December 2048 lunar eclipse
| Penumbral eclipse | |||||||||
 The Moon's hourly motion shown right to left | |||||||||
| Date | December 20, 2048 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.0624 | ||||||||
| Magnitude | −0.1420 | ||||||||
| Saros cycle | 145 (13 of 71) | ||||||||
| Penumbral | 281 minutes, 36 seconds | ||||||||
| |||||||||
A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Sunday, December 20, 2048,[1] with an umbral magnitude of −0.1420. 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 only about 13 hours before apogee (on December 20, 2048, at 19:30 UTC), the Moon's apparent diameter will be smaller.[2]
Visibility
[edit]The eclipse will be completely visible over North America and much of South America, seen rising over northeast Asia and the western Pacific Ocean and setting over west and central Africa and Europe.[3]
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Eclipse details
[edit]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 | 0.96321 |
| Umbral Magnitude | −0.14202 |
| Gamma | −1.06244 |
| Sun Right Ascension | 17h55m49.3s |
| Sun Declination | -23°25'43.8" |
| Sun Semi-Diameter | 16'15.4" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 05h55m26.5s |
| Moon Declination | +22°28'37.2" |
| Moon Semi-Diameter | 14'42.6" |
| Moon Equatorial Horizontal Parallax | 0°53'59.0" |
| ΔT | 84.4 s |
Eclipse season
[edit]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.
| December 5 Ascending node (new moon) |
December 20 Descending node (full moon) |
|---|---|
 |
|
| Total solar eclipse Solar Saros 133 |
Penumbral lunar eclipse Lunar Saros 145 |
Related eclipses
[edit]Eclipses in 2048
[edit]- A total lunar eclipse on January 1.
- An annular solar eclipse on June 11.
- A partial lunar eclipse on June 26.
- A total solar eclipse on December 5.
- A penumbral lunar eclipse on December 20.
Metonic
[edit]- Preceded by: Lunar eclipse of March 3, 2045
- Followed by: Lunar eclipse of October 8, 2052
Tzolkinex
[edit]- Preceded by: Lunar eclipse of November 8, 2041
- Followed by: Lunar eclipse of February 1, 2056
Half-Saros
[edit]- Preceded by: Solar eclipse of December 15, 2039
- Followed by: Solar eclipse of December 26, 2057
Tritos
[edit]- Preceded by: Lunar eclipse of January 21, 2038
- Followed by: Lunar eclipse of November 19, 2059
Lunar Saros 145
[edit]- Preceded by: Lunar eclipse of December 9, 2030
- Followed by: Lunar eclipse of December 31, 2066
Inex
[edit]- Preceded by: Lunar eclipse of January 10, 2020
- Followed by: Lunar eclipse of November 29, 2077
Triad
[edit]- Preceded by: Lunar eclipse of February 19, 1962
- Followed by: Lunar eclipse of October 22, 2135
Lunar eclipses of 2046–2049
[edit]| Descending node | Ascending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
| 115 | 2046 Jan 22
|
Partial
|
120 | 2046 Jul 18
|
Partial
| |
| 125 | 2047 Jan 12
|
Total
|
130 | 2047 Jul 07
|
Total
| |
| 135 | 2048 Jan 01
|
Total
|
140 | 2048 Jun 26
|
Partial
| |
| 145 | 2048 Dec 20
|
Penumbral
|
150 | 2049 Jun 15
|
Penumbral
| |
| Last set | 2045 Aug 27 | Last set | 2045 Mar 03 | |||
| Next set | 2049 Nov 09 | Next set | 2049 May 17 | |||
Metonic series
[edit]The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will be in nearly the same location relative to the background stars.
| Ascending node | Descending node |
|---|---|
|
|
|
|
Half-Saros cycle
[edit]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 152.
| December 15, 2039 | December 26, 2057 |
|---|---|
|
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See also
[edit]Notes
[edit]- ^ "December 19–20, 2048 Penumbral Lunar Eclipse". timeanddate. Retrieved 11 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 11 December 2024.
- ^ "Penumbral Lunar Eclipse of 2048 Dec 20" (PDF). NASA. Retrieved 11 December 2024.
- ^ "Penumbral Lunar Eclipse of 2048 Dec 20". EclipseWise.com. Retrieved 11 December 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit]- 2048 Dec 20 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
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