January 2084 lunar eclipse
A total lunar eclipse will occur at the Moon’s descending node of orbit on Saturday, January 22, 2084, with an umbral magnitude of 1.1531. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 4 days after apogee, the Moon's apparent diameter will be smaller.
This lunar eclipse will be the third of an almost tetrad, with the others being on February 2, 2083 ; July 29, 2083 ; and July 17, 2084.
Visibility
The eclipse will be completely visible over Africa, Europe, and west and central Asia, seen rising over North and South America and setting over south and east Asia and western Australia.Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 2.24251 |
| Umbral Magnitude | 1.15312 |
| Gamma | −0.36098 |
| Sun Right Ascension | 20h20m36.4s |
| Sun Declination | -19°30'37.0" |
| Sun Semi-Diameter | 16'15.1" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 08h20m09.1s |
| Moon Declination | +19°11'55.7" |
| Moon Semi-Diameter | 14'55.1" |
| Moon Equatorial Horizontal Parallax | 0°54'45.0" |
| ΔT | 111.5 s |
Eclipse season
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months 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.| January 7 Ascending node | January 22 Descending node |
| Partial solar eclipse Solar Saros 123 | Total lunar eclipse Lunar Saros 135 |
Related eclipses
Eclipses in 2084
- A partial solar eclipse on January 7.A total lunar eclipse on January 22.
- An annular solar eclipse on July 3.
- A partial lunar eclipse on July 17.
- A total solar eclipse on December 27.
Metonic
- Preceded by: Lunar eclipse of April 4, 2080
- Followed by: Lunar eclipse of November 10, 2087
Tzolkinex
- Preceded by: Lunar eclipse of December 10, 2076
- Followed by: Lunar eclipse of March 5, 2091
Half-Saros
- Preceded by: Solar eclipse of January 16, 2075
- Followed by: Solar eclipse of January 27, 2093
Tritos
- Preceded by: Lunar eclipse of February 22, 2073
- Followed by: Lunar eclipse of December 21, 2094
Lunar Saros 135
- Preceded by: Lunar eclipse of January 11, 2066
- Followed by: Lunar eclipse of February 3, 2102
Inex
- Preceded by: Lunar eclipse of February 11, 2055
- Followed by: Lunar eclipse of January 2, 2113
Triad
- Preceded by: Lunar eclipse of March 24, 1997
- Followed by: Lunar eclipse of November 23, 2170
Lunar eclipses of 2082–2085
This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours at alternating nodes of the Moon's orbit.The penumbral lunar eclipses on June 8, 2085 and December 1, 2085 occur in the next lunar year eclipse set.
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days. This lunar eclipse is related to two total solar eclipses of Solar Saros 142.| January 16, 2075 | January 27, 2093 |