October 1966 lunar eclipse

A penumbral lunar eclipse took place on Saturday, October 29, 1966, the second of two lunar eclipses in 1966. This was a deep penumbral eclipse, with over 90% within Penumbral Shadow.^[1]

Visibility

Related lunar eclipses

Lunar year series

Lunar eclipse series sets from 1966–1969
Descending node				Ascending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
111	1966 May 4	Penumbral	1.05536	116	1966 Oct 29	Penumbral	−1.05999
121	1967 Apr 24	Total	0.29722	126	1967 Oct 18	Total	−0.36529
131	1968 Apr 13	Total	−0.41732	136	1968 Oct 6	Total	0.36054
141	1969 Apr 2	Penumbral	−1.17648	146	1969 Sep 25	Penumbral	1.06558

Last set	1965 Jun 14			Last set	1965 Dec 8

Next set	1970 Feb 21			Next set	1969 Aug 27

Metonic series

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
1966 May 4 - Penumbral (111) 1985 May 4 - Total (121) 2004 May 4 - Total (131) 2023 May 5 - Penumbral (141)	1966 Oct 29 - Penumbral (116) 1985 Oct 28 - Total (126) 2004 Oct 28 - Total (136) 2023 Oct 28 - Partial (146) 2042 Oct 28 - Penumbral (156)

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).^[2] This lunar eclipse is related to two solar eclipses of Solar Saros 123.

October 23, 1957	November 3, 1975

Notes

^ Hermit Eclipse: Saros cycle 116
^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

External links

1966 Oct 29 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

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[1] Hermit Eclipse: Saros cycle 116

[2] Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

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