Solar Eclipse Prime Page
Annular Solar Eclipse of -0171 Sep 18 (0172 Sep 18 BCE)
Fred Espenak
Introduction
The Annular Solar Eclipse of -0171 Sep 18 (0172 Sep 18 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 -0171 Sep 18 at 01:15:55 TD (21:49:50 UT1). This is 2.1 days after the Moon reaches apogee. During the eclipse, the Sun is in the constellation Virgo. The synodic month in which the eclipse takes place has a Brown Lunation Number of -25890.
The eclipse belongs to Saros 80 and is number 10 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.
The solar eclipse of -0171 Sep 18 is a relatively long annular eclipse with a duration at greatest eclipse of 06m40s. It has an eclipse magnitude of 0.9233.
The annular solar eclipse of -0171 Sep 18 is preceded two weeks earlier by a partial lunar eclipse on -0171 Sep 03.
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 12365.2 seconds for this eclipse. The uncertainty in ΔT is 316.9 seconds corresponding to a standard error in longitude of the eclipse path of ± 1.32°.
The following links provide maps and data for the eclipse.
- Orthographic Map: Annular Solar Eclipse of -0171 Sep 18 - global map of eclipse visibility
- Google Map: Annular Solar Eclipse of -0171 Sep 18 - interactive map of the eclipse path
- Path Table: Annular Solar Eclipse of -0171 Sep 18 - coordinates of the central line and path limits
- Circumstances Table: Annular Solar Eclipse of -0171 Sep 18 - eclipse times for hundreds of cities
- Saros 80 Table - data for all eclipses in the Saros series
The tables below contain detailed predictions and additional information on the Annular Solar Eclipse of -0171 Sep 18 .