Solar eclipse of October 12, 1977

A total solar eclipse occurred on October 12, 1977. 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. Totality was visible in the Pacific Ocean, Colombia and Venezuela.

Solar eclipse of October 12, 1977
Map
Type of eclipse
NatureTotal
Gamma0.3836
Magnitude1.0269
Maximum eclipse
Duration157 sec (2 m 37 s)
Coordinates14.1°N 123.6°W / 14.1; -123.6
Max. width of band99 km (62 mi)
Times (UTC)
Greatest eclipse20:27:27
References
Saros143 (21 of 72)
Catalog # (SE5000)9459

Solar eclipses of 1975–1978

There were 8 solar eclipses (at 6 month intervals) between May 11, 1975 and October 2, 1978.

Saros 143

It is a part of Saros cycle 143, repeating every 18 years, 11 days, containing 72 events. The series started with partial solar eclipse on March 7, 1617 and total event from June 24, 1797 through October 24, 1995. It has hybrid eclipses from November 3, 2013 through December 6, 2067, and annular eclipses from December 16, 2085 through September 16, 2536. The series ends at member 72 as a partial eclipse on April 23, 2873. The longest duration of totality was 3 minutes, 50 seconds on August 19, 1887. All eclipses in this series occurs at the Moon’s ascending node.

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.

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.

Notes

    References
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