Total Lunar Eclipse of 2018 Jul 27
The Total Lunar Eclipse of 2018 Jul 27 is visible from the following geographic regions:
- South America, 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 2018 Jul 27 at 20:22:54 TD (20:21:45 UT1). This is 0.6 days after the Moon reaches apogee. During the eclipse, the Moon is in the constellation Capricornus. The synodic month in which the eclipse takes place has a Brown Lunation Number of 1182.
The eclipse belongs to Saros 129 and is number 38 of 71 eclipses in the series. All eclipses in this series occur at the Moons descending node. The Moon moves northward with respect to the node with each succeeding eclipse in the series and gamma increases.
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 1.6087, and Gamma has a value of 0.1168. Because they are so deep, such eclipses typically have the longest total phases. In this case, the duration of totality lasts 103.0 minutes. That qualifies the eclipse as a member of a select class of exceptionally long total eclipses with durations exceeding 100 minutes.
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 68.9 seconds for this eclipse.
The following links provide maps and data for the eclipse.
- Eclipse Figure - eclipse geometry diagram and map of eclipse visibility
- Saros 129 Table - data for all eclipses in the Saros series
The tables below contain detailed predictions and additional information on the Total Lunar Eclipse of 2018 Jul 27 .