A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Tuesday, August 17, 2027, with an umbral magnitude of −0.5234. 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 about 1.9 days after apogee (on August 15, 2027, at 10:20 UTC), the Moon's apparent diameter will be smaller.
Visibility The eclipse will be completely visible over North and South America, seen rising over Australia and the central Pacific Ocean and setting over west Africa.
Eclipse details Shown below is a table displaying details about this particular eclipse. It describes various parameters pertaining to this eclipse.
+August 17, 2027 Lunar Eclipse Parameters Parameter Value Penumbral Magnitude 0.54758 Umbral Magnitude −0.52344 Gamma 1.27974 Sun Right Ascension 09h45m58.6s Sun Declination +13°27'30.2" Sun Semi-Diameter 15'47.8" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 21h43m58.8s Moon Declination -12°24'40.9" Moon Semi-Diameter 14'44.9" Moon Equatorial Horizontal Parallax 0°54'07.8" ΔT 72.8 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. The first and last eclipse in this sequence is separated by one synodic month.
+ Eclipse season of July–August 2027 July 18Ascending node (full moon) August 2Descending node (new moon) August 17Ascending node (full moon) Penumbral lunar eclipseLunar Saros 110 Total solar eclipseSolar Saros 136 Penumbral lunar eclipseLunar Saros 148
Related eclipses Eclipses in 2027 An annular solar eclipse on February 6. A penumbral lunar eclipse on February 20. A penumbral lunar eclipse on July 18. A total solar eclipse on August 2. A penumbral lunar eclipse on August 17.
Metonic Preceded by: Lunar eclipse of October 28, 2023 Followed by: Lunar eclipse of June 5, 2031
Tzolkinex Preceded by: Lunar eclipse of July 5, 2020 Followed by: Lunar eclipse of September 28, 2034
Half-Saros Preceded by: Solar eclipse of August 11, 2018 Followed by: Solar eclipse of August 21, 2036
Tritos Preceded by: Lunar eclipse of September 16, 2016 Followed by: Lunar eclipse of July 16, 2038
Lunar Saros 148 Preceded by: Lunar eclipse of August 6, 2009 Followed by: Lunar eclipse of August 27, 2045
Inex Preceded by: Lunar eclipse of September 6, 1998 Followed by: Lunar eclipse of July 26, 2056
Triad Preceded by: Lunar eclipse of October 16, 1940 Followed by: Lunar eclipse of June 18, 2114
Lunar eclipses of 2024–2027
Metonic series
Saros 148
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 155. August 11, 2018August 21, 2036
See also List of lunar eclipses and List of 21st-century lunar eclipses
References
External links Saros cycle 148