October 2023 lunar eclipse
| Partial eclipse | |||||||||||||
 | |||||||||||||
| Date | October 28, 2023 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | 0.9471 | ||||||||||||
| Magnitude | 0.1234 | ||||||||||||
| Saros cycle | 146 (11 of 72) | ||||||||||||
| Partiality | 77 minutes, 21 seconds | ||||||||||||
| Penumbral | 264 minutes, 34 seconds | ||||||||||||
| |||||||||||||
A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, October 28, 2023,[1] with an umbral magnitude of 0.1234. 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 2.9 days after perigee (on October 25, 2023, at 23:00 UTC), the Moon's apparent diameter was larger.[2]
Visibility
[edit]The eclipse was completely visible over Africa, Europe, and Asia, seen rising over northeastern North America and eastern South America and setting over Australia and the western Pacific Ocean.[3]
 
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 Visibility map |
Gallery
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Surabaya, Indonesia, 20:14 UTC
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Lunar eclipse in Vladivostok, Russia, 20:15 UTC
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Partial from Kumbakonam, India, 20:21 UTC
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Sequence of lunar eclipse from Oria, Italy
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 | 1.11997 |
| Umbral Magnitude | 0.12393 |
| Gamma | 0.94716 |
| Sun Right Ascension | 14h11m25.9s |
| Sun Declination | -13°14'10.5" |
| Sun Semi-Diameter | 16'05.9" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 02h09m47.6s |
| Moon Declination | +14°05'01.6" |
| Moon Semi-Diameter | 16'09.7" |
| Moon Equatorial Horizontal Parallax | 0°59'18.9" |
| ΔT | 71.1 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.
| October 14 Descending node (new moon) |
October 28 Ascending node (full moon) |
|---|---|
 |
|
| Annular solar eclipse Solar Saros 134 |
Partial lunar eclipse Lunar Saros 146 |
Related eclipses
[edit]Eclipses in 2023
[edit]- A hybrid solar eclipse on April 20.
- A penumbral lunar eclipse on May 5.
- An annular solar eclipse on October 14.
- A partial lunar eclipse on October 28.
Metonic
[edit]- Preceded by: Lunar eclipse of January 10, 2020
- Followed by: Lunar eclipse of August 17, 2027
Tzolkinex
[edit]- Preceded by: Lunar eclipse of September 16, 2016
- Followed by: Lunar eclipse of December 9, 2030
Half-Saros
[edit]- Preceded by: Solar eclipse of October 23, 2014
- Followed by: Solar eclipse of November 3, 2032
Tritos
[edit]- Preceded by: Lunar eclipse of November 28, 2012
- Followed by: Lunar eclipse of September 28, 2034
Lunar Saros 146
[edit]- Preceded by: Lunar eclipse of October 17, 2005
- Followed by: Lunar eclipse of November 8, 2041
Inex
[edit]- Preceded by: Lunar eclipse of November 18, 1994
- Followed by: Lunar eclipse of October 8, 2052
Triad
[edit]- Preceded by: Lunar eclipse of December 28, 1936
- Followed by: Lunar eclipse of August 29, 2110
Lunar eclipses of 2020–2023
[edit]| Lunar eclipse series sets from 2020–2023 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||||
| Saros | Date | Type Viewing |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
111
|
2020 Jun 05
|
Penumbral
|
1.24063 | 116
|
2020 Nov 30
|
Penumbral
|
−1.13094 | |
121
|
2021 May 26
|
Total
|
0.47741 | 126
|
2021 Nov 19
|
Partial
|
−0.45525 | |
131
|
2022 May 16
|
Total
|
−0.25324 | 136
|
2022 Nov 08
|
Total
|
0.25703 | |
141
|
2023 May 05
|
Penumbral
|
−1.03495 | 146
|
2023 Oct 28
|
Partial
|
0.94716 | |
| Last set | 2020 Jul 05 | Last set | 2020 Jan 10 | |||||
| Next set | 2024 Mar 25 | Next set | 2024 Sep 18 | |||||
Saros 146
[edit]This eclipse is part of Saros cycle 146.
Metonic series
[edit]This eclipse is the last of four Metonic cycle lunar eclipses on the same date, 28–29 October, each separated by 19 years:
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 in nearly the same location relative to the background stars.
| Metonic events: May 4 and October 28 | |
|---|---|
| Descending node | Ascending node |
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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 partial solar eclipses of Solar Saros 153.
| October 23, 2014 | November 3, 2032 |
|---|---|
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See also
[edit]References
[edit]- ^ "October 28–29, 2023 Partial Lunar Eclipse". timeanddate. Retrieved 18 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 18 November 2024.
- ^ "Partial Lunar Eclipse of 2023 Oct 28" (PDF). NASA. Retrieved 18 November 2024.
- ^ "Partial Lunar Eclipse of 2023 Oct 28". EclipseWise.com. Retrieved 18 November 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit]- Saros cycle 146
- 2023 Oct 28 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
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