November 1975 lunar eclipse
A total lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, November 18, 1975, with an umbral magnitude of 1.0642. 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 about 4.9 days after apogee, the Moon's apparent diameter was smaller.
Visibility
The eclipse was completely visible over Africa, Europe, and the western half of Asia, seen rising over North and South America and setting over east and southeast Asia, and Australia.Eclipse details
Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 2.13521 |
| Umbral Magnitude | 1.06421 |
| Gamma | −0.41343 |
| Sun Right Ascension | 15h34m32.1s |
| Sun Declination | -19°14'45.6" |
| Sun Semi-Diameter | 16'11.0" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 03h34m45.4s |
| Moon Declination | +18°52'03.2" |
| Moon Semi-Diameter | 15'06.6" |
| Moon Equatorial Horizontal Parallax | 0°55'27.2" |
| ΔT | 46.4 s |
Eclipse season
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months 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.| November 3 Ascending node | November 18 Descending node |
| Partial solar eclipse Solar Saros 123 | Total lunar eclipse Lunar Saros 135 |
Related eclipses
Eclipses in 1975
- A partial solar eclipse on May 11.
- A total lunar eclipse on May 25.
- A partial solar eclipse on November 3.
- '''A total lunar eclipse on November 18.'''
Metonic
- Preceded by: Lunar eclipse of January 30, 1972
- Followed by: Lunar eclipse of September 6, 1979
Tzolkinex
- Preceded by: Lunar eclipse of October 6, 1968
- Followed by: Lunar eclipse of December 30, 1982
Half-Saros
- Preceded by: Solar eclipse of November 12, 1966
- Followed by: Solar eclipse of November 22, 1984
Tritos
- Preceded by: Lunar eclipse of December 19, 1964
- Followed by: Lunar eclipse of October 17, 1986
Lunar Saros 135
- Preceded by: Lunar eclipse of November 7, 1957
- Followed by: Lunar eclipse of November 29, 1993
Inex
- Preceded by: Lunar eclipse of December 8, 1946
- Followed by: Lunar eclipse of October 28, 2004
Triad
- Preceded by: Lunar eclipse of January 17, 1889
- Followed by: Lunar eclipse of September 18, 2062
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days. This lunar eclipse is related to two total solar eclipses of Solar Saros 142.| November 12, 1966 | November 22, 1984 |