Solar eclipse of January 4, 1973

Last updated
Solar eclipse of January 4, 1973
SE1973Jan04A.png
Map
Type of eclipse
NatureAnnular
Gamma −0.2644
Magnitude 0.9303
Maximum eclipse
Duration469 s (7 min 49 s)
Coordinates 37°54′S51°12′W / 37.9°S 51.2°W / -37.9; -51.2
Max. width of band271 km (168 mi)
Times (UTC)
Greatest eclipse15:46:21
References
Saros 131 (48 of 70)
Catalog # (SE5000) 9449

An annular solar eclipse occurred at the Moon's ascending node of orbit on Thursday, January 4, 1973, with a magnitude of 0.9303. 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. Annularity was visible from Chile and Argentina.

Contents

Eclipses in 1973

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 131

Inex

Triad

Solar eclipses of 1971–1974

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]

The partial solar eclipses on February 25, 1971 and August 20, 1971 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1971 to 1974
Descending node Ascending node
SarosMapGammaSarosMapGamma
116 July 22, 1971
SE1971Jul22P.png
Partial
1.513121 January 16, 1972
SE1972Jan16A.png
Annular
−0.9365
126 July 10, 1972
SE1972Jul10T.png
Total
0.6872131 January 4, 1973
SE1973Jan04A.png
Annular
−0.2644
136 June 30, 1973
SE1973Jun30T.png
Total
−0.0785141 December 24, 1973
SE1973Dec24A.png
Annular
0.4171
146 June 20, 1974
SE1974Jun20T.png
Total
−0.8239151 December 13, 1974
SE1974Dec13P.png
Partial
1.0797

Saros 131

This eclipse is a part of Saros series 131, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on August 1, 1125. It contains total eclipses from March 27, 1522 through May 30, 1612; hybrid eclipses from June 10, 1630 through July 24, 1702; and annular eclipses from August 4, 1720 through June 18, 2243. The series ends at member 70 as a partial eclipse on September 2, 2369. 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 28 at 58 seconds on May 30, 1612, and the longest duration of annularity was produced by member 50 at 7 minutes, 54 seconds on January 26, 2009. All eclipses in this series occur at the Moon’s ascending node of orbit. [2]

Series members 39–60 occur between 1801 and 2200:
394041
SE1810Sep28A.png
September 28, 1810
SE1828Oct09A.png
October 9, 1828
SE1846Oct20A.png
October 20, 1846
424344
SE1864Oct30A.png
October 30, 1864
SE1882Nov10A.png
November 10, 1882
SE1900Nov22A.png
November 22, 1900
454647
SE1918Dec03A.png
December 3, 1918
SE1936Dec13A.png
December 13, 1936
SE1954Dec25A.png
December 25, 1954
484950
SE1973Jan04A.png
January 4, 1973
SE1991Jan15A.png
January 15, 1991
SE2009Jan26A.png
January 26, 2009
515253
SE2027Feb06A.png
February 6, 2027
SE2045Feb16A.png
February 16, 2045
SE2063Feb28A.png
February 28, 2063
545556
SE2081Mar10A.png
March 10, 2081
SE2099Mar21A.png
March 21, 2099
SE2117Apr02A.png
April 2, 2117
575859
SE2135Apr13A.png
April 13, 2135
SE2153Apr23A.png
April 23, 2153
SE2171May05A.png
May 5, 2171
60
SE2189May15A.png
May 15, 2189

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
SE1809Apr14A.gif
April 14, 1809
(Saros 116)
SE1820Mar14T.gif
March 14, 1820
(Saros 117)
SE1831Feb12A.gif
February 12, 1831
(Saros 118)
SE1842Jan11A.gif
January 11, 1842
(Saros 119)
SE1852Dec11T.gif
December 11, 1852
(Saros 120)
SE1863Nov11A.png
November 11, 1863
(Saros 121)
SE1874Oct10An.gif
October 10, 1874
(Saros 122)
SE1885Sep08T.png
September 8, 1885
(Saros 123)
SE1896Aug09T.png
August 9, 1896
(Saros 124)
SE1907Jul10A.png
July 10, 1907
(Saros 125)
SE1918Jun08T.png
June 8, 1918
(Saros 126)
SE1929May09T.png
May 9, 1929
(Saros 127)
SE1940Apr07A.png
April 7, 1940
(Saros 128)
SE1951Mar07A.png
March 7, 1951
(Saros 129)
SE1962Feb05T.png
February 5, 1962
(Saros 130)
SE1973Jan04A.png
January 4, 1973
(Saros 131)
SE1983Dec04A.png
December 4, 1983
(Saros 132)
SE1994Nov03T.png
November 3, 1994
(Saros 133)
SE2005Oct03A.png
October 3, 2005
(Saros 134)
SE2016Sep01A.png
September 1, 2016
(Saros 135)
SE2027Aug02T.png
August 2, 2027
(Saros 136)
SE2038Jul02A.png
July 2, 2038
(Saros 137)
SE2049May31A.png
May 31, 2049
(Saros 138)
SE2060Apr30T.png
April 30, 2060
(Saros 139)
SE2071Mar31A.png
March 31, 2071
(Saros 140)
SE2082Feb27A.png
February 27, 2082
(Saros 141)
SE2093Jan27T.png
January 27, 2093
(Saros 142)
SE2103Dec29A.png
December 29, 2103
(Saros 143)
SE2114Nov27A.png
November 27, 2114
(Saros 144)
SE2125Oct26T.png
October 26, 2125
(Saros 145)
SE2136Sep26T.png
September 26, 2136
(Saros 146)
Saros147 30van80 SE2147Aug26A.jpg
August 26, 2147
(Saros 147)
SE2158Jul25T.png
July 25, 2158
(Saros 148)
Saros149 29van71 SE2169Jun25T.jpg
June 25, 2169
(Saros 149)
Saros150 26van71 SE2180May24A.jpg
May 24, 2180
(Saros 150)
SE2191Apr23A.png
April 23, 2191
(Saros 151)

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.

22 eclipse events between January 5, 1935 and August 11, 2018
January 4–5October 23–24August 10–12May 30–31March 18–19
111113115117119
SE1935Jan05P.png
January 5, 1935
SE1942Aug12P.png
August 12, 1942
SE1946May30P.png
May 30, 1946
SE1950Mar18A.png
March 18, 1950
121123125127129
SE1954Jan05A.png
January 5, 1954
SE1957Oct23T.png
October 23, 1957
SE1961Aug11A.png
August 11, 1961
SE1965May30T.png
May 30, 1965
SE1969Mar18A.png
March 18, 1969
131133135137139
SE1973Jan04A.png
January 4, 1973
SE1976Oct23T.png
October 23, 1976
SE1980Aug10A.png
August 10, 1980
SE1984May30A.png
May 30, 1984
SE1988Mar18T.png
March 18, 1988
141143145147149
SE1992Jan04A.png
January 4, 1992
SE1995Oct24T.png
October 24, 1995
SE1999Aug11T.png
August 11, 1999
SE2003May31A.png
May 31, 2003
SE2007Mar19P.png
March 19, 2007
151153155
SE2011Jan04P.png
January 4, 2011
SE2014Oct23P.png
October 23, 2014
SE2018Aug11P.png
August 11, 2018

Notess

  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. "NASA - Catalog of Solar Eclipses of Saros 131". eclipse.gsfc.nasa.gov.

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References