July 1980 lunar eclipse
Template:Short description Template:Infobox lunar eclipse A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, July 27, 1980,[1] with an umbral magnitude of −0.7263. 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 3.2 days before perigee (on July 30, 1980, at 23:40 UTC), the Moon's apparent diameter was larger.[2]
Visibility
The eclipse was completely visible over central and east Africa, eastern Europe, much of Asia, Australia, and Antarctica, seen rising over western Europe and west Africa and setting over northeast Asia and the western Pacific Ocean.[3]
| File:Lunar eclipse from moon-1980Jul27.png File:Lunar eclipse chart close-1980Jul27.png |
Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.25354 |
| Umbral Magnitude | −0.72634 |
| Gamma | 1.41391 |
| Sun Right Ascension | 08h28m52.6s |
| Sun Declination | +19°02'51.8" |
| Sun Semi-Diameter | 15'45.1" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 20h28m01.0s |
| Moon Declination | -17°40'21.2" |
| Moon Semi-Diameter | 16'04.5" |
| Moon Equatorial Horizontal Parallax | 0°58'59.8" |
| ΔT | 51.0 s |
Eclipse season
Script error: No such module "Labelled list hatnote". 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.
| 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
- Followed by: Lunar eclipse of May 15, 1984
Tzolkinex
- Preceded by: Lunar eclipse of June 15, 1973
Half-Saros
- Preceded by: Solar eclipse of July 22, 1971
Tritos
- Preceded by: Lunar eclipse of August 27, 1969
- Followed by: Lunar eclipse of June 27, 1991
Lunar Saros 109
- Preceded by: Lunar eclipse of July 17, 1962
- Followed by: Lunar eclipse of August 8, 1998
Inex
- Preceded by: Lunar eclipse of August 17, 1951
- Followed by: Lunar eclipse of July 7, 2009
Triad
- Preceded by: Lunar eclipse of September 25, 1893
- Followed by: Lunar eclipse of May 28, 2067
Lunar eclipses of 1980–1984
Template:Lunar eclipse set 1980-1984
Saros 109
Template:Lunar Saros series 109
Tritos series
Template:Lunar Tritos series May 2002
Inex series
Template:Lunar Inex series July 2009
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[5] This lunar eclipse is related to one partial solar eclipse of Solar Saros 116.
| July 22, 1971 |
|---|
| File:SE1971Jul22P.png |
See also
Notes
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