A total solar eclipse will occur at the Moon's descending node of orbit on Saturday, September 4, 2100, with a magnitude of 1.0402. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Occurring about 2.5 days before perigee (on September 6, 2100, at 20:30 UTC), the Moon's apparent diameter will be larger. This will be the last solar eclipse of the 21st century. The path of totality will be visible from parts of Sierra Leone, Guinea, Côte d'Ivoire, Ghana, Togo, Benin, Nigeria, Cameroon, the Central African Republic, the Democratic Republic of the Congo, Rwanda, southwestern Uganda, Burundi, Tanzania, Mozambique, and Madagascar. A partial solar eclipse will also be visible for parts of Africa, Southern Europe, the Middle East, and Antarctica.
Eclipse details Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the Moon's penumbra or umbra attains the specific parameter, and the second table describes various other 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 2100 A penumbral lunar eclipse on February 24. An annular solar eclipse on March 10. A penumbral lunar eclipse on August 19. A total solar eclipse on September 4.
Metonic Preceded by: Solar eclipse of November 15, 2096 Followed by: Solar eclipse of June 22, 2104
Tzolkinex Preceded by: Solar eclipse of July 23, 2093 Followed by: Solar eclipse of October 16, 2107
Half-Saros Preceded by: Lunar eclipse of August 29, 2091 Followed by: Lunar eclipse of September 9, 2109
Tritos Preceded by: Solar eclipse of October 4, 2089 Followed by: Solar eclipse of August 4, 2111
Solar Saros 146 Preceded by: Solar eclipse of August 24, 2082 Followed by: Solar eclipse of September 15, 2118
Inex Preceded by: Solar eclipse of September 23, 2071 Followed by: Solar eclipse of August 15, 2129
Triad Preceded by: Solar eclipse of November 3, 2013 Followed by: Solar eclipse of July 6, 2187
Solar eclipses of 2098–2101 This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit. The partial solar eclipse on October 24, 2098 occurs in the previous lunar year eclipse set.
Saros 146 This eclipse is a part of Saros series 146, repeating every 18 years, 11 days, and containing 76 events. The series started with a partial solar eclipse on September 19, 1541. It contains total eclipses from May 29, 1938 through October 7, 2154; hybrid eclipses from October 17, 2172 through November 20, 2226; and annular eclipses from November 30, 2244 through August 10, 2659. The series ends at member 76 as a partial eclipse on December 29, 2893. Its 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. The longest duration of totality was produced by member 26 at 5 minutes, 21 seconds on June 30, 1992, and the longest duration of annularity will be produced by member 63 at 3 minutes, 30 seconds on August 10, 2659. All eclipses in this series occur at the Moon’s descending node of orbit.
Metonic series The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's descending node.
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.
Notes
References Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC Google interactive map Besselian elements