Solar Eclipse Prime Page
Annular Solar Eclipse of 2723 Sep 21
Fred Espenak
Introduction
The Annular Solar Eclipse of 2723 Sep 21 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 2723 Sep 21 at 15:48:52 TD (15:10:18 UT1). This is 1.3 days before the Moon reaches apogee. During the eclipse, the Sun is in the constellation Leo. The synodic month in which the eclipse takes place has a Brown Lunation Number of 9904.
The eclipse belongs to Saros 175 and is number 8 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 annular eclipse is unsual in that it does NOT have a northern path limit. Instead, one edge of the antumbral shadow falls off into space throughout the eclipse. Gamma has a value of 0.9799.
The annular solar eclipse of 2723 Sep 21 is preceded two weeks earlier by a total lunar eclipse on 2723 Sep 07.
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 2313.4 seconds for this eclipse. The uncertainty in ΔT is 542.8 seconds corresponding to a standard error in longitude of the eclipse path of ± 2.27°.
The following links provide maps and data for the eclipse.
- Orthographic Map: Annular Solar Eclipse of 2723 Sep 21 - global map of eclipse visibility
- Google Map: Annular Solar Eclipse of 2723 Sep 21 - interactive map of the eclipse path
- Path Table: Annular Solar Eclipse of 2723 Sep 21 - coordinates of the central line and path limits
- Circumstances Table: Annular Solar Eclipse of 2723 Sep 21 - eclipse times for hundreds of cities
- Saros 175 Table - data for all eclipses in the Saros series
The tables below contain detailed predictions and additional information on the Annular Solar Eclipse of 2723 Sep 21 .