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Future annular solar eclipse From Wikipedia, the free encyclopedia
An annular solar eclipse will occur at the Moon's descending node of orbit on Saturday, October 3, 2043,[1] with a magnitude of 0.9497. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 4.8 days before apogee (on October 7, 2043, at 23:20 UTC), the Moon's apparent diameter will be smaller.[2]
It will be unusual in that while it is an annular solar eclipse, it is not a central solar eclipse. A non-central eclipse is one where the center-line of annularity does not intersect the surface of the Earth (when the gamma is between 0.9972 and 1.0260). Instead, the center line passes just above the Earth's surface. This rare type occurs when annularity is only visible at sunset or sunrise in a polar region.
While the path of annularity will be not visible from any land areas, a partial solar eclipse will be visible for parts of Madagascar, Antarctica, and southwestern Australia. This will be the first of 56 umbral eclipses in Solar Saros 154.
Animated path
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.[3]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 2043 October 03 at 00:44:16.8 UTC |
| First Umbral External Contact | 2043 October 03 at 02:51:37.4 UTC |
| Greatest Eclipse | 2043 October 03 at 03:01:48.9 UTC |
| Last Umbral External Contact | 2043 October 03 at 03:11:24.2 UTC |
| Ecliptic Conjunction | 2043 October 03 at 03:13:23.8 UTC |
| Equatorial Conjunction | 2043 October 03 at 04:05:54.0 UTC |
| Last Penumbral External Contact | 2043 October 03 at 05:19:01.1 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.94968 |
| Eclipse Obscuration | - |
| Gamma | −1.01019 |
| Sun Right Ascension | 12h36m02.9s |
| Sun Declination | -03°53'04.6" |
| Sun Semi-Diameter | 15'58.8" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 12h34m15.0s |
| Moon Declination | -04°41'56.9" |
| Moon Semi-Diameter | 15'05.1" |
| Moon Equatorial Horizontal Parallax | 0°55'21.7" |
| ΔT | 80.5 s |
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.
| 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 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.[4]
| Solar eclipse series sets from 2040 to 2043 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 119 | May 11, 2040 Partial |
−1.2529 | 124 | November 4, 2040 Partial |
1.0993 | |
| 129 | April 30, 2041 Total |
−0.4492 | 134 | October 25, 2041 Annular |
0.4133 | |
| 139 | April 20, 2042 Total |
0.2956 | 144 | October 14, 2042 Annular |
−0.303 | |
| 149 | April 9, 2043 Total (non-central) |
1.0031 | 154 | October 3, 2043 Annular (non-central) |
1.0102 | |
This eclipse is a part of Saros series 154, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on July 19, 1917. It contains annular eclipses from October 3, 2043 through March 27, 2332; hybrid eclipses from April 7, 2350 through April 29, 2386; and total eclipses from May 9, 2404 through May 29, 3035. The series ends at member 71 as a partial eclipse on August 25, 3179. 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 annularity will be produced by member 9 at 3 minutes, 41 seconds on October 13, 2061, and the longest duration of totality will be produced by member 35 at 4 minutes, 50 seconds on July 25, 2530. All eclipses in this series occur at the Moon’s descending node of orbit.[5]
| Series members 1–16 occur between 1917 and 2200: | ||
|---|---|---|
| 1 | 2 | 3 |
 July 19, 1917 |
 July 30, 1935 |
 August 9, 1953 |
| 4 | 5 | 6 |
 August 20, 1971 |
 August 31, 1989 |
 September 11, 2007 |
| 7 | 8 | 9 |
 September 21, 2025 |
October 3, 2043 |
 October 13, 2061 |
| 10 | 11 | 12 |
 October 24, 2079 |
 November 4, 2097 |
 November 16, 2115 |
| 13 | 14 | 15 |
 November 26, 2133 |
 December 8, 2151 |
 December 18, 2169 |
| 16 | ||
 December 29, 2187 | ||
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.
| 21 eclipse events between July 22, 1971 and July 22, 2047 | ||||
|---|---|---|---|---|
| July 22 | May 9–11 | February 26–27 | December 14–15 | October 2–3 |
| 116 | 118 | 120 | 122 | 124 |
 July 22, 1971 |
 May 11, 1975 |
 February 26, 1979 |
 December 15, 1982 |
 October 3, 1986 |
| 126 | 128 | 130 | 132 | 134 |
 July 22, 1990 |
 May 10, 1994 |
 February 26, 1998 |
 December 14, 2001 |
 October 3, 2005 |
| 136 | 138 | 140 | 142 | 144 |
 July 22, 2009 |
 May 10, 2013 |
 February 26, 2017 |
 December 14, 2020 |
 October 2, 2024 |
| 146 | 148 | 150 | 152 | 154 |
 July 22, 2028 |
 May 9, 2032 |
 February 27, 2036 |
 December 15, 2039 |
October 3, 2043 |
| 156 | ||||
 July 22, 2047 | ||||
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.
| Series members between 1801 and 2087 | ||||
|---|---|---|---|---|
 August 17, 1803 (Saros 132) |
 July 17, 1814 (Saros 133) |
 June 16, 1825 (Saros 134) |
 May 15, 1836 (Saros 135) |
 April 15, 1847 (Saros 136) |
 March 15, 1858 (Saros 137) |
 February 11, 1869 (Saros 138) |
 January 11, 1880 (Saros 139) |
 December 12, 1890 (Saros 140) |
 November 11, 1901 (Saros 141) |
 October 10, 1912 (Saros 142) |
 September 10, 1923 (Saros 143) |
 August 10, 1934 (Saros 144) |
 July 9, 1945 (Saros 145) |
 June 8, 1956 (Saros 146) |
 May 9, 1967 (Saros 147) |
 April 7, 1978 (Saros 148) |
 March 7, 1989 (Saros 149) |
 February 5, 2000 (Saros 150) |
 January 4, 2011 (Saros 151) |
 December 4, 2021 (Saros 152) |
 November 3, 2032 (Saros 153) |
October 3, 2043 (Saros 154) |
 September 2, 2054 (Saros 155) |
 August 2, 2065 (Saros 156) |
 July 1, 2076 (Saros 157) |
 June 1, 2087 (Saros 158) | |||
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.
| Series members between 1801 and 2200 | ||
|---|---|---|
 March 13, 1812 (Saros 146) |
 February 21, 1841 (Saros 147) |
 January 31, 1870 (Saros 148) |
 January 11, 1899 (Saros 149) |
 December 24, 1927 (Saros 150) |
 December 2, 1956 (Saros 151) |
 November 12, 1985 (Saros 152) |
 October 23, 2014 (Saros 153) |
October 3, 2043 (Saros 154) |
 September 12, 2072 (Saros 155) |
 August 24, 2101 (Saros 156) |
 August 4, 2130 (Saros 157) |
 July 15, 2159 (Saros 158) |
 June 24, 2188 (Saros 159) |
|
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