Wikipedia

Solar eclipse of August 15, 2091

A total solar eclipse will occur at the Moon's ascending node of orbit between Tuesday, August 14 and Wednesday, August 15, 2091,[1] with a magnitude of 1.0216. 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 3.3 days before perigee (on August 18, 2091, at 7:15 UTC), the Moon's apparent diameter will be larger.[2]

Solar eclipse of August 15, 2091
Map
Type of eclipse
NatureTotal
Gamma−0.949
Magnitude1.0216
Maximum eclipse
Duration98 s (1 min 38 s)
Coordinates55°36′S 150°30′E / 55.6°S 150.5°E / -55.6; 150.5
Max. width of band236 km (147 mi)
Times (UTC)
Greatest eclipse0:34:43
References
Saros127 (62 of 82)
Catalog # (SE5000)9713

While the path of totality will not be visible from any landmasses, a partial solar eclipse will be visible for parts of Australia, Oceania, and Antarctica. This will be the last of 42 umbral eclipses of Solar Saros 127.

Eclipse details

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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]

August 15, 2091 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 2091 August 14 at 22:24:15.1 UTC
First Umbral External Contact 2091 August 15 at 00:00:09.8 UTC
First Central Line 2091 August 15 at 00:01:38.3 UTC
First Umbral Internal Contact 2091 August 15 at 00:03:10.7 UTC
Ecliptic Conjunction 2091 August 15 at 00:24:41.8 UTC
Greatest Eclipse 2091 August 15 at 00:34:42.9 UTC
Greatest Duration 2091 August 15 at 00:35:13.8 UTC
Equatorial Conjunction 2091 August 15 at 00:58:54.8 UTC
Last Umbral Internal Contact 2091 August 15 at 01:05:55.1 UTC
Last Central Line 2091 August 15 at 01:07:30.0 UTC
Last Umbral External Contact 2091 August 15 at 01:09:01.1 UTC
Last Penumbral External Contact 2091 August 15 at 02:44:54.6 UTC
August 15, 2091 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 1.02156
Eclipse Obscuration 1.04358
Gamma −0.94897
Sun Right Ascension 09h39m24.9s
Sun Declination +14°00'16.0"
Sun Semi-Diameter 15'47.2"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 09h38m32.0s
Moon Declination +13°05'59.9"
Moon Semi-Diameter 16'03.2"
Moon Equatorial Horizontal Parallax 0°58'54.9"
ΔT 115.6 s

Eclipse season

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See also: Eclipse cycle

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.

Eclipse season of August 2091
August 15
Ascending node (new moon)
 August 29
Descending node (full moon)
 
Total solar eclipse
Solar Saros 127		 Total lunar eclipse
Lunar Saros 139
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Eclipses in 2091

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Solar Saros 127

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Inex

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Triad

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Solar eclipses of 2091–2094

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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]

The partial solar eclipses on June 13, 2094 and December 7, 2094 occur in the next lunar year eclipse set.

Solar eclipse series sets from 2091 to 2094
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
122 February 18, 2091
 
Partial 		1.1779 127 August 15, 2091
 
Total 		−0.949
132 February 7, 2092
 
Annular 		0.4322 137 August 3, 2092
 
Annular 		−0.2044
142 January 27, 2093
 
Total 		−0.2737 147 July 23, 2093
 
Annular 		0.5717
152 January 16, 2094
 
Total 		−0.9333 157 July 12, 2094
 
Partial 		1.3150

Saros 127

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This eclipse is a part of Saros series 127, repeating every 18 years, 11 days, and containing 82 events. The series started with a partial solar eclipse on October 10, 991 AD. It contains total eclipses from May 14, 1352 through August 15, 2091. There are no annular or hybrid eclipses in this set. The series ends at member 82 as a partial eclipse on March 21, 2452. 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 31 at 5 minutes, 40 seconds on August 30, 1532. All eclipses in this series occur at the Moon’s ascending node of orbit.[5]

Series members 46–68 occur between 1801 and 2200:
46 47 48
 
February 21, 1803 		 
March 4, 1821 		 
March 15, 1839
49 50 51
 
March 25, 1857 		 
April 6, 1875 		 
April 16, 1893
52 53 54
 
April 28, 1911 		 
May 9, 1929 		 
May 20, 1947
55 56 57
 
May 30, 1965 		 
June 11, 1983 		 
June 21, 2001
58 59 60
 
July 2, 2019 		 
July 13, 2037 		 
July 24, 2055
61 62 63
 
August 3, 2073 		 
August 15, 2091 		 
August 26, 2109
64 65 66
 
September 6, 2127 		 
September 16, 2145 		 
September 28, 2163
67 68
 
October 8, 2181 		 
October 19, 2199

Metonic series

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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.

22 eclipse events between June 1, 2076 and October 27, 2163
June 1–3 March 21–22 January 7–8 October 26–27 August 14–15
119 121 123 125 127
 
June 1, 2076 		 
March 21, 2080 		 
January 7, 2084 		 
October 26, 2087 		 
August 15, 2091
129 131 133 135 137
 
June 2, 2095 		 
March 21, 2099 		 
January 8, 2103 		 
October 26, 2106 		 
August 15, 2110
139 141 143 145 147
 
June 3, 2114 		 
March 22, 2118 		 
January 8, 2122 		 
October 26, 2125 		 
August 15, 2129
149 151 153 155 157
 
June 3, 2133 		 
March 21, 2137 		 
January 8, 2141 		 
October 26, 2144 		 
August 14, 2148
159 161 163 165
 
June 3, 2152 		 
October 27, 2163

Tritos series

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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.

The partial solar eclipses on March 27, 1884 (part of Saros 108) and December 24, 1916 (part of Saros 111) are also a part of this series but are not included in the table below.

Series members between 1971 and 2200
 
July 22, 1971
(Saros 116) 		 
June 21, 1982
(Saros 117) 		 
May 21, 1993
(Saros 118) 		 
April 19, 2004
(Saros 119) 		 
March 20, 2015
(Saros 120)
 
February 17, 2026
(Saros 121) 		 
January 16, 2037
(Saros 122) 		 
December 16, 2047
(Saros 123) 		 
November 16, 2058
(Saros 124) 		 
October 15, 2069
(Saros 125)
 
September 13, 2080
(Saros 126) 		 
August 15, 2091
(Saros 127) 		 
July 15, 2102
(Saros 128) 		 
June 13, 2113
(Saros 129) 		 
May 14, 2124
(Saros 130)
 
April 13, 2135
(Saros 131) 		 
March 12, 2146
(Saros 132) 		 
February 9, 2157
(Saros 133) 		 
January 10, 2168
(Saros 134) 		 
December 9, 2178
(Saros 135)
 
November 8, 2189
(Saros 136) 		 
October 9, 2200
(Saros 137)

Inex series

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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 4, 1802
(Saros 117) 		 
February 12, 1831
(Saros 118) 		 
January 23, 1860
(Saros 119)
 
January 1, 1889
(Saros 120) 		 
December 14, 1917
(Saros 121) 		 
November 23, 1946
(Saros 122)
 
November 3, 1975
(Saros 123) 		 
October 14, 2004
(Saros 124) 		 
September 23, 2033
(Saros 125)
 
September 3, 2062
(Saros 126) 		 
August 15, 2091
(Saros 127) 		 
July 25, 2120
(Saros 128)
 
July 5, 2149
(Saros 129) 		 
June 16, 2178
(Saros 130)

Notes

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  1. ^ "August 14–15, 2091 Total Solar Eclipse". timeanddate. Retrieved 24 August 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 24 August 2024.
  3. ^ "Total Solar Eclipse of 2091 Aug 15". EclipseWise.com. Retrieved 24 August 2024.
  4. ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
  5. ^ "NASA - Catalog of Solar Eclipses of Saros 127". eclipse.gsfc.nasa.gov.

References

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