Solar eclipse of March 29, 1987

Last updated
Solar eclipse of March 29, 1987
SE1987Mar29H.png
Map
Type of eclipse
NatureHybrid
Gamma −0.3053
Magnitude 1.0013
Maximum eclipse
Duration8 s (0 min 8 s)
Coordinates 12°18′S2°18′W / 12.3°S 2.3°W / -12.3; -2.3
Max. width of band5 km (3.1 mi)
Times (UTC)
Greatest eclipse12:49:47
References
Saros 129 (50 of 80)
Catalog # (SE5000) 9480

A total solar eclipse occurred at the Moon's ascending node of orbit on Sunday, March 29, 1987, [1] with a magnitude of 1.0013. It was a hybrid event, with only a fraction of its path as total, and longer sections at the start and end as an annular eclipse. The eclipse lasted a maximum of only 7.57 seconds. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. The Moon's apparent diameter was larger because it occurred 4.7 days after perigee (on March 24, 1987, at 19:00 UTC) and 7.8 days before apogee (on April 6, 1987, at 7:40 UTC). [2]

Contents

Totality of this eclipse was not visible on any land, while annularity was visible in southern Argentina, Gabon, Equatorial Guinea, Cameroon, Central African Republic, Sudan (part of the path of annularity crossed today's South Sudan), Ethiopia, Djibouti and Somaliland. A partial eclipse was visible for parts of southern and central South America, Antarctica, Africa, and the Middle East.

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]

March 29, 1987 Solar Eclipse Times
EventTime (UTC)
First Penumbral External Contact1987 March 29 at 10:03:29.8 UTC
First Umbral External Contact1987 March 29 at 11:05:14.4 UTC
First Central Line1987 March 29 at 11:05:40.9 UTC
Greatest Duration1987 March 29 at 11:05:40.9 UTC
First Umbral Internal Contact1987 March 29 at 11:06:07.5 UTC
First Penumbral Internal Contact1987 March 29 at 12:14:03.2 UTC
Equatorial Conjunction1987 March 29 at 12:31:19.9 UTC
Ecliptic Conjunction1987 March 29 at 12:46:28.0 UTC
Greatest Eclipse1987 March 29 at 12:49:47.3 UTC
Last Penumbral Internal Contact1987 March 29 at 13:25:55.5 UTC
Last Umbral Internal Contact1987 March 29 at 14:33:36.4 UTC
Last Central Line1987 March 29 at 14:34:05.6 UTC
Last Umbral External Contact1987 March 29 at 14:34:34.9 UTC
Last Penumbral External Contact1987 March 29 at 15:36:18.1 UTC
March 29, 1987 Solar Eclipse Parameters
ParameterValue
Eclipse Magnitude1.00134
Eclipse Obscuration1.00267
Gamma−0.30531
Sun Right Ascension00h30m29.5s
Sun Declination+03°17'32.1"
Sun Semi-Diameter16'01.1"
Sun Equatorial Horizontal Parallax08.8"
Moon Right Ascension00h31m03.7s
Moon Declination+03°02'04.7"
Moon Semi-Diameter15'47.7"
Moon Equatorial Horizontal Parallax0°57'58.2"
ΔT55.4 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 March–April 1987
March 29
Ascending node (new moon)
April 14
Descending node (full moon)
SE1987Mar29H.png Lunar eclipse chart close-1987Apr14.png
Hybrid solar eclipse
Solar Saros 129
Penumbral lunar eclipse
Lunar Saros 141

Eclipses in 1987

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 129

Inex

Triad

Solar eclipses of 1986–1989

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 1986 to 1989
Ascending node Descending node
SarosMapGammaSarosMapGamma
119 April 9, 1986
SE1986Apr09P.png
Partial
−1.0822124 October 3, 1986
SE1986Oct03H.png
Hybrid
0.9931
129 March 29, 1987
SE1987Mar29H.png
Hybrid
−0.3053134 September 23, 1987
SE1987Sep23A.png
Annular
0.2787
139 March 18, 1988
SE1988Mar18T.png
Total
0.4188144 September 11, 1988
SE1988Sep11A.png
Annular
−0.4681
149 March 7, 1989
SE1989Mar07P.png
Partial
1.0981154 August 31, 1989
SE1989Aug31P.png
Partial
−1.1928

Saros 129

This eclipse is a part of Saros series 129, repeating every 18 years, 11 days, and containing 80 events. The series started with a partial solar eclipse on October 3, 1103. It contains annular eclipses from May 6, 1464 through March 18, 1969; hybrid eclipses from March 29, 1987 through April 20, 2023; and total eclipses from April 30, 2041 through July 26, 2185. The series ends at member 80 as a partial eclipse on February 21, 2528. 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 annularity was produced by member 34 at 5 minutes, 10 seconds on October 4, 1698, and the longest duration of totality will be produced by member 58 at 3 minutes, 43 seconds on June 25, 2131. All eclipses in this series occur at the Moon’s ascending node of orbit. [5]

Series members 40–61 occur between 1801 and 2200:
404142
SE1806Dec10A.gif
December 10, 1806
SE1824Dec20Am.gif
December 20, 1824
SE1842Dec31A.gif
December 31, 1842
434445
SE1861Jan11A.gif
January 11, 1861
SE1879Jan22A.gif
January 22, 1879
SE1897Feb01A.gif
February 1, 1897
464748
SE1915Feb14A.png
February 14, 1915
SE1933Feb24A.png
February 24, 1933
SE1951Mar07A.png
March 7, 1951
495051
SE1969Mar18A.png
March 18, 1969
SE1987Mar29H.png
March 29, 1987
SE2005Apr08H.png
April 8, 2005
525354
SE2023Apr20H.png
April 20, 2023
SE2041Apr30T.png
April 30, 2041
SE2059May11T.png
May 11, 2059
555657
SE2077May22T.png
May 22, 2077
SE2095Jun02T.png
June 2, 2095
Saros129 57van80 SE2113Jun13T.jpg
June 13, 2113
585960
Saros129 58van80 SE2131Jun25T.jpg
June 25, 2131
Saros129 59van80 SE2149Jul05T.jpg
July 5, 2149
Saros129 60van80 SE2167Jul16T.jpg
July 16, 2167
61
Saros129 61van80 SE2185Jul26T.jpg
July 26, 2185

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.

20 eclipse events between June 10, 1964 and August 21, 2036
June 10–11March 28–29January 14–16November 3August 21–22
117119121123125
SE1964Jun10P.png
June 10, 1964
SE1968Mar28P.png
March 28, 1968
SE1972Jan16A.png
January 16, 1972
SE1975Nov03P.png
November 3, 1975
SE1979Aug22A.png
August 22, 1979
127129131133135
SE1983Jun11T.png
June 11, 1983
SE1987Mar29H.png
March 29, 1987
SE1991Jan15A.png
January 15, 1991
SE1994Nov03T.png
November 3, 1994
SE1998Aug22A.png
August 22, 1998
137139141143145
SE2002Jun10A.png
June 10, 2002
SE2006Mar29T.png
March 29, 2006
SE2010Jan15A.png
January 15, 2010
SE2013Nov03H.png
November 3, 2013
SE2017Aug21T.png
August 21, 2017
147149151153155
SE2021Jun10A.png
June 10, 2021
SE2025Mar29P.png
March 29, 2025
SE2029Jan14P.png
January 14, 2029
SE2032Nov03P.png
November 3, 2032
SE2036Aug21P.png
August 21, 2036

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
SE1801Sep08P.png
September 8, 1801
(Saros 112)
SE1812Aug07P.gif
August 7, 1812
(Saros 113)
SE1823Jul08P.gif
July 8, 1823
(Saros 114)
SE1834Jun07P.gif
June 7, 1834
(Saros 115)
SE1845May06An.gif
May 6, 1845
(Saros 116)
SE1856Apr05T.gif
April 5, 1856
(Saros 117)
SE1867Mar06A.gif
March 6, 1867
(Saros 118)
SE1878Feb02A.gif
February 2, 1878
(Saros 119)
SE1889Jan01T.png
January 1, 1889
(Saros 120)
SE1899Dec03A.png
December 3, 1899
(Saros 121)
SE1910Nov02P.png
November 2, 1910
(Saros 122)
SE1921Oct01T.png
October 1, 1921
(Saros 123)
SE1932Aug31T.png
August 31, 1932
(Saros 124)
SE1943Aug01A.png
August 1, 1943
(Saros 125)
SE1954Jun30T.png
June 30, 1954
(Saros 126)
SE1965May30T.png
May 30, 1965
(Saros 127)
SE1976Apr29A.png
April 29, 1976
(Saros 128)
SE1987Mar29H.png
March 29, 1987
(Saros 129)
SE1998Feb26T.png
February 26, 1998
(Saros 130)
SE2009Jan26A.png
January 26, 2009
(Saros 131)
SE2019Dec26A.png
December 26, 2019
(Saros 132)
SE2030Nov25T.png
November 25, 2030
(Saros 133)
SE2041Oct25A.png
October 25, 2041
(Saros 134)
SE2052Sep22A.png
September 22, 2052
(Saros 135)
SE2063Aug24T.png
August 24, 2063
(Saros 136)
SE2074Jul24A.png
July 24, 2074
(Saros 137)
SE2085Jun22A.png
June 22, 2085
(Saros 138)
SE2096May22T.png
May 22, 2096
(Saros 139)
SE2107Apr23A.png
April 23, 2107
(Saros 140)
SE2118Mar22A.png
March 22, 2118
(Saros 141)
SE2129Feb18T.png
February 18, 2129
(Saros 142)
SE2140Jan20A.png
January 20, 2140
(Saros 143)
SE2150Dec19A.png
December 19, 2150
(Saros 144)
SE2161Nov17T.png
November 17, 2161
(Saros 145)
SE2172Oct17H.png
October 17, 2172
(Saros 146)
Saros147 32van80 SE2183Sep16A.jpg
September 16, 2183
(Saros 147)
Saros148 31van75 SE2194Aug16T.jpg
August 16, 2194
(Saros 148)

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
SE1813Jul27T.gif
July 27, 1813
(Saros 123)
SE1842Jul08T.png
July 8, 1842
(Saros 124)
SE1871Jun18A.gif
June 18, 1871
(Saros 125)
SE1900May28T.png
May 28, 1900
(Saros 126)
SE1929May09T.png
May 9, 1929
(Saros 127)
SE1958Apr19A.png
April 19, 1958
(Saros 128)
SE1987Mar29H.png
March 29, 1987
(Saros 129)
SE2016Mar09T.png
March 9, 2016
(Saros 130)
SE2045Feb16A.png
February 16, 2045
(Saros 131)
SE2074Jan27A.png
January 27, 2074
(Saros 132)
SE2103Jan08T.png
January 8, 2103
(Saros 133)
SE2131Dec19A.png
December 19, 2131
(Saros 134)
SE2160Nov27A.png
November 27, 2160
(Saros 135)
SE2189Nov08T.png
November 8, 2189
(Saros 136)

Notes

  1. "March 29, 1987 Total Solar Eclipse". timeanddate. Retrieved 9 August 2024.
  2. "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 9 August 2024.
  3. "Hybrid Solar Eclipse of 1987 Mar 29". EclipseWise.com. Retrieved 9 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 129". eclipse.gsfc.nasa.gov.

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References