Solar eclipse of August 20, 1971 explained

A partial solar eclipse occurred at the Moon's descending node of orbit between Friday, August 20 and Saturday, August 21, 1971,[1] with a magnitude of 0.508. 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 partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.

A partial eclipse was visible for parts of Australia, Oceania, and Antarctica.

Eclipse details

Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.[2]

August 20, 1971 Solar Eclipse Times! Event! Time (UTC)
First Penumbral External Contact1971 August 20 at 20:52:59.2 UTC
Greatest Eclipse1971 August 20 at 22:39:31.5 UTC
Ecliptic Conjunction1971 August 20 at 22:54:02.4 UTC
Equatorial Conjunction1971 August 20 at 23:50:24.9 UTC
Last Penumbral External Contact1971 August 21 at 00:25:39.4 UTC
August 20, 1971 Solar Eclipse Parameters! Parameter! Value
Eclipse Magnitude0.50797
Eclipse Obscuration0.39282
Gamma−1.26591
Sun Right Ascension09h57m48.0s
Sun Declination+12°25'50.7"
Sun Semi-Diameter15'48.4"
Sun Equatorial Horizontal Parallax08.7"
Moon Right Ascension09h55m45.7s
Moon Declination+11°23'25.4"
Moon Semi-Diameter14'56.3"
Moon Equatorial Horizontal Parallax0°54'49.4"
ΔT41.8 s

Eclipse season

See also: Eclipse cycle. This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight. The first and last eclipse in this sequence is separated by one synodic month.

Related eclipses

Eclipses in 1971

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 154

Inex

Triad

Inex series

Notes and References

  1. Web site: August 20–21, 1971 Partial Solar Eclipse. timeanddate. 8 August 2024.
  2. Web site: Partial Solar Eclipse of 1971 Aug 20. EclipseWise.com. 8 August 2024.