A total lunar eclipse will occur at the Moon’s ascending node of orbit on Saturday, September 19, 2043, with an umbral magnitude of 1.2575. 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 2.8 days before perigee (on September 21, 2043, at 20:20 UTC), the Moon's apparent diameter will be larger. This lunar eclipse is the second of a tetrad, with four total lunar eclipses in series, the others being on March 25, 2043; March 13, 2044; and September 7, 2044.
Visibility The eclipse will be completely visible over South America, western Europe, and west Africa, seen rising over North America and setting over east Africa, eastern Europe, and west, central, and south Asia.
Eclipse details Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.
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.
Related eclipses
Eclipses in 2043 A total lunar eclipse on March 25. A non-central total solar eclipse on April 9. A total lunar eclipse on September 19. A non-central annular solar eclipse on October 3.
Metonic Preceded by: Lunar eclipse of November 30, 2039 Followed by: Lunar eclipse of July 7, 2047
Tzolkinex Preceded by: Lunar eclipse of August 7, 2036 Followed by: Lunar eclipse of October 30, 2050
Half-Saros Preceded by: Solar eclipse of September 12, 2034 Followed by: Solar eclipse of September 22, 2052
Tritos Preceded by: Lunar eclipse of October 18, 2032 Followed by: Lunar eclipse of August 18, 2054
Lunar Saros 128 Preceded by: Lunar eclipse of September 7, 2025 Followed by: Lunar eclipse of September 29, 2061
Inex Preceded by: Lunar eclipse of October 8, 2014 Followed by: Lunar eclipse of August 28, 2072
Triad Preceded by: Lunar eclipse of November 18, 1956 Followed by: Lunar eclipse of July 21, 2130
Lunar eclipses of 2042–2045 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 eclipse on October 28, 2042 occurs in the previous lunar year eclipse set.
Saros 128 This eclipse is a part of Saros 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 on July 26, 1953. All eclipses in this series occur at the Moon’s ascending node of orbit.
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.
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.
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.
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 annular solar eclipses of Solar Saros 135.
See also List of lunar eclipses and List of 21st-century lunar eclipses
Notes
External links 2043 Sep 19 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC