October 1967 lunar eclipse
Template:Short description Template:Infobox lunar eclipse A total lunar eclipse occurred at the Moon’s ascending node of orbit on Wednesday, October 18, 1967,[1] with an umbral magnitude of 1.1426. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring only about 22 hours before apogee (on October 19, 1967, at 8:30 UTC), the Moon's apparent diameter was smaller.[2]
This lunar eclipse was the second of a tetrad, with four total lunar eclipses in series, the others being on April 24, 1967; April 13, 1968; and October 6, 1968.
Visibility
The eclipse was completely visible over northeast Asia, western North America, and the Pacific Ocean, seen rising over Asia and Australia and setting over eastern North America and South America.[3]
| File:Lunar eclipse from moon-1967Oct18.png File:Lunar eclipse chart close-1967Oct18.png |
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 | 2.23368 |
| Umbral Magnitude | 1.14258 |
| Gamma | −0.36529 |
| Sun Right Ascension | 13h30m10.8s |
| Sun Declination | -09°26'26.5" |
| Sun Semi-Diameter | 16'03.3" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 01h30m47.5s |
| Moon Declination | +09°08'55.1" |
| Moon Semi-Diameter | 14'42.8" |
| Moon Equatorial Horizontal Parallax | 0°54'00.0" |
| ΔT | 38.1 s |
Eclipse season
Script error: No such module "Labelled list hatnote". 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 18 Ascending node (full moon) |
November 2 Descending node (new moon) |
|---|---|
| File:Lunar eclipse chart close-1967Oct18.png | File:SE1967Nov02T.png |
| Total lunar eclipse Lunar Saros 126 |
Total solar eclipse Solar Saros 152 |
Related eclipses
Eclipses in 1967
- A total lunar eclipse on April 24.
- A partial solar eclipse on May 9.
- A total lunar eclipse on October 18.
- A total solar eclipse on November 2.
Metonic
- Preceded by: Lunar eclipse of December 30, 1963
- Followed by: Lunar eclipse of August 6, 1971
Tzolkinex
- Preceded by: Lunar eclipse of September 5, 1960
- Followed by: Lunar eclipse of November 29, 1974
Half-Saros
- Preceded by: Solar eclipse of October 12, 1958
- Followed by: Solar eclipse of October 23, 1976
Tritos
- Preceded by: Lunar eclipse of November 18, 1956
- Followed by: Lunar eclipse of September 16, 1978
Lunar Saros 126
- Preceded by: Lunar eclipse of October 7, 1949
- Followed by: Lunar eclipse of October 28, 1985
Inex
- Preceded by: Lunar eclipse of November 7, 1938
- Followed by: Lunar eclipse of September 27, 1996
Triad
- Preceded by: Lunar eclipse of December 16, 1880
- Followed by: Lunar eclipse of August 18, 2054
Lunar eclipses of 1966–1969
This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]
The penumbral lunar eclipse on August 27, 1969 occurs in the next lunar year eclipse set.
Metonic series
This eclipse is the third of four Metonic cycle lunar eclipses on the same date, April 23–24, each separated by 19 years:
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.
| Descending node | Ascending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date | Type | Saros | Date | Type | |
| 111 | 1948 Apr 23 | Partial | 116 | 1948 Oct 18 | Penumbral | |
| File:Lunar eclipse chart close-1948Apr23.png | File:Lunar eclipse chart close-1948Oct18.png | |||||
| 121 | 1967 Apr 24 | Total | 126 | 1967 Oct 18 | Total | |
| File:Lunar eclipse chart close-1967Apr24.png | File:Lunar eclipse chart close-1967Oct18.png | |||||
| 131 | 1986 Apr 24 | Total | 136 | 1986 Oct 17 | Total | |
| File:Lunar eclipse chart close-1986Apr24.png | File:Lunar eclipse chart close-1986Oct17.png | |||||
| 141 | 2005 Apr 24 | Penumbral | 146 | 2005 Oct 17 | Partial | |
| File:Lunar eclipse chart close-05apr24.png | File:Lunar eclipse chart close-2005Oct17.png | |||||
Saros 126
Template:Lunar Saros series 126
Tritos series
Template:Tritos eclipse set info
Inex series
Template:Lunar Inex series September 2025
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[6] This lunar eclipse is related to two total solar eclipses of Solar Saros 133.
| October 12, 1958 | October 23, 1976 |
|---|---|
| File:SE1958Oct12T.png | File:SE1976Oct23T.png |
See also
Notes
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- ↑ Script error: No such module "citation/CS1".
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- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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External links
- 1967 Oct 18 chart Eclipse Predictions by Fred Espenak, NASA/GSFC