November 1984 lunar eclipse

{{Infobox lunar eclipse

| type = penumbral

| image = Lunar eclipse chart close-1984Nov08.png

| caption = The Moon's hourly motion shown right to left

| date = November 8, 1984

| gamma = −1.0900

| magnitude = −0.1825

| saros_ser = 116

| saros_no = 56 of 73

| penumbral = 268 minutes, 23 seconds

| p1 = 15:41:04

| greatest = 17:55:14

| p4 = 20:09:27

| previous = June 1984

| next = May 1985

}}

A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Thursday, November 8, 1984,{{cite web|title=November 8–9, 1984 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1984-november-8|publisher=timeanddate|access-date=6 January 2025}} with an umbral magnitude of −0.1825. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 3.8 days after apogee (on November 4, 1984, at 22:40 UTC), the Moon's apparent diameter was smaller.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1984&n=136|publisher=timeanddate|access-date=6 January 2025}}

Visibility

The eclipse was completely visible over eastern Europe, northeast Africa, Asia, and western Australia, seen rising over western Europe and west and central Africa and setting over eastern Australia, northwestern North America, and the central Pacific Ocean.{{cite web|title=Penumbral Lunar Eclipse of 1984 Nov 08|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1984Nov08N.pdf|publisher=NASA|access-date=6 January 2025}}

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Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.{{cite web|title=Penumbral Lunar Eclipse of 1984 Nov 08|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1984Nov08Nprime.html|publisher=EclipseWise.com|access-date=6 January 2025}}

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|+November 8, 1984 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 0.89929

Umbral Magnitude

| −0.18247

Gamma

| −1.08998

Sun Right Ascension

| 14h56m10.9s

Sun Declination

| -16°46'34.8"

Sun Semi-Diameter

| 16'08.9"

Sun Equatorial Horizontal Parallax

| 08.9"

Moon Right Ascension

| 02h57m45.0s

Moon Declination

| +15°51'17.9"

Moon Semi-Diameter

| 14'55.7"

Moon Equatorial Horizontal Parallax

| 0°54'47.1"

ΔT

| 54.2 s

Eclipse season

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.

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|+ Eclipse season of November 1984

! November 8
Ascending node (full moon)
!! November 22
Descending node (new moon)

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| Penumbral lunar eclipse
Lunar Saros 116

Annular solar eclipse
Solar Saros 142

Related eclipses

= Eclipses in 1984 =

A penumbral lunar eclipse on May 15.
An annular solar eclipse on May 30.
A penumbral lunar eclipse on June 13.
A penumbral lunar eclipse on November 8.
A total solar eclipse on November 22.

= Metonic =

Preceded by: Lunar eclipse of January 20, 1981
Followed by: Lunar eclipse of August 27, 1988

= Tzolkinex =

Preceded by: Lunar eclipse of September 27, 1977
Followed by: Lunar eclipse of December 21, 1991

= Half-Saros =

Preceded by: Solar eclipse of November 3, 1975
Followed by: Solar eclipse of November 13, 1993

= Tritos =

Preceded by: Lunar eclipse of December 10, 1973
Followed by: Lunar eclipse of October 8, 1995

= Lunar Saros 116 =

Preceded by: Lunar eclipse of October 29, 1966
Followed by: Lunar eclipse of November 20, 2002

= Inex =

Preceded by: Lunar eclipse of November 29, 1955
Followed by: Lunar eclipse of October 18, 2013

= Triad =

Preceded by: Lunar eclipse of January 8, 1898
Followed by: Lunar eclipse of September 9, 2071

= Lunar eclipses of 1984–1987 =

= Metonic series =

= Saros 116 =

= Tritos series =

= Inex series =

= Half-Saros cycle =

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros This lunar eclipse is related to two partial solar eclipses of Solar Saros 123.

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