January 2084 lunar eclipse

{{Infobox lunar eclipse

| type = total

| image = Lunar eclipse chart close-2084Jan22.png

| caption = The Moon's hourly motion shown right to left

| date = January 22, 2084

| gamma = −0.3610

| magnitude = 1.1531

| saros_ser = 135

| saros_no = 27 of 71

| totality = 60 minutes, 32 seconds

| partiality = 216 minutes, 16 seconds

| penumbral = 362 minutes, 0 seconds

| p1 = 20:09:13

| u1 = 21:22:08

| u2 = 22:39:59

| greatest = 23:10:14

| u3 = 23:40:31

| u4 = 0:58:23

| p4 = 2:11:13

| previous = July 2083

| next = July 2084

}}

A total lunar eclipse will occur at the Moon’s descending node of orbit on Saturday, January 22, 2084,{{cite web|title=January 22–23, 2084 Total Lunar Eclipse (Blood Moon)|url=https://www.timeanddate.com/eclipse/lunar/2084-january-22|publisher=timeanddate|access-date=14 December 2024}} 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.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=2084&n=136|publisher=timeanddate|access-date=14 December 2024}}

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.{{cite web|title=Total Lunar Eclipse of 2084 Jan 22|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot2051/LE2084Jan22T.pdf|publisher=NASA|access-date=14 December 2024}}

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Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.{{cite web|title=Total Lunar Eclipse of 2084 Jan 22|url=https://eclipsewise.com/lunar/LEprime/2001-2100/LE2084Jan22Tprime.html|publisher=EclipseWise.com|access-date=14 December 2024}}

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|+January 22, 2084 Lunar Eclipse Parameters

! 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 (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.

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|+ Eclipse season of January 2084

! January 7
Ascending node (new moon)
!! January 22
Descending node (full moon)

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align=center

| 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 (a semester) at alternating nodes of the Moon's orbit.{{cite web |last1=van Gent |first1=R.H |title=Solar- and Lunar-Eclipse Predictions from Antiquity to the Present |url=http://www.staff.science.uu.nl/~gent0113/eclipse/eclipsecycles.htm#Sar%20%28Half%20Saros%29 |website=A Catalogue of Eclipse Cycles |publisher=Utrecht University |access-date=6 October 2018}}

The penumbral lunar eclipses on June 8, 2085 and December 1, 2085 occur in the next lunar year eclipse set.

class="wikitable mw-collapsible mw-collapsed" !class="nowrap" colspan="9" \| Lunar eclipse series sets from 2082 to 2085
scope="col" colspan="4" \| Descending node \| rowspan="11" \| ! scope="col" colspan="4" \| Ascending node
style="text-align: center;" ! scope="col" \| Saros ! scope="col" \| Date Viewing ! scope="col" \| Type Chart ! scope="col" \| Gamma ! scope="col" \| Saros ! scope="col" \| Date Viewing ! scope="col" \| Type Chart ! scope="col" \| Gamma
style="text-align: center;" \| 115 \| 2082 Feb 13 \| style="text-align:center;" \|Partial \| 1.0101 \| 120 \| 2082 Aug 08 \| style="text-align:center;" \|Penumbral \| −1.0203
style="text-align: center;" \| 125 \| style="text-align:center;vertical-align:top;" \|2083 Feb 02 \| style="text-align:center;" \|Total \| 0.3463 \| 130 \| 2083 Jul 29 80px \| style="text-align:center;" \|Total 80px \| −0.2143
style="text-align: center;" \| 135 \| 2084 Jan 22 80px \| style="text-align:center;" \|Total 80px \| −0.3610 \| 140 \| style="text-align:center;vertical-align:top;" \|2084 Jul 17 \| style="text-align:center;" \|Partial \| 0.5312
style="text-align: center;" \| 145 \| 2085 Jan 10 \| style="text-align:center;" \|Penumbral \| −1.0453 \| 150 \| 2085 Jul 07 \| style="text-align:center;" \|Penumbral \| 1.2694

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!class="nowrap" colspan="9" | Lunar eclipse series sets from 2082 to 2085

scope="col" colspan="4" | Descending node

| rowspan="11" |

! scope="col" colspan="4" | Ascending node

style="text-align: center;"

! scope="col" | Saros

! scope="col" | Date
Viewing

! scope="col" | Type
Chart

! scope="col" | Gamma

! scope="col" | Saros

! scope="col" | Date
Viewing

! scope="col" | Type
Chart

! scope="col" | Gamma

style="text-align: center;"

| 115

| 2082 Feb 13

| style="text-align:center;" |Partial

| 1.0101

| 120

| 2082 Aug 08

| style="text-align:center;" |Penumbral

| −1.0203

style="text-align: center;"

| 125

| style="text-align:center;vertical-align:top;" |2083 Feb 02

| style="text-align:center;" |Total

| 0.3463

| 130

| 2083 Jul 29
80px

| style="text-align:center;" |Total
80px

| −0.2143

style="text-align: center;"

| 135

| 2084 Jan 22
80px

| style="text-align:center;" |Total
80px

| −0.3610

| 140

| style="text-align:center;vertical-align:top;" |2084 Jul 17

| style="text-align:center;" |Partial

| 0.5312

style="text-align: center;"

| 145

| 2085 Jan 10

| style="text-align:center;" |Penumbral

| −1.0453

| 150

| 2085 Jul 07

| style="text-align:center;" |Penumbral

| 1.2694

= Saros 135 =

= 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 total solar eclipses of Solar Saros 142.

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