
| 31 | 32 | 33 | |||
| 2033 Apr 14 | 2051 Apr 26 | 2069 May 06 | |||
 |  | | | |  |
| 34 | 35 | 36 | |||
| 2087 May 17 | 2105 May 28 | 2123 Jun 09 | |||
 |  | | |||
| 37 | 38 | 39 | |||
| 2141 Jun 19 | 2159 Jun 30 | 2177 Jul 11 | |||
| 40 | |||||
| 2195 Jul 22 | |||||
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1811 Mar 10 (Saros 110) | 1822 Feb 06 (Saros 111) | 1833 Jan 06 (Saros 112) | 1843 Dec 07 (Saros 113) | 1854 Nov 04 (Saros 114) | |||||
| 1865 Oct 04 (Saros 115) | 1876 Sep 03 (Saros 116) | 1887 Aug 03 (Saros 117) | 1898 Jul 03 (Saros 118) | 1909 Jun 04 (Saros 119) | |||||
 |  | ||||||||
| 1920 May 03 (Saros 120) | 1931 Apr 02 (Saros 121) | 1942 Mar 03 (Saros 122) | 1953 Jan 29 (Saros 123) | 1963 Dec 30 (Saros 124) | |||||
 |  |  |  |  |  |  |  |  |  |
| 1974 Nov 29 (Saros 125) | 1985 Oct 28 (Saros 126) | 1996 Sep 27 (Saros 127) | 2007 Aug 28 (Saros 128) | 2018 Jul 27 (Saros 129) | |||||
 |  |  |  |  |  |  |  |  |  |
| 2029 Jun 26 (Saros 130) | 2040 May 26 (Saros 131) | 2051 Apr 26 (Saros 132) | 2062 Mar 25 (Saros 133) | 2073 Feb 22 (Saros 134) | |||||
 |  |  |  | | | ||||
| 2084 Jan 22 (Saros 135) | 2094 Dec 21 (Saros 136) | 2105 Nov 21 (Saros 137) | 2116 Oct 21 (Saros 138) | 2127 Sep 20 (Saros 139) | |||||
 |  |  |  | ||||||
| 2138 Aug 20 (Saros 140) | 2149 Jul 20 (Saros 141) | 2160 Jun 18 (Saros 142) | 2171 May 19 (Saros 143) | 2182 Apr 18 (Saros 144) | |||||
| 2193 Mar 17 (Saros 145) | |||||||||
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 | |||||
|---|---|---|---|---|---|
| 1819 Oct 03 (Saros 124) | 1848 Sep 13 (Saros 125) | 1877 Aug 23 (Saros 126) | |||
| 1906 Aug 04 (Saros 127) | 1935 Jul 16 (Saros 128) | 1964 Jun 25 (Saros 129) | |||
 |  |  |  |  |  |
| 1993 Jun 04 (Saros 130) | 2022 May 16 (Saros 131) | 2051 Apr 26 (Saros 132) | |||
 |  |  |  | | |
| 2080 Apr 04 (Saros 133) | 2109 Mar 17 (Saros 134) | 2138 Feb 24 (Saros 135) | |||
 |  | ||||
| 2167 Feb 04 (Saros 136) | 2196 Jan 15 (Saros 137) | ||||
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 139.
| April 20, 2042 | April 30, 2060 |
|---|---|
 |  |
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