Solar Eclipse Prime Page
Annular Solar Eclipse of -1718 Oct 21 (1719 Oct 21 BCE)
Fred Espenak
Introduction
The Annular Solar Eclipse of -1718 Oct 21 (1719 Oct 21 BCE) is visible from the geographic regions shown on the map to the right. Click on the map to enlarge it. For an explanation of the features appearing in the map, see Key to Solar Eclipse Maps.
The instant of greatest eclipse takes place on -1718 Oct 21 at 08:32:48 TD (21:29:24 UT1). This is 0.5 days before the Moon reaches apogee. During the eclipse, the Sun is in the constellation Scorpius. The synodic month in which the eclipse takes place has a Brown Lunation Number of -45023.
The eclipse belongs to Saros 6 and is number 54 of 72 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.
The solar eclipse of -1718 Oct 21 is a relatively long annular eclipse with a duration at greatest eclipse of 08m18s. It has an eclipse magnitude of 0.9091.
The annular solar eclipse of -1718 Oct 21 is followed two weeks later by a partial lunar eclipse on -1718 Nov 05.
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., UT1 = TD - ΔT). ΔT has a value of 39803.9 seconds for this eclipse. The uncertainty in ΔT is 2629.7 seconds corresponding to a standard error in longitude of the eclipse path of ± 10.99°.
The following links provide maps and data for the eclipse.
- Orthographic Map: Annular Solar Eclipse of -1718 Oct 21 - global map of eclipse visibility
- Google Map: Annular Solar Eclipse of -1718 Oct 21 - interactive map of the eclipse path
- Path Table: Annular Solar Eclipse of -1718 Oct 21 - coordinates of the central line and path limits
- Circumstances Table: Annular Solar Eclipse of -1718 Oct 21 - eclipse times for hundreds of cities
- Saros 6 Table - data for all eclipses in the Saros series
The tables below contain detailed predictions and additional information on the Annular Solar Eclipse of -1718 Oct 21 .