October 1985 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 Monday, October 28, 1985,[1] with an umbral magnitude of 1.0736. 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 1.2 days before apogee (on October 29, 1985, at 21:50 UTC), the Moon's apparent diameter was smaller.[2]

This lunar eclipse was the second of a tetrad, with four total lunar eclipses in series, the others being on May 4, 1985; April 24, 1986; and October 17, 1986.

Visibility

The eclipse was completely visible over northern Europe, Asia, and western Australia, seen rising over Africa and much of Europe and setting over eastern Australia, northwestern North America, and the central Pacific Ocean.[3]

File:Lunar eclipse from moon-1985Oct28.png File:Lunar eclipse chart close-1985Oct28.png

Eclipse details

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

October 28, 1985 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.16733
Umbral Magnitude 1.07357
Gamma −0.40218
Sun Right Ascension 14h11m49.8s
Sun Declination -13°16'24.9"
Sun Semi-Diameter 16'06.1"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 02h12m27.9s
Moon Declination +12°56'45.9"
Moon Semi-Diameter 14'43.3"
Moon Equatorial Horizontal Parallax 0°54'01.6"
ΔT 54.8 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.

Eclipse season of October–November 1985
October 28
Ascending node (full moon)
 November 12
Descending node (new moon)
File:Lunar eclipse chart close-1985Oct28.png File:SE1985Nov12T.png
Total lunar eclipse
Lunar Saros 126		 Total solar eclipse
Solar Saros 152

Related eclipses

Eclipses in 1985

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 126

Inex

Triad

Lunar eclipses of 1984–1987

Template:Lunar eclipse set 1984-1987

Metonic series

Template:Metonic lunar eclipse 1966-2023

Saros 126

Template:Lunar Saros series 126

Tritos series

Template:Lunar Tritos series August 2007

Inex series

Template:Lunar Inex series October 2014

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 total solar eclipses of Solar Saros 133.

October 23, 1976 November 3, 1994
File:SE1976Oct23T.png File:SE1994Nov03T.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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