Solar eclipse of August 11, 2018
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A partial solar eclipse occurred at the Moon's ascending node of orbit on Saturday, August 11, 2018,[1][2][3] with a magnitude of 0.7368. 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 partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.
The eclipse was visible in northeastern Canada, Greenland, Northern Europe, and northern Asia.
Visibility
The maximal phase of the partial eclipse was recorded in the East Siberian Sea, near Wrangel Island.
The eclipse was observed in Canada, Greenland, Scotland, most of the Nordic countries (Iceland, Norway, Sweden, Finland), Estonia, Latvia, practically throughout Russia (except for places southwest of the line roughly passing through Pskov, Moscow and Penza, and the most eastern places of the Far East), in Kazakhstan, Kyrgyzstan, Mongolia and China. During sunset, the eclipse was observed in North and South Korea.
Gallery
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Moscow, Russia, 9:40 UTC
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Baley, Russia, 10:24 UTC
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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.[4]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 2018 August 11 at 08:03:16.2 UTC |
| Equatorial Conjunction | 2018 August 11 at 09:21:12.9 UTC |
| Greatest Eclipse | 2018 August 11 at 09:47:28.0 UTC |
| Ecliptic Conjunction | 2018 August 11 at 09:58:53.5 UTC |
| Last Penumbral External Contact | 2018 August 11 at 11:31:53.5 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.73677 |
| Eclipse Obscuration | 0.67963 |
| Gamma | 1.14758 |
| Sun Right Ascension | 09h24m28.1s |
| Sun Declination | +15°13'19.1" |
| Sun Semi-Diameter | 15'46.8" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 09h25m31.3s |
| Moon Declination | +16°21'40.4" |
| Moon Semi-Diameter | 16'40.0" |
| Moon Equatorial Horizontal Parallax | 1°01'10.1" |
| ΔT | 69.2 s |
Eclipse season
Script error: No such module "Labelled list hatnote". 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. The first and last eclipse in this sequence is separated by one synodic month.
| July 13 Ascending node (new moon) |
July 27 Descending node (full moon) |
August 11 Ascending node (new moon) |
|---|---|---|
| File:SE2018Jul13P.png | File:Lunar eclipse chart close-2018Jul27.png | File:SE2018Aug11P.png |
| Partial solar eclipse Solar Saros 117 |
Total lunar eclipse Lunar Saros 129 |
Partial solar eclipse Solar Saros 155 |
Related eclipses
Eclipses in 2018
- A total lunar eclipse on January 31.
- A partial solar eclipse on February 15.
- A partial solar eclipse on July 13.
- A total lunar eclipse on July 27.
- A partial solar eclipse on August 11.
Metonic
- Preceded by: Solar eclipse of October 23, 2014
Tzolkinex
- Preceded by: Solar eclipse of July 1, 2011
- Followed by: Solar eclipse of September 21, 2025
Half-Saros
- Preceded by: Lunar eclipse of August 6, 2009
- Followed by: Lunar eclipse of August 17, 2027
Tritos
- Preceded by: Solar eclipse of September 11, 2007
- Followed by: Solar eclipse of July 11, 2029
Solar Saros 155
- Preceded by: Solar eclipse of July 31, 2000
- Followed by: Solar eclipse of August 21, 2036
Inex
- Preceded by: Solar eclipse of August 31, 1989
- Followed by: Solar eclipse of July 22, 2047
Triad
- Preceded by: Solar eclipse of October 11, 1931
- Followed by: Solar eclipse of June 12, 2105
Solar eclipses of 2015–2018
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.[5]
The partial solar eclipse on July 13, 2018 occurs in the next lunar year eclipse set.
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Saros 155
Template:Solar Saros series 155
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 ascending node.
Tritos series
Template:Solar Tritos series 2007 September 11
Inex series
Template:Solar Inex series 2018 August 11
External links
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- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
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References
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