A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, October 29, 1966, with an umbral magnitude of −0.1249. 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 4 days after apogee (on October 25, 1966, at 9:55 UTC), the Moon's apparent diameter was smaller.
Visibility The eclipse was completely visible over northeast Asia, much of North America, and the Pacific Ocean, seen rising over east and southeast Asia and Australia and setting over eastern North America and South America.
Eclipse details Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
+October 29, 1966 Lunar Eclipse Parameters Parameter Value Penumbral Magnitude 0.95172 Umbral Magnitude −0.12488 Gamma −1.05999 Sun Right Ascension 14h12m57.7s Sun Declination -13°22'20.9" Sun Semi-Diameter 16'06.2" Sun Equatorial Horizontal Parallax 08.9" Moon Right Ascension 02h14m38.8s Moon Declination +12°29'37.7" Moon Semi-Diameter 14'57.5" Moon Equatorial Horizontal Parallax 0°54'53.8" ΔT 37.2 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 1966 October 29Ascending node (full moon) November 12Descending node (new moon) Penumbral lunar eclipseLunar Saros 116 Total solar eclipseSolar Saros 142
Related eclipses Eclipses in 1966 A penumbral lunar eclipse on May 4. An annular solar eclipse on May 20. A penumbral lunar eclipse on October 29. A total solar eclipse on November 12.
Metonic Preceded by: Lunar eclipse of January 9, 1963 Followed by: Lunar eclipse of August 17, 1970
Tzolkinex Preceded by: Lunar eclipse of September 17, 1959 Followed by: Lunar eclipse of December 10, 1973
Half-Saros Preceded by: Solar eclipse of October 23, 1957 Followed by: Solar eclipse of November 3, 1975
Tritos Preceded by: Lunar eclipse of November 29, 1955 Followed by: Lunar eclipse of September 27, 1977
Lunar Saros 116 Preceded by: Lunar eclipse of October 18, 1948 Followed by: Lunar eclipse of November 8, 1984
Inex Preceded by: Lunar eclipse of November 18, 1937 Followed by: Lunar eclipse of October 8, 1995
Triad Preceded by: Lunar eclipse of December 28, 1879 Followed by: Lunar eclipse of August 29, 2053
Lunar eclipses of 1966–1969
Metonic series
Saros 116
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 solar eclipses of Solar Saros 123. October 23, 1957November 3, 1975
See also List of lunar eclipses List of 20th-century lunar eclipses
Notes
External links