May 1976 lunar eclipse

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Template:Short description Template:Infobox lunar eclipse A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Thursday, May 13, 1976,[1] with an umbral magnitude of 0.1217. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. 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. Occurring about 1.1 days after perigee (on May 12, 1976, at 17:30 UTC), the Moon's apparent diameter was larger.[2]

Visibility

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

File:Lunar eclipse from moon-1976May13.png File:Lunar eclipse chart close-1976May13.png

Eclipse details

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

May 13, 1976 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 1.07612
Umbral Magnitude 0.12170
Gamma 0.95860
Sun Right Ascension 03h23m03.9s
Sun Declination +18°33'49.8"
Sun Semi-Diameter 15'49.5"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 15h23m42.3s
Moon Declination -17°36'13.1"
Moon Semi-Diameter 16'34.8"
Moon Equatorial Horizontal Parallax 1°00'51.1"
ΔT 46.9 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 April–May 1976
April 29
Descending node (new moon)
 May 13
Ascending node (full moon)
File:SE1976Apr29A.png File:Lunar eclipse chart close-1976May13.png
Annular solar eclipse
Solar Saros 128		 Partial lunar eclipse
Lunar Saros 140

Related eclipses

Eclipses in 1976

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 140

Inex

Triad

Lunar eclipses of 1973–1976

Template:Lunar eclipse set 1973-1976

Saros 140

Template:Lunar Saros series 140

Tritos series

Template:Lunar Tritos series February 2009

Inex series

Template:Lunar Inex series April 2005

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 partial solar eclipses of Solar Saros 147.

May 9, 1967 May 19, 1985
File:SE1967May09P.png File:SE1985May19P.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

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