| Total eclipse | |||||||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | September 19, 2043 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.3316 | ||||||||||||||||
| Magnitude | 1.2575 | ||||||||||||||||
| Saros cycle | 128 (42 of 71) | ||||||||||||||||
| Totality | 71 minutes, 44 seconds | ||||||||||||||||
| Partiality | 206 minutes, 2 seconds | ||||||||||||||||
| Penumbral | 325 minutes, 45 seconds | ||||||||||||||||
| |||||||||||||||||
A totallunar eclipse will occur at the Moon’sascending node of orbit on Saturday, September 19, 2043,[1] with an umbralmagnitude of 1.2575. 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 2.8 days beforeperigee (on September 21, 2043, at 20:20 UTC), the Moon's apparent diameter will be larger.[2]
This lunar eclipse is the second of atetrad, with four total lunar eclipses in series, the others being onMarch 25, 2043;March 13, 2044; andSeptember 7, 2044.
The eclipse will be completely visible overSouth America,western Europe, andwest Africa, seen rising overNorth America and setting overeast Africa,eastern Europe, andwest,central, andsouth Asia.[3]
 |
Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 2.24520 |
| Umbral Magnitude | 1.25751 |
| Gamma | −0.33164 |
| Sun Right Ascension | 11h45m28.0s |
| Sun Declination | +01°34'24.4" |
| Sun Semi-Diameter | 15'55.1" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 23h46m06.1s |
| Moon Declination | -01°51'33.2" |
| Moon Semi-Diameter | 16'07.0" |
| Moon Equatorial Horizontal Parallax | 0°59'08.8" |
| ΔT | 81.2 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.
| September 19 Ascending node (full moon) | October 3 Descending node (new moon) |
|---|---|
|  |
| Total lunar eclipse Lunar Saros 128 | Annular solar eclipse Solar Saros 154 |
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 onOctober 28, 2042 occurs in the previous lunar year eclipse set.
| Lunar eclipse series sets from 2042 to 2045 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||||
| Saros | Date Viewing | Type Chart | Gamma | Saros | Date Viewing | Type Chart | Gamma | |
| 113 | 2042 Apr 05 | Penumbral | 1.1080 | 118 | 2042 Sep 29 | Penumbral | −1.0261 | |
| 123 | 2043 Mar 25 | Total | 0.3849 | 128 | 2043 Sep 19 | Total | −0.3316 | |
| 133 | 2044 Mar 13 | Total | −0.3496 | 138 | 2044 Sep 07 | Total | 0.4318 | |
| 143 | 2045 Mar 03 | Penumbral | −1.0274 | 148 | 2045 Aug 27 | Penumbral | 1.2060 | |
This eclipse is a part ofSaros series 128, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 18, 1304. It contains partial eclipses from September 2, 1430 through May 11, 1827; total eclipses from May 21, 1845 through October 21, 2097; and a second set of partial eclipses from November 2, 2115 through May 17, 2440. The series ends at member 71 as a penumbral eclipse on August 2, 2566.
The longest duration of totality was produced by member 37 at 100 minutes, 43 seconds onJuly 26, 1953. All eclipses in this series occur at the Moon’sascending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
 The greatest eclipse of the series occurred on1953 Jul 26, lasting 100 minutes, 43 seconds.[7] | Penumbral | Partial | Total | Central |
| 1304 Jun 18 | 1430 Sep 02 | 1845 May 21 | 1899 Jun 23 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
2007 Aug 28 | 2097 Oct 21 | 2440 May 17 | 2566 Aug 02 | |
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 29–50 occur between 1801 and 2200: | |||||
|---|---|---|---|---|---|
| 29 | 30 | 31 | |||
| 1809 Apr 30 | 1827 May 11 | 1845 May 21 | |||
| 32 | 33 | 34 | |||
| 1863 Jun 01 | 1881 Jun 12 | 1899 Jun 23 | |||
| 35 | 36 | 37 | |||
| 1917 Jul 04 | 1935 Jul 16 | 1953 Jul 26 | |||
 |  |  |  | |  |
| 38 | 39 | 40 | |||
| 1971 Aug 06 | 1989 Aug 17 | 2007 Aug 28 | |||
 |  |  |  | |  |
| 41 | 42 | 43 | |||
| 2025 Sep 07 | 2043 Sep 19 | 2061 Sep 29 | |||
 |  | | |  |  |
| 44 | 45 | 46 | |||
| 2079 Oct 10 | 2097 Oct 21 | 2115 Nov 02 | |||
 |  | |  | ||
| 47 | 48 | 49 | |||
| 2133 Nov 12 | 2151 Nov 24 | 2169 Dec 04 | |||
| 50 | |||||
| 2187 Dec 15 | |||||
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1803 Aug 03 (Saros 106) | 1814 Jul 02 (Saros 107) | 1825 Jun 01 (Saros 108) | 1836 May 01 (Saros 109) | 1847 Mar 31 (Saros 110) | |||||
| 1858 Feb 27 (Saros 111) | 1869 Jan 28 (Saros 112) | 1879 Dec 28 (Saros 113) | 1890 Nov 26 (Saros 114) | 1901 Oct 27 (Saros 115) | |||||
 |  | ||||||||
| 1912 Sep 26 (Saros 116) | 1923 Aug 26 (Saros 117) | 1934 Jul 26 (Saros 118) | 1945 Jun 25 (Saros 119) | 1956 May 24 (Saros 120) | |||||
 |  |  |  |  |  |  |  |  |  |
| 1967 Apr 24 (Saros 121) | 1978 Mar 24 (Saros 122) | 1989 Feb 20 (Saros 123) | 2000 Jan 21 (Saros 124) | 2010 Dec 21 (Saros 125) | |||||
 |  |  |  |  |  |  |  |  |  |
| 2021 Nov 19 (Saros 126) | 2032 Oct 18 (Saros 127) | 2043 Sep 19 (Saros 128) | 2054 Aug 18 (Saros 129) | 2065 Jul 17 (Saros 130) | |||||
 |  |  |  | | |  |  |  |  |
| 2076 Jun 17 (Saros 131) | 2087 May 17 (Saros 132) | 2098 Apr 15 (Saros 133) | 2109 Mar 17 (Saros 134) | 2120 Feb 14 (Saros 135) | |||||
 |  |  |  |  |  | ||||
| 2131 Jan 13 (Saros 136) | 2141 Dec 13 (Saros 137) | 2152 Nov 12 (Saros 138) | 2163 Oct 12 (Saros 139) | 2174 Sep 11 (Saros 140) | |||||
| 2185 Aug 11 (Saros 141) | 2196 Jul 10 (Saros 142) | ||||||||
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 | |||||
|---|---|---|---|---|---|
| 1812 Feb 27 (Saros 120) | 1841 Feb 06 (Saros 121) | 1870 Jan 17 (Saros 122) | |||
| 1898 Dec 27 (Saros 123) | 1927 Dec 08 (Saros 124) | 1956 Nov 18 (Saros 125) | |||
 |  |  |  | ||
| 1985 Oct 28 (Saros 126) | 2014 Oct 08 (Saros 127) | 2043 Sep 19 (Saros 128) | |||
 |  |  |  | | |
| 2072 Aug 28 (Saros 129) | 2101 Aug 09 (Saros 130) | 2130 Jul 21 (Saros 131) | |||
 |  | ||||
| 2159 Jun 30 (Saros 132) | 2188 Jun 09 (Saros 133) | ||||
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 annular solar eclipses ofSolar Saros 135.
| September 12, 2034 | September 22, 2052 |
|---|---|
 |  |
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