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 (on January 18, 2084, at 23:50 UTC), 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 (total); July 29, 2083 (total); and July 17, 2084 (partial).
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.
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.
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 (a semester) 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.
Saros 135 This eclipse is a part of Saros series 135, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on April 13, 1615. It contains partial eclipses from July 20, 1777 through October 28, 1939; total eclipses from November 7, 1957 through July 6, 2354; and a second set of partial eclipses from July 16, 2372 through September 19, 2480. The series ends at member 71 as a penumbral eclipse on May 18, 2877. The longest duration of totality will be produced by member 37 at 106 minutes, 13 seconds on May 12, 2264. All eclipses in this series occur at the Moon’s descending node of orbit.
Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
Tritos series This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
Inex series This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
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 total solar eclipses of Solar Saros 142.
See also List of lunar eclipses and List of 21st-century lunar eclipses
Notes
External links 2084 Jan 22 chart Eclipse Predictions by Fred Espenak, NASA/GSFC