Solar Eclipse Prime Page

Total Solar Eclipse of 1923 Sep 10

Fred Espenak

Introduction


The Total Solar Eclipse of 1923 Sep 10 is visible from the following geographic regions:

  • Partial Eclipse: North America, Central America, Carribean, northeast South America, east Asia
  • Total Eclipse: U.S., Mexico, Belize

The map to the right depicts the geographic regions of eclipse visibility. 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 1923 Sep 10 at 20:47:29 TD (20:47:06 UT1). This is 2.1 days before the Moon reaches perigee. 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 9.

The eclipse belongs to Saros 143 and is number 18 of 72 eclipses in the series. All eclipses in this series occur at the Moon’s ascending node. The Moon moves southward with respect to the node with each succeeding eclipse in the series and gamma decreases.

The total solar eclipse of 1923 Sep 10 is preceded two weeks earlier by a partial lunar eclipse on 1923 Aug 26.

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 23.4 seconds for this eclipse.

The following links provide maps and data for the eclipse.

The tables below contain detailed predictions and additional information on the Total Solar Eclipse of 1923 Sep 10 .


Eclipse Data: Total Solar Eclipse of 1923 Sep 10

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 1.04302
Eclipse Obscuration 1.08790
Gamma 0.51493
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1923 Sep 10 at 20:47:29.1 TD (20:47:05.8 UT1) 2423673.366039
Ecliptic Conjunction 1923 Sep 10 at 20:52:49.7 TD (20:52:26.3 UT1) 2423673.369749
Equatorial Conjunction 1923 Sep 10 at 20:30:34.7 TD (20:30:11.4 UT1) 2423673.354298
Geocentric Coordinates of Sun and Moon
1923 Sep 10 at 20:47:29.1 TD (20:47:05.8 UT1)
Coordinate Sun Moon
Right Ascension11h12m32.0s11h13m08.8s
Declination+05°05'47.3"+05°35'11.3"
Semi-Diameter 15'53.2" 16'20.1"
Eq. Hor. Parallax 08.7" 0°59'57.1"
Geocentric Libration of Moon
Angle Value
l -3.6°
b -0.6°
c 24.4°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 23.4 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 143 (18/72)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Total Solar Eclipse of 1923 Sep 10

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP118:14:41.718:14:18.336°51.5'N171°51.0'E
Last External ContactP423:20:20.423:19:57.002°14.7'N080°31.5'W
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N118:59:38.218:59:14.815°58.6'N162°59.9'E
South Extreme Path Limit 1S122:35:16.222:34:52.818°40.8'S071°10.4'W

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Total Solar Eclipse of 1923 Sep 10

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU119:16:26.619:16:03.348°02.0'N154°33.2'E
First Internal ContactU219:18:13.219:17:49.848°31.7'N154°00.6'E
Last Internal ContactU322:16:55.222:16:31.813°59.0'N063°35.8'W
Last External ContactU422:18:45.522:18:22.213°28.0'N064°06.4'W
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N119:17:49.419:17:26.048°45.5'N154°03.7'E
South Extreme Path Limit 1S119:16:51.019:16:27.647°48.1'N154°29.9'E
North Extreme Path Limit 2N222:17:20.022:16:56.614°13.5'N063°40.7'W
South Extreme Path Limit 2S222:18:20.222:17:56.813°13.4'N064°01.4'W

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Total Solar Eclipse of 1923 Sep 10

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C119:17:19.819:16:56.548°16.7'N154°17.0'E
Extreme Central Line Limit 2C222:17:50.422:17:27.013°43.4'N063°51.1'W

Explanation of Central Line Extremes Table

Greatest Eclipse and Greatest Duration
Event Time
TD
Time
UT1
Latitude Longitude Sun
Altitude
Sun
Azimuth
Path Width Central
Duration
Greatest Eclipse20:47:29.120:47:05.834°40.4'N121°52.6'W 58.8° 201.0° 166.9 km03m36.89s
Greatest Duration20:47:52.220:47:28.834°35.9'N121°38.3'W 58.8° 201.4° 167.0 km03m36.89s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Total Solar Eclipse of 1923 Sep 10

Polynomial Besselian Elements
1923 Sep 10 at 21:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.26646 0.45633 5.0921 0.53879 -0.00733 135.7253
1 0.54341 -0.16927 -0.0154 -0.00010 -0.00010 15.0049
2 -0.00001 -0.00006 -0.0000 -0.00001 -0.00001 0.0000
3 -0.00001 0.00000 - - - -
Tan ƒ1 0.0046440
Tan ƒ2 0.0046209

At time t1 (decimal hours), each besselian element is evaluated by:

x = x0 + x1*t + x2*t2 + x3*t3 (or x = Σ [xn*tn]; n = 0 to 3)

where: t = t1 - t0 (decimal hours) and t0 = 21.000

Explanation of Polynomial Besselian Elements

Links for the Total Solar Eclipse of 1923 Sep 10

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Total Solar Eclipse of 1923 Sep 10 were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates were calculated with respect to the Moon's Center of Mass. The 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 23.4 seconds for this eclipse.

Acknowledgments

Some of the content on this website is based on the book Thousand Year Canon of Solar Eclipses 1501 to 2500. All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.

Permission is granted to reproduce eclipse data when accompanied by a link to this page and an acknowledgment:

"Eclipse Predictions by Fred Espenak, www.EclipseWise.com"

The use of diagrams and maps is permitted provided that they are NOT altered (except for re-sizing) and the embedded credit line is NOT removed or covered.