June 1983 lunar eclipse
Template:Short description Template:Infobox lunar eclipse A partial lunar eclipse occurred at the Moon’s descending node of orbit on Saturday, June 25, 1983,[1] with an umbral magnitude of 0.3348. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in 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 3.7 days before apogee (on June 28, 1983, at 23:40 UTC), the Moon's apparent diameter was smaller.[2]
Visibility
The eclipse was completely visible over western and central North America, western South America, and Antarctica, seen rising over Australia and the western Pacific Ocean and setting over eastern North and South America and west Africa.[3]
| File:Lunar eclipse from moon-1983Jun25.png File:Lunar eclipse chart close-1983Jun25.png |
Eclipse details
Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 1.39014 |
| Umbral Magnitude | 0.33479 |
| Gamma | −0.81520 |
| Sun Right Ascension | 06h14m04.1s |
| Sun Declination | +23°24'07.7" |
| Sun Semi-Diameter | 15'44.1" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 18h13m49.6s |
| Moon Declination | -24°08'36.4" |
| Moon Semi-Diameter | 14'54.6" |
| Moon Equatorial Horizontal Parallax | 0°54'43.1" |
| ΔT | 53.4 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.
| June 11 Ascending node (new moon) |
June 25 Descending node (full moon) |
|---|---|
| File:SE1983Jun11T.png | File:Lunar eclipse chart close-1983Jun25.png |
| Total solar eclipse Solar Saros 127 |
Partial lunar eclipse Lunar Saros 139 |
Related eclipses
Eclipses in 1983
- A total solar eclipse on June 11.
- A partial lunar eclipse on June 25.
- An annular solar eclipse on December 4.
- A penumbral lunar eclipse on December 20.
Metonic
- Preceded by: Lunar eclipse of September 6, 1979
- Followed by: Lunar eclipse of April 14, 1987
Tzolkinex
- Preceded by: Lunar eclipse of May 13, 1976
- Followed by: Lunar eclipse of August 6, 1990
Half-Saros
- Preceded by: Solar eclipse of June 20, 1974
- Followed by: Solar eclipse of June 30, 1992
Tritos
- Preceded by: Lunar eclipse of July 26, 1972
- Followed by: Lunar eclipse of May 25, 1994
Lunar Saros 139
- Preceded by: Lunar eclipse of June 14, 1965
- Followed by: Lunar eclipse of July 5, 2001
Inex
- Preceded by: Lunar eclipse of July 16, 1954
- Followed by: Lunar eclipse of June 4, 2012
Triad
- Preceded by: Lunar eclipse of August 23, 1896
- Followed by: Lunar eclipse of April 25, 2070
Lunar eclipses of 1980–1984
Template:Lunar eclipse set 1980-1984
Saros 139
Template:Lunar Saros series 139
Tritos series
Template:Lunar Tritos series April 2005
Inex series
Template:Lunar Inex series June 2012
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 two total solar eclipses of Solar Saros 146.
| June 20, 1974 | June 30, 1992 |
|---|---|
| File:SE1974Jun20T.png | File:SE1992Jun30T.png |
See also
Notes
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