September 1978 lunar eclipse

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Template:Short description Script error: No such module "Unsubst". Template:Infobox lunar eclipse A total lunar eclipse occurred at the Moon’s descending node of orbit on Saturday, September 16, 1978,[1] with an umbral magnitude of 1.3268. 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 2.4 days after perigee (on September 14, 1978, at 10:35 UTC), the Moon's apparent diameter was larger.[2]

Visibility

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

File:Lunar eclipse from moon-1978Sep16.png File:Lunar eclipse chart close-1978Sep16.png

Eclipse details

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

September 16, 1978 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.30598
Umbral Magnitude 1.32683
Gamma 0.29510
Sun Right Ascension 11h36m19.9s
Sun Declination +02°33'33.2"
Sun Semi-Diameter 15'54.7"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 23h35m58.5s
Moon Declination -02°16'47.0"
Moon Semi-Diameter 16'15.0"
Moon Equatorial Horizontal Parallax 0°59'38.4"
ΔT 49.3 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.

Eclipse season of September–October 1978
September 16
Descending node (full moon)
October 2
Ascending node (new moon)
File:Lunar eclipse chart close-1978Sep16.png File:SE1978Oct02P.png
Total lunar eclipse
Lunar Saros 127
Partial solar eclipse
Solar Saros 153

Related eclipses

Eclipses in 1978

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 127

Inex

Triad

Lunar eclipses of 1977–1980

Template:Lunar eclipse set 1977-1980

Saros 127

Template:Lunar Saros series 127

Tritos series

Template:Lunar Tritos series July 2000

Inex series

Template:Lunar Inex series August 2007

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 134.

September 11, 1969 September 23, 1987
File:SE1969Sep11A.png File:SE1987Sep23A.png

See also

Notes

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

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External links

Template:Lunar eclipses