Solar eclipse of July 31, 1981

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Solar eclipse of July 31, 1981
SE1981Jul31T.png
Map
Type of eclipse
Nature Total
Gamma 0.5792
Magnitude 1.0258
Maximum eclipse
Duration 122 sec (2 m 2 s)
Coordinates 53°18′N 134°06′E / 53.3°N 134.1°E / 53.3; 134.1
Max. width of band 108 km (67 mi)
Times (UTC)
Greatest eclipse 3:46:37
References
Saros 145 (20 of 77)
Catalog # (SE5000) 9467

A total solar eclipse occurred on July 31, 1981. 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. The path of totality went through the Turkey and Soviet Union.

Related eclipses[edit]

Solar eclipses of 1979-1982[edit]

Each member 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.

Solar eclipse series sets from 1979 to 1982
Descending node   Ascending node
Saros Map Saros Map
120 SE1979Feb26T.png
February 26, 1979
Total
125 SE1979Aug22A.png
August 22, 1979
Annular
130 SE1980Feb16T.png
February 16, 1980
Total
135 SE1980Aug10A.png
August 10, 1980
Annular
140 SE1981Feb04A.png
February 4, 1981
Annular
145 SE1981Jul31T.png
July 31, 1981
Total
150 SE1982Jan25P.png
January 25, 1982
Partial
155 SE1982Jul20P.png
July 20, 1982
Partial
Partial solar eclipses on June 21, 1982 and December 15, 1982 occur in the next lunar year eclipse set.

Saros 145[edit]

This solar eclipse is a part of Saros cycle 145, repeating every 18 years, 11 days, containing 77 events. The series started with partial solar eclipse on January 4, 1639, and reached a first annular eclipse on June 6, 1891. It was a hybrid event on June 17, 1909, and total eclipses from June 29, 1927 through September 9, 2648. The series ends at member 77 as a partial eclipse on April 17, 3009. The longest eclipse will occur on June 25, 2522, with a maximum duration of totality of 7 minutes, 12 seconds. [1]

Metonic series[edit]

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).

References[edit]

  1. ^ Espenak, Fred (Project & Website Manager), Statistics for Solar Eclipses of Saros 145, NASA, updated 2009 September 26.

External links[edit]

Photos: