August 1980 lunar eclipse

Template:Short description Template:Infobox lunar eclipse A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, August 26, 1980, 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.

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.

File:Lunar eclipse from moon-1980Aug26.png File:Lunar eclipse chart close-1980Aug26.png

Eclipse details

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

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.

Eclipse season of July–August 1980

July 27 Descending node (full moon)	August 10 Ascending node (new moon)	August 26 Descending node (full moon)
File:Lunar eclipse chart close-1980Jul27.png	File:SE1980Aug10A.png	File:Lunar eclipse chart close-1980Aug26.png
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

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two partial solar eclipses of Solar Saros 154.

August 20, 1971	August 31, 1989
File:SE1971Aug20P.png	File:SE1989Aug31P.png

See also

• List of lunar eclipses
• List of 20th-century lunar eclipses

External links

• Template:LEplot1951 link

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