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Solar eclipse of May 21, 1993

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Solar eclipse of May 21, 1993
Map
Type of eclipse
NaturePartial
Gamma1.1372
Magnitude0.7352
Maximum eclipse
Coordinates68°48′N 162°18′E / 68.8°N 162.3°E / 68.8; 162.3
Times (UTC)
Greatest eclipse14:20:15
References
Saros118 (67 of 72)
Catalog # (SE5000)9493

A partial solar eclipse occurred at the Moon's descending node of orbit on Friday, May 21, 1993,[1] with a magnitude of 0.7352. 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.

A partial eclipse was visible for parts of Alaska, Canada, Greenland, the United States, and Northern Europe.

Images

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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.[2]

May 21, 1993 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1993 May 21 at 12:19:45.7 UTC
Ecliptic Conjunction 1993 May 21 at 14:07:30.6 UTC
Greatest Eclipse 1993 May 21 at 14:20:14.6 UTC
Equatorial Conjunction 1993 May 21 at 14:34:45.0 UTC
Last Penumbral External Contact 1993 May 21 at 16:20:31.6 UTC
May 21, 1993 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.73519
Eclipse Obscuration 0.65896
Gamma 1.13720
Sun Right Ascension 03h53m29.8s
Sun Declination +20°15'44.4"
Sun Semi-Diameter 15'48.0"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 03h52m59.3s
Moon Declination +21°18'54.5"
Moon Semi-Diameter 15'16.2"
Moon Equatorial Horizontal Parallax 0°56'02.5"
ΔT 59.4 s

Eclipse season

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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 May–June 1993
May 21
Descending node (new moon)
June 4
Ascending node (full moon)
Partial solar eclipse
Solar Saros 118
Total lunar eclipse
Lunar Saros 130
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Eclipses in 1993

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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 118

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Inex

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Triad

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Solar eclipses of 1993–1996

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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.[3]

Solar eclipse series sets from 1993 to 1996
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
118 May 21, 1993

Partial
1.1372 123 November 13, 1993

Partial
−1.0411
128

Partial in Bismarck, ND, USA
May 10, 1994

Annular
0.4077 133

Totality in Bolivia
November 3, 1994

Total
−0.3522
138 April 29, 1995

Annular
−0.3382 143

Totality in Dundlod, India
October 24, 1995

Total
0.3518
148 April 17, 1996

Partial
−1.058 153 October 12, 1996

Partial
1.1227

Saros 118

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This eclipse is a part of Saros series 118, repeating every 18 years, 11 days, and containing 72 events. The series started with a partial solar eclipse on May 24, 803 AD. It contains total eclipses from August 19, 947 AD through October 25, 1650; hybrid eclipses on November 4, 1668 and November 15, 1686; and annular eclipses from November 27, 1704 through April 30, 1957. The series ends at member 72 as a partial eclipse on July 15, 2083. 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 34 at 6 minutes, 59 seconds on May 16, 1398, and the longest duration of annularity was produced by member 59 at 1 minutes, 58 seconds on February 23, 1849. All eclipses in this series occur at the Moon’s descending node of orbit.[4]

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 descending node.

21 eclipse events between May 21, 1993 and May 20, 2069
May 20–21 March 9 December 25–26 October 13–14 August 1–2
118 120 122 124 126

May 21, 1993

March 9, 1997

December 25, 2000

October 14, 2004

August 1, 2008
128 130 132 134 136

May 20, 2012

March 9, 2016

December 26, 2019

October 14, 2023

August 2, 2027
138 140 142 144 146

May 21, 2031

March 9, 2035

December 26, 2038

October 14, 2042

August 2, 2046
148 150 152 154 156

May 20, 2050

March 9, 2054

December 26, 2057

October 13, 2061

August 2, 2065
158

May 20, 2069

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

September 19, 1819
(Saros 112)

August 28, 1848
(Saros 113)

August 9, 1877
(Saros 114)

July 21, 1906
(Saros 115)

June 30, 1935
(Saros 116)

June 10, 1964
(Saros 117)

May 21, 1993
(Saros 118)

April 30, 2022
(Saros 119)

April 11, 2051
(Saros 120)

March 21, 2080
(Saros 121)

March 1, 2109
(Saros 122)

February 9, 2138
(Saros 123)

January 21, 2167
(Saros 124)

December 31, 2195
(Saros 125)

References

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  1. ^ "May 21, 1993 Partial Solar Eclipse". timeanddate. Retrieved 10 August 2024.
  2. ^ "Partial Solar Eclipse of 1993 May 21". EclipseWise.com. Retrieved 10 August 2024.
  3. ^ 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.
  4. ^ "NASA - Catalog of Solar Eclipses of Saros 118". eclipse.gsfc.nasa.gov.
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