| Date | October 30, 2031 |
|---|---|
| Gamma | 1.1774 |
| Magnitude | −0.3193 |
| Saros ser | 117 |
| Saros no | 53 of 72 |
| Penumbral | 231 minutes, 45 seconds |
| P 1 | 5:49:29 |
| Greatest | 7:46:45 |
| P 4 | 9:41:15 |
| Previous | June 2031 |
| Next | April 2032 |
A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Thursday, October 30, 2031,[1] with an umbral magnitude of −0.3193. 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. The Moon's apparent diameter will be near the average diameter because it will occur 7.6 days after perigee (on October 22, 2031, at 16:20 UTC) and 6.6 days before apogee (on November 5, 2031, at 21:45 UTC).[2]
Visibility
The eclipse will be completely visible over North America, western South America, and the eastern Pacific Ocean, seen rising over eastern Australia and northeast Asia and setting over eastern South America, west Africa, and western Europe.[3]
Eclipse details
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 | 0.71726 |
| Umbral Magnitude | −0.31925 |
| Gamma | 1.17738 |
| Sun Right Ascension | 14h17m25.0s |
| Sun Declination | -13°44'38.7" |
| Sun Semi-Diameter | 16'06.3" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 02h16m19.7s |
| Moon Declination | +14°49'53.3" |
| Moon Semi-Diameter | 15'32.2" |
| Moon Equatorial Horizontal Parallax | 0°57'01.3" |
| ΔT | 74.8 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.
| October 30 Descending node (full moon) | November 14 Ascending node (new moon) |
|---|---|
| Penumbral lunar eclipse Lunar Saros 117 | Hybrid solar eclipse Solar Saros 143 |
Related eclipses
Eclipses in 2031
- A penumbral lunar eclipse on May 7.
- An annular solar eclipse on May 21.
- A penumbral lunar eclipse on June 5.
- A penumbral lunar eclipse on October 30.
- A hybrid solar eclipse on November 14.
Metonic
- Preceded by: Lunar eclipse of January 12, 2028
- Followed by: Lunar eclipse of August 19, 2035
Tzolkinex
- Preceded by: Lunar eclipse of September 18, 2024
- Followed by: Lunar eclipse of December 11, 2038
Half-Saros
- Preceded by: Solar eclipse of October 25, 2022
- Followed by: Solar eclipse of November 4, 2040
Tritos
- Preceded by: Lunar eclipse of November 30, 2020
- Followed by: Lunar eclipse of September 29, 2042
Lunar Saros 117
- Preceded by: Lunar eclipse of October 18, 2013
- Followed by: Lunar eclipse of November 9, 2049
Inex
- Preceded by: Lunar eclipse of November 20, 2002
- Followed by: Lunar eclipse of October 9, 2060
Triad
- Preceded by: Lunar eclipse of December 29, 1944
- Followed by: Lunar eclipse of August 31, 2118
Half-Saros cycle
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 124.
| October 25, 2022 | November 4, 2040 |
|---|---|
See also
Notes
- ^ "October 29–30, 2031 Penumbral Lunar Eclipse". timeanddate. Retrieved 21 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 21 November 2024.
- ^ "Penumbral Lunar Eclipse of 2031 Oct 30". NASA. Retrieved 21 November 2024.
- ^ "Penumbral Lunar Eclipse of 2031 Oct 30". EclipseWise.com. Retrieved 21 November 2024.
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros