September 1931 lunar eclipse
A total lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, September 26, 1931, with an umbral magnitude of 1.3208. It was a central lunar eclipses|central lunar eclipse], in which part of the Moon passed through the center of the Earth's shadow. 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 8 hours before apogee, the Moon's apparent diameter was smaller.
This was the last central lunar eclipse of Lunar Saros 126.
Visibility
The eclipse was completely visible over east Africa, eastern Europe, and west, central, south, and southeast Asia, seen rising over west Africa, western Europe, South America, and northeastern North America and setting over east and northeast Asia and Australia.Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 2.40586 |
| Umbral Magnitude | 1.32082 |
| Gamma | −0.26978 |
| Sun Right Ascension | 12h10m06.0s |
| Sun Declination | -01°05'41.6" |
| Sun Semi-Diameter | 15'57.4" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 00h10m34.4s |
| Moon Declination | +00°52'59.0" |
| Moon Semi-Diameter | 14'42.4" |
| Moon Equatorial Horizontal Parallax | 0°53'58.3" |
| ΔT | 24.0 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. The first and last eclipse in this sequence is separated by one synodic month.| September 12 Descending node | September 26 Ascending node | October 11 Descending node |
| Partial solar eclipse Solar Saros 114 | Total lunar eclipse Lunar Saros 126 | Partial solar eclipse Solar Saros 152 |
Related eclipses
Eclipses in 1931
- A total lunar eclipse on April 2.
- A partial solar eclipse on April 18.
- A partial solar eclipse on September 12.A total lunar eclipse on September 26.
- A partial solar eclipse on October 11.
Metonic
- Preceded by: Lunar eclipse of December 8, 1927
- Followed by: Lunar eclipse of July 16, 1935
Tzolkinex
- Preceded by: Lunar eclipse of August 14, 1924
- Followed by: Lunar eclipse of November 7, 1938
Half-Saros
- Preceded by: Solar eclipse of September 21, 1922
- Followed by: Solar eclipse of October 1, 1940
Tritos
- Preceded by: Lunar eclipse of October 27, 1920
- Followed by: Lunar eclipse of August 26, 1942
Lunar Saros 126
- Preceded by: Lunar eclipse of September 15, 1913
- Followed by: Lunar eclipse of October 7, 1949
Inex
- Preceded by: Lunar eclipse of October 17, 1902
- Followed by: Lunar eclipse of September 5, 1960
Triad
- Preceded by: Lunar eclipse of November 24, 1844
- Followed by: Lunar eclipse of July 27, 2018
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 133.| September 21, 1922 | October 1, 1940 |