August 1971 lunar eclipse

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Template:Short description Template:Infobox lunar eclipse A total lunar eclipse occurred at the Moon’s ascending node of orbit on Friday, August 6, 1971,[1] with an umbral magnitude of 1.7283. It was a central lunar eclipse, in which part of the Moon passed through the center of the Earth's shadow. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 2.3 days before perigee (on August 9, 1971, at 2:00 UTC), the Moon's apparent diameter was larger.[2]

Visibility

The eclipse was completely visible over central and east Africa, much of Asia, western Australia, and Antarctica, seen rising over central and eastern South America, Europe, and west Africa and setting over east and northeast Asia and eastern Australia.[3]

File:Lunar eclipse from moon-1971Aug06.png File:Lunar eclipse chart close-1971Aug06.png

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]

August 6, 1971 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.69580
Umbral Magnitude 1.72830
Gamma −0.07944
Sun Right Ascension 09h04m36.6s
Sun Declination +16°43'16.0"
Sun Semi-Diameter 15'46.2"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 21h04m44.2s
Moon Declination -16°47'39.7"
Moon Semi-Diameter 16'17.9"
Moon Equatorial Horizontal Parallax 0°59'49.1"
ΔT 41.8 s

Eclipse season

Script error: No such module "Labelled list hatnote". 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.

Eclipse season of July–August 1971
July 22
Descending node (new moon)
 August 6
Ascending node (full moon)
 August 20
Descending node (new moon)
File:SE1971Jul22P.png File:Lunar eclipse chart close-1971Aug06.png File:SE1971Aug20P.png
Partial solar eclipse
Solar Saros 116		 Total lunar eclipse
Lunar Saros 128		 Partial solar eclipse
Solar Saros 154

Related eclipses

Eclipses in 1971

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 128

Inex

Triad

Lunar eclipses of 1969–1973

Template:Lunar eclipse set 1969–1973

Saros 128

Template:Lunar Saros series 128

Tritos series

Template:Lunar Tritos series May 2004

Inex series

Template:Lunar Inex series July 2000

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to two annular solar eclipses of Solar Saros 135.

July 31, 1962 August 10, 1980
File:SE1962Jul31A.png File:SE1980Aug10A.png

See also

Notes

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  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".
  4. ↑ Script error: No such module "citation/CS1".
  5. ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

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External links

Template:Lunar eclipses

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