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 / 27; 137.3
Max. width of band	210 km (130 mi)
Times (UTC)
Greatest eclipse	2:17:30
References
Saros	139 (31 of 71)
Catalog # (SE5000)	9601

A total solar eclipse will occur on Sunday, April 20, 2042. 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. It will be seen significantly in Western Indonesia (particularly in Sumatra), Eastern Malaysia, Brunei and the Philippines.

Images

Animated path

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. ^[1]

Solar eclipse series sets from 2040 to 2043
Ascending node			Descending node
119	May 11, 2040 Partial		124	November 4, 2040 Annular
129	April 30, 2041 Total		134	October 25, 2041 Annular
139	April 20, 2042 Total		144	October 14, 2042 Annular
149	April 9, 2043 Total (non-central)		154	October 3, 2043 Annular (non-central)

Saros 139

This eclipse is a member of saros series 139, repeating every 18 years, 11 days, 8 hours, containing 71 events. The series started with partial solar eclipse on May 17, 1501. It contains hybrid eclipses on August 11, 1627, through to December 9, 1825; and total eclipses from December 21, 1843, through to March 26, 2601. 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 solar eclipse of June 13, 2132, will be the longest total solar eclipse since July 11, 1991, at 6 minutes, 55.02 seconds.

The longest duration of totality will be produced by member 39 at 7 minutes, 29.22 seconds on July 16, 2186. ^[2] After that date, the durations of totality will decrease until the series ends. This date is the longest solar eclipse computed between 4000 BC and AD 6000. ^[3] Saros series eclipses occur during the Moon's ascending node (a term related to our equator and polar-naming conventions).

Series members 24–45 occur between 1901 and 2300
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	40	41
July 16, 2186	July 27, 2204	August 8, 2222
42	43	44
August 18, 2240	August 29, 2258	September 9, 2276
45
September 20, 2294

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.

Inex series members between 1901 and 2100:
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)

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, progressing from south to north 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	159	161	163	165
July 1, 2076

References

1. 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.
2. Saros Series Catalog of Solar Eclipses NASA Eclipse Web Site.
3. Ten Millennium Catalog of Long Solar Eclipses, −3999 to [phone] BCE to 6000 CE) Fred Espenak.

External links

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