Solar Eclipse Prime Page

Total Solar Eclipse of 1950 Sep 12

Fred Espenak

Introduction


The Total Solar Eclipse of 1950 Sep 12 is visible from the following geographic regions:

  • Partial Eclipse: northeast Asia, northwest North America
  • Total Eclipse: Russia

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 1950 Sep 12 at 03:38:47 TD (03:38:18 UT1). This is 3.2 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 343.

The eclipse belongs to Saros 124 and is number 51 of 73 eclipses in the series. All eclipses in this series occur at the Moon’s descending node. The Moon moves northward with respect to the node with each succeeding eclipse in the series and gamma increases.

The total solar eclipse of 1950 Sep 12 is followed two weeks later by a total lunar eclipse on 1950 Sep 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 29.4 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 1950 Sep 12 .


Eclipse Data: Total Solar Eclipse of 1950 Sep 12

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 1.01818
Eclipse Obscuration 1.03668
Gamma 0.89030
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1950 Sep 12 at 03:38:46.9 TD (03:38:17.5 UT1) 2433536.651592
Ecliptic Conjunction 1950 Sep 12 at 03:29:21.7 TD (03:28:52.4 UT1) 2433536.645051
Equatorial Conjunction 1950 Sep 12 at 02:46:30.5 TD (02:46:01.2 UT1) 2433536.615291
Geocentric Coordinates of Sun and Moon
1950 Sep 12 at 03:38:46.9 TD (03:38:17.5 UT1)
Coordinate Sun Moon
Right Ascension11h18m51.6s11h20m32.5s
Declination+04°25'42.1"+05°11'38.3"
Semi-Diameter 15'53.5" 16'04.0"
Eq. Hor. Parallax 08.7" 0°58'57.9"
Geocentric Libration of Moon
Angle Value
l -4.2°
b -1.1°
c 21.6°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 29.4 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 124 (51/73)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Total Solar Eclipse of 1950 Sep 12

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP101:23:43.101:23:13.863°44.9'N059°14.2'E
Last External ContactP405:54:06.605:53:37.306°34.4'N178°46.5'W
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N101:56:13.301:55:44.049°00.2'N055°04.1'E
South Extreme Path Limit 1S105:21:31.405:21:02.008°22.8'S171°47.1'W

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Total Solar Eclipse of 1950 Sep 12

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU102:50:01.602:49:32.385°16.2'N063°31.4'W
First Internal ContactU202:51:19.402:50:50.085°01.4'N070°31.5'W
Last Internal ContactU304:26:44.104:26:14.834°44.5'N154°21.7'W
Last External ContactU404:28:06.704:27:37.434°05.3'N154°46.9'W
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N102:51:15.502:50:46.285°00.4'N070°52.8'W
South Extreme Path Limit 1S102:50:05.502:49:36.285°16.9'N063°06.9'W
North Extreme Path Limit 2N204:26:48.204:26:18.834°46.9'N154°22.5'W
South Extreme Path Limit 2S204:28:02.504:27:33.134°02.9'N154°46.1'W

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Total Solar Eclipse of 1950 Sep 12

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C102:50:40.302:50:10.985°09.3'N067°04.8'W
Extreme Central Line Limit 2C204:27:25.604:26:56.334°24.8'N154°34.4'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 Eclipse03:38:46.903:38:17.554°48.4'N172°07.9'E 26.7° 235.6° 134.4 km01m13.58s
Greatest Duration03:40:16.303:39:47.054°09.0'N172°39.2'E 26.7° 236.7° 135.4 km01m13.60s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Total Solar Eclipse of 1950 Sep 12

Polynomial Besselian Elements
1950 Sep 12 at 04:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.60059 0.68628 4.4211 0.54331 -0.00283 240.8678
1 0.49031 -0.26821 -0.0152 -0.00012 -0.00012 15.0048
2 -0.00003 -0.00007 -0.0000 -0.00001 -0.00001 0.0000
3 -0.00001 0.00000 - - - -
Tan ƒ1 0.0046458
Tan ƒ2 0.0046227

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 = 4.000

Explanation of Polynomial Besselian Elements

Links for the Total Solar Eclipse of 1950 Sep 12

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Total Solar Eclipse of 1950 Sep 12 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 29.4 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.