Total Lunar Eclipse of 1931 Sep 26
Fred Espenak
Key to Lunar Eclipse Figure (below)
Introduction
The Total Lunar Eclipse of 1931 Sep 26 is visible from the following geographic regions:
- eastern Americas, Europe, Africa, Asia, Australia
The diagram to the right depicts the Moon's path with respect to Earth's umbral and penumbral shadows. Below it is a map showing the geographic regions of eclipse visibility. Click on the figure to enlarge it. For an explanation of the features appearing in the figure, see Key to Lunar Eclipse Figures.
The instant of greatest eclipse takes place on 1931 Sep 26 at 19:48:29 TD (19:48:05 UT1). This is 0.3 days before the Moon reaches apogee. During the eclipse, the Moon is in the constellation Pisces. The synodic month in which the eclipse takes place has a Brown Lunation Number of 108.
The eclipse belongs to Saros 126 and is number 40 of 70 eclipses in the series. All eclipses in this series occur at the Moons ascending node. The Moon moves southward with respect to the node with each succeeding eclipse in the series and gamma decreases.
This total eclipse is central meaning the Moons disk actually passes through the axis of Earths umbral shadow. It has an umbral eclipse magnitude of 1.3208, and Gamma has a value of -0.2698. Because they are so deep, such eclipses typically have the longest total phases. In this case, the duration of totality lasts 84.2 minutes.
The total lunar eclipse of 1931 Sep 26 is preceded two weeks earlier by a partial solar eclipse on 1931 Sep 12, and it is followed two weeks later by a partial solar eclipse on 1931 Oct 11.
These eclipses all take place during a single eclipse season.
The eclipse predictions are given in both Terrestrial Dynamical Time (TD) and Universal Time (UT1). The parameter ΔT is used to convert between these two times (i.e., TD = UT1 + ΔT). ΔT has a value of 24.0 seconds for this eclipse.
The following links provide maps and data for the eclipse.
- Detailed Lunar Eclipse Figure - eclipse geometry diagram and map of eclipse visibility (Key to Figure)
- Saros 126 Table - data for all eclipses in the Saros series
The tables below contain detailed predictions and additional information on the Total Lunar Eclipse of 1931 Sep 26 .