Solar eclipse of July 31, 1981

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
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 continental path of totality fell entirely within the Soviet Union, belonging to Georgia, Kazakhstan and Russia today. The southern part of Mount Elbrus, the highest mountain in Europe, also lies in the path of totality.

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.

Saros 145[edit]

This solar eclipse is a part of Saros cycle 145, repeating every 18 years, 11 days, 8 hours, containing 77 events. The series started with a 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 (September 26, 2009). "Statistics for Solar Eclipses of Saros 145". NASA. Archived from the original on September 30, 2009. 

External links[edit]

Photos: