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.
Eclipse details Shown below is a table displaying details about this particular lunar 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 27Descending node (full moon) August 10Ascending node (new moon) August 26Descending node (full moon) Penumbral lunar eclipseLunar Saros 109 Annular solar eclipseSolar Saros 135 Penumbral lunar eclipseLunar 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. August 20, 1971August 31, 1989
See also List of lunar eclipses List of 20th-century lunar eclipses
Notes
External links