January 1982 lunar eclipse

{{Infobox lunar eclipse

| type = total

| image = Lunar eclipse chart close-1982Jan09.png

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

| date = January 9, 1982

| gamma = −0.2916

| magnitude = 1.3310

| saros_ser = 124

| saros_no = 47 of 74

| totality = 77 minutes, 39 seconds

| partiality = 203 minutes, 50 seconds

| penumbral = 319 minutes, 6 seconds

| p1 = 17:16:20

| u1 = 18:13:56

| u2 = 19:17:01

| greatest = 19:55:51

| u3 = 20:34:40

| u4 = 21:37:45

| p4 = 22:35:26

| previous = July 1981

| next = July 1982

}}

A total lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, January 9, 1982,{{cite web|title=January 9–10, 1982 Total Lunar Eclipse (Blood Moon)|url=https://www.timeanddate.com/eclipse/lunar/1982-january-9|publisher=timeanddate|access-date=6 January 2025}} with an umbral magnitude of 1.3310. 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 1.3 days after perigee (on January 8, 1982, at 11:30 UTC), the Moon's apparent diameter was larger.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1982&n=136|publisher=timeanddate|access-date=6 January 2025}}

Visibility

The eclipse was completely visible over much of Africa, Europe, and Asia, seen rising over northeastern North America, eastern South America, and west Africa and setting over Australia and the western Pacific Ocean.{{cite web|title=Total Lunar Eclipse of 1982 Jan 09|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1982Jan09T.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=Total Lunar Eclipse of 1982 Jan 09|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1982Jan09Tprime.html|publisher=EclipseWise.com|access-date=6 January 2025}}

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|+January 9, 1982 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 2.31475

Umbral Magnitude

| 1.33103

Gamma

| −0.29158

Sun Right Ascension

| 19h23m18.7s

Sun Declination

| -22°03'36.2"

Sun Semi-Diameter

| 16'15.8"

Sun Equatorial Horizontal Parallax

| 08.9"

Moon Right Ascension

| 07h23m15.4s

Moon Declination

| +21°45'55.7"

Moon Semi-Diameter

| 16'32.0"

Moon Equatorial Horizontal Parallax

| 1°00'40.7"

ΔT

| 52.3 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 January 1982

! January 9
Ascending node (full moon)
!! January 25
Descending node (new moon)

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| Total lunar eclipse
Lunar Saros 124

Partial solar eclipse
Solar Saros 150

Related eclipses

= Eclipses in 1982 =

= Metonic =

Preceded by: Lunar eclipse of March 24, 1978
Followed by: Lunar eclipse of October 28, 1985

= Tzolkinex =

Preceded by: Lunar eclipse of November 29, 1974
Followed by: Lunar eclipse of February 20, 1989

= Half-Saros =

Preceded by: Solar eclipse of January 4, 1973
Followed by: Solar eclipse of January 15, 1991

= Tritos =

Preceded by: Lunar eclipse of February 10, 1971
Followed by: Lunar eclipse of December 9, 1992

= Lunar Saros 124 =

Preceded by: Lunar eclipse of December 30, 1963
Followed by: Lunar eclipse of January 21, 2000

= Inex =

Preceded by: Lunar eclipse of January 29, 1953
Followed by: Lunar eclipse of December 21, 2010

= Triad =

Preceded by: Lunar eclipse of March 11, 1895
Followed by: Lunar eclipse of November 9, 2068

= Lunar eclipses of 1980–1984 =

= Saros 124 =

= 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 annular solar eclipses of Solar Saros 131.

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