August 1980 lunar eclipse

{{Infobox lunar eclipse

| type = penumbral

| image = Lunar eclipse chart close-1980Aug26.png

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

| date = August 26, 1980

| gamma = −1.1608

| magnitude = −0.2531

| saros_ser = 147

| saros_no = 7 of 71

| penumbral = 214 minutes, 21 seconds

| p1 = 1:43:21

| greatest = 3:30:29

| p4 = 5:17:42

| previous = July 1980

| next = January 1981

}}

A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, August 26, 1980,{{cite web|title=August 25–26, 1980 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1980-august-26|publisher=timeanddate|access-date=4 January 2025}} with an umbral magnitude of −0.2531. 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 1.7 days before perigee (on August 27, 1980, at 20:05 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=1980&n=136|publisher=timeanddate|access-date=4 January 2025}}

Visibility

The eclipse was completely visible over central and eastern North America, South America, and west Africa, seen rising over western North America and the central Pacific Ocean and setting over central and eastern Africa, Europe, and the Middle East.{{cite web|title=Penumbral Lunar Eclipse of 1980 Aug 26|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1980Aug26N.pdf|publisher=NASA|access-date=4 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 1980 Aug 26|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1980Aug26Nprime.html|publisher=EclipseWise.com|access-date=4 January 2025}}

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|+August 26, 1980 Lunar Eclipse Parameters

! Parameter

! Value

Penumbral Magnitude

| 0.70891

Umbral Magnitude

| −0.25310

Gamma

| −1.16082

Sun Right Ascension

| 10h19m57.4s

Sun Declination

| +10°23'14.8"

Sun Semi-Diameter

| 15'49.7"

Sun Equatorial Horizontal Parallax

| 08.7"

Moon Right Ascension

| 22h21m14.5s

Moon Declination

| -11°30'44.4"

Moon Semi-Diameter

| 16'27.2"

Moon Equatorial Horizontal Parallax

| 1°00'23.3"

ΔT

| 51.1 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. The first and last eclipse in this sequence is separated by one synodic month.

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|+ Eclipse season of July–August 1980

! July 27
Descending node (full moon)
!! August 10
Ascending node (new moon)
!! August 26
Descending node (full moon)

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| Penumbral lunar eclipse
Lunar Saros 109

Annular solar eclipse
Solar Saros 135

Penumbral lunar eclipse
Lunar Saros 147

Related eclipses

= Eclipses in 1980 =

A total solar eclipse on February 16.
A penumbral lunar eclipse on March 1.
A penumbral lunar eclipse on July 27.
An annular solar eclipse on August 10.
A penumbral lunar eclipse on August 26.

= Metonic =

Preceded by: Lunar eclipse of November 6, 1976
Followed by: Lunar eclipse of June 13, 1984

= Tzolkinex =

Preceded by: Lunar eclipse of July 15, 1973
Followed by: Lunar eclipse of October 7, 1987

= Half-Saros =

Preceded by: Solar eclipse of August 20, 1971
Followed by: Solar eclipse of August 31, 1989

= Tritos =

Preceded by: Lunar eclipse of September 25, 1969
Followed by: Lunar eclipse of July 26, 1991

= Lunar Saros 147 =

Preceded by: Lunar eclipse of August 15, 1962
Followed by: Lunar eclipse of September 6, 1998

= Inex =

Preceded by: Lunar eclipse of September 15, 1951
Followed by: Lunar eclipse of August 6, 2009

= Triad =

Preceded by: Lunar eclipse of October 25, 1893
Followed by: Lunar eclipse of June 27, 2067

= Lunar eclipses of 1977–1980 =

= Saros 147 =

= 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 154.

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