Solar eclipse of April 20, 2042

Solar eclipse of April 20, 2042
Solar eclipse of April 20, 2042
	Map
Type of eclipse
Nature	Total
Gamma	0.2956
Magnitude	1.0614
Maximum eclipse
Duration	291 s (4 min 51 s)
Coordinates	27°00′N137°18′E / 27°N 137.3°E
Max. width of band	210 km (130 mi)
Times (UTC)
Greatest eclipse	2:17:30
References
Saros	139 (31 of 71)
Catalog # (SE5000)	9601

Last updated September 22, 2024

A total solar eclipse will occur at the Moon's ascending node of orbit between Saturday, April 19 and Sunday, April 20, 2042,^[1] with a magnitude of 1.0614. 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 21 hours after perigee (on April 19, 2042, at 5:25 UTC), the Moon's apparent diameter will be larger.^[2]

The path of totality will be visible from parts of western Indonesia (particularly Sumatra), eastern Malaysia, Brunei and the Philippines. A partial solar eclipse will be visible for parts of South Asia, Southeast Asia, northern Australia, East Asia, Northeast Asia, Hawaii, and northwestern North America.

Images

Animated path

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.^[3]

April 20, 2042 Solar Eclipse Times
Event	Time (UTC)
First Penumbral External Contact	2042 April 19 at 23:41:45.0 UTC
First Umbral External Contact	2042 April 20 at 00:37:26.5 UTC
First Central Line	2042 April 20 at 00:38:41.2 UTC
First Umbral Internal Contact	2042 April 20 at 00:39:55.9 UTC
First Penumbral Internal Contact	2042 April 20 at 01:40:21.0 UTC
Greatest Eclipse	2042 April 20 at 02:17:30.1 UTC
Ecliptic Conjunction	2042 April 20 at 02:20:31.9 UTC
Greatest Duration	2042 April 20 at 02:21:20.1 UTC
Equatorial Conjunction	2042 April 20 at 02:32:33.0 UTC
Last Penumbral Internal Contact	2042 April 20 at 02:54:18.5 UTC
Last Umbral Internal Contact	2042 April 20 at 03:54:56.1 UTC
Last Central Line	2042 April 20 at 03:56:09.9 UTC
Last Umbral External Contact	2042 April 20 at 03:57:23.7 UTC
Last Penumbral External Contact	2042 April 20 at 04:53:11.4 UTC

April 20, 2042 Solar Eclipse Parameters
Parameter	Value
Eclipse Magnitude	1.06144
Eclipse Obscuration	1.12666
Gamma	0.29559
Sun Right Ascension	01h52m12.4s
Sun Declination	+11°31'19.4"
Sun Semi-Diameter	15'55.3"
Sun Equatorial Horizontal Parallax	08.8"
Moon Right Ascension	01h51m39.9s
Moon Declination	+11°47'27.9"
Moon Semi-Diameter	16'37.6"
Moon Equatorial Horizontal Parallax	1°01'01.4"
ΔT	79.8 s

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.

Eclipse season of April 2042
April 5 Descending node (full moon)	April 20 Ascending node (new moon)

Penumbral lunar eclipse Lunar Saros 113	Total solar eclipse Solar Saros 139

Related eclipses

Solar eclipses of 2040–2043

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]

Solar eclipse series sets from 2040 to 2043
Ascending node			Descending node
Saros	Map	Gamma	Saros	Map	Gamma
119	May 11, 2040 Partial	−1.2529	124	November 4, 2040 Partial	1.0993
129	April 30, 2041 Total	−0.4492	134	October 25, 2041 Annular	0.4133
139	April 20, 2042 Total	0.2956	144	October 14, 2042 Annular	−0.303
149	April 9, 2043 Total (non-central)	1.0031	154	October 3, 2043 Annular (non-central)	1.0102

Saros 139

This eclipse is a part of Saros series 139, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on May 17, 1501. It contains hybrid eclipses from August 11, 1627 through December 9, 1825 and total eclipses from December 21, 1843 through March 26, 2601. There are no annular eclipses in this set. The series ends at member 71 as a partial eclipse on July 3, 2763. 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 will be produced by member 61 at 7 minutes, 29.22 seconds on July 16, 2186. This date is the longest solar eclipse computed between 4000 BC and AD 6000.^[5] All eclipses in this series occur at the Moon’s ascending node of orbit.^[6]

Series members 18–39 occur between 1801 and 2200:
18	19	20
November 29, 1807	December 9, 1825	December 21, 1843
21	22	23
December 31, 1861	January 11, 1880	January 22, 1898
24	25	26
February 3, 1916	February 14, 1934	February 25, 1952
27	28	29
March 7, 1970	March 18, 1988	March 29, 2006
30	31	32
April 8, 2024	April 20, 2042	April 30, 2060
33	34	35
May 11, 2078	May 22, 2096	June 3, 2114
36	37	38
June 13, 2132	June 25, 2150	July 5, 2168
39
July 16, 2186

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.

21 eclipse events between July 1, 2000 and July 1, 2076
July 1–2	April 19–20	February 5–7	November 24–25	September 12–13
117	119	121	123	125
July 1, 2000	April 19, 2004	February 7, 2008	November 25, 2011	September 13, 2015
127	129	131	133	135
July 2, 2019	April 20, 2023	February 6, 2027	November 25, 2030	September 12, 2034
137	139	141	143	145
July 2, 2038	April 20, 2042	February 5, 2046	November 25, 2049	September 12, 2053
147	149	151	153	155
July 1, 2057	April 20, 2061	February 5, 2065	November 24, 2068	September 12, 2072
157
July 1, 2076

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.

Series members between 1801 and 2200
March 4, 1802 (Saros 117)	February 1, 1813 (Saros 118)	January 1, 1824 (Saros 119)	November 30, 1834 (Saros 120)	October 30, 1845 (Saros 121)
September 29, 1856 (Saros 122)	August 29, 1867 (Saros 123)	July 29, 1878 (Saros 124)	June 28, 1889 (Saros 125)	May 28, 1900 (Saros 126)
April 28, 1911 (Saros 127)	March 28, 1922 (Saros 128)	February 24, 1933 (Saros 129)	January 25, 1944 (Saros 130)	December 25, 1954 (Saros 131)
November 23, 1965 (Saros 132)	October 23, 1976 (Saros 133)	September 23, 1987 (Saros 134)	August 22, 1998 (Saros 135)	July 22, 2009 (Saros 136)
June 21, 2020 (Saros 137)	May 21, 2031 (Saros 138)	April 20, 2042 (Saros 139)	March 20, 2053 (Saros 140)	February 17, 2064 (Saros 141)
January 16, 2075 (Saros 142)	December 16, 2085 (Saros 143)	November 15, 2096 (Saros 144)	October 16, 2107 (Saros 145)	September 15, 2118 (Saros 146)
August 15, 2129 (Saros 147)	July 14, 2140 (Saros 148)	June 14, 2151 (Saros 149)	May 14, 2162 (Saros 150)	April 12, 2173 (Saros 151)
March 12, 2184 (Saros 152)	February 10, 2195 (Saros 153)

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.

Series members between 1801 and 2200
September 28, 1810 (Saros 131)	September 7, 1839 (Saros 132)	August 18, 1868 (Saros 133)
July 29, 1897 (Saros 134)	July 9, 1926 (Saros 135)	June 20, 1955 (Saros 136)
May 30, 1984 (Saros 137)	May 10, 2013 (Saros 138)	April 20, 2042 (Saros 139)
March 31, 2071 (Saros 140)	March 10, 2100 (Saros 141)	February 18, 2129 (Saros 142)
January 30, 2158 (Saros 143)	January 9, 2187 (Saros 144)

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References

↑ "April 19–20, 2042 Total Solar Eclipse". timeanddate. Retrieved 14 August 2024.
↑ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 14 August 2024.
↑ "Total Solar Eclipse of 2042 Apr 20". EclipseWise.com. Retrieved 14 August 2024.
↑ 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.
↑ Ten Millennium Catalog of Long Solar Eclipses, −3999 to +6000 (4000 BCE to 6000 CE) Fred Espenak.
↑ "NASA - Catalog of Solar Eclipses of Saros 139". eclipse.gsfc.nasa.gov.

External links

http://eclipse.gsfc.nasa.gov/SEplot/SEplot2001/SE2042Apr20T.GIF

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
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[1] "April 19–20, 2042 Total Solar Eclipse". timeanddate. Retrieved 14 August 2024.

[2] "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 14 August 2024.

[3] "Total Solar Eclipse of 2042 Apr 20". EclipseWise.com. Retrieved 14 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] Ten Millennium Catalog of Long Solar Eclipses, −3999 to +6000 (4000 BCE to 6000 CE) Fred Espenak.

[6] "NASA - Catalog of Solar Eclipses of Saros 139". eclipse.gsfc.nasa.gov.

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Solar eclipse of April 20, 2042

Contents

Images

Eclipse details

Eclipse season

Related eclipses

Eclipses in 2042

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 139

Inex

Triad