Solar eclipse of July 31, 1981

Solar eclipse of July 31, 1981
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.

Solar eclipses of 1979-1982

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.

Saros 145

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

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

  1. ↑ Espenak, Fred (September 26, 2009). "Statistics for Solar Eclipses of Saros 145". NASA. Archived from the original on September 30, 2009.

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