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September 2090 lunar eclipse
Astronomical event From Wikipedia, the free encyclopedia
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A total lunar eclipse will occur at the Moon’s descending node of orbit on Friday, September 8, 2090,[1] with an umbral magnitude of 1.0387. 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 only about 12 hours before apogee (on September 9, 2090, at 11:00 UTC), the Moon's apparent diameter will be smaller.[2]
This lunar eclipse will be the second of a tetrad, with four total lunar eclipses in series, the others being on March 15, 2090; March 5, 2091; and August 29, 2091.
This will the final total lunar eclipse of Lunar Saros 129.
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Visibility
The eclipse will be completely visible over Africa, Europe, and the Middle East, seen rising over North and South America and setting over central, south Asia, and east Asia and Australia.[3]
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Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
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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
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Eclipses in 2090
- A total lunar eclipse on March 15.
- A partial solar eclipse on March 31.
- A total lunar eclipse on September 8.
- A total solar eclipse on September 23.
Metonic
- Preceded by: Lunar eclipse of November 20, 2086
- Followed by: Lunar eclipse of June 28, 2094
Tzolkinex
- Preceded by: Lunar eclipse of July 29, 2083
- Followed by: Lunar eclipse of October 21, 2097
Half-Saros
- Preceded by: Solar eclipse of September 3, 2081
- Followed by: Solar eclipse of September 14, 2099
Tritos
- Preceded by: Lunar eclipse of October 10, 2079
- Followed by: Lunar eclipse of August 9, 2101
Lunar Saros 129
- Preceded by: Lunar eclipse of August 28, 2072
- Followed by: Lunar eclipse of September 20, 2108
Inex
- Preceded by: Lunar eclipse of September 29, 2061
- Followed by: Lunar eclipse of August 20, 2119
Triad
- Preceded by: Lunar eclipse of November 9, 2003
- Followed by: Lunar eclipse of July 11, 2177
Lunar eclipses of 2089–2092
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.[5]
The penumbral lunar eclipse on July 19, 2092 occurs in the next lunar year eclipse set.
Saros 129
This eclipse is a part of Saros series 129, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 10, 1351. It contains partial eclipses from September 26, 1531 through May 11, 1892; total eclipses from May 24, 1910 through September 8, 2090; and a second set of partial eclipses from September 20, 2108 through April 26, 2469. The series ends at member 71 as a penumbral eclipse on July 24, 2613.
The longest duration of totality was produced by member 37 at 106 minutes, 24 seconds on July 16, 2000. All eclipses in this series occur at the Moon’s descending node of orbit.[6]
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).[8] This lunar eclipse is related to two total solar eclipses of Solar Saros 136.
| September 3, 2081 | September 14, 2099 |
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See also
Notes
External links
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