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December 2029 lunar eclipse
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A total lunar eclipse will occur at the Moon’s descending node of orbit on Thursday, December 20, 2029,[1] with an umbral magnitude of 1.1190. 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 4.6 days before apogee (on Sunday, December 16, 2029, at 9:00 UTC), the Moon's apparent diameter will be smaller.[2]
During the eclipse, NGC 2129 will be occulted by the Moon over the South America, the Atlantic Ocean and Africa. Deep-sky objects are rarely occulted during a total eclipse from any given spot on Earth.[3]: 161
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Visibility
The eclipse will be completely visible over northern North America, Africa, Europe, and north, west, and central Asia, seen rising over North and South America and setting over east Asia and Australia.[4]
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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.[5]
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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 2029
- A partial solar eclipse on January 14.
- A partial solar eclipse on June 12.
- A total lunar eclipse on June 26.
- A partial solar eclipse on July 11.
- A partial solar eclipse on December 5.
- A total lunar eclipse on December 20.
Metonic
- Preceded by: Lunar eclipse of March 3, 2026
- Followed by: Lunar eclipse of October 8, 2033
Tzolkinex
- Preceded by: Lunar eclipse of November 8, 2022
- Followed by: Lunar eclipse of January 31, 2037
Half-Saros
- Preceded by: Solar eclipse of December 14, 2020
- Followed by: Solar eclipse of December 26, 2038
Tritos
- Preceded by: Lunar eclipse of January 21, 2019
- Followed by: Lunar eclipse of November 18, 2040
Lunar Saros 135
- Preceded by: Lunar eclipse of December 10, 2011
- Followed by: Lunar eclipse of January 1, 2048
Inex
- Preceded by: Lunar eclipse of January 9, 2001
- Followed by: Lunar eclipse of November 30, 2058
Triad
- Preceded by: Lunar eclipse of February 20, 1943
- Followed by: Lunar eclipse of October 21, 2116
Lunar eclipses of 2027–2031
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.[6]
The penumbral lunar eclipses on February 20, 2027 and August 17, 2027 occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on May 7, 2031 and October 30, 2031 occur in the next lunar year eclipse set.
Metonic series
The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will be in nearly the same location relative to the background stars.
Saros 135
This eclipse is a part of Saros series 135, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on April 13, 1615. It contains partial eclipses from July 20, 1777 through October 28, 1939; total eclipses from November 7, 1957 through July 6, 2354; and a second set of partial eclipses from July 16, 2372 through September 19, 2480. The series ends at member 71 as a penumbral eclipse on May 18, 2877.
The longest duration of totality will be produced by member 37 at 106 minutes, 13 seconds on May 12, 2264. All eclipses in this series occur at the Moon’s descending node of orbit.[7]
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).[9] This lunar eclipse is related to two total solar eclipses of Solar Saros 142.
| December 14, 2020 | December 26, 2038 |
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See also
Notes
External links
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