A penumbral lunar eclipse will occur at the Moon’s descending node of orbit on Thursday, October 30, 2031, 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).
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.
Eclipse details Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
+October 30, 2031 Lunar Eclipse Parameters 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.
+ Eclipse season of October–November 2031 October 30Descending node (full moon) November 14Ascending node (new moon) Penumbral lunar eclipseLunar Saros 117 Hybrid solar eclipseSolar 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
Lunar eclipses of 2031–2034
Saros 117
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 partial solar eclipses of Solar Saros 124. October 25, 2022November 4, 2040
See also List of lunar eclipses and List of 21st-century lunar eclipses
Notes
External links