Solar Eclipse Prime Page

Annular Solar Eclipse of 1950 Mar 18

Fred Espenak

Introduction


The Annular Solar Eclipse of 1950 Mar 18 is visible from the following geographic regions:

  • Partial Eclipse: south Africa, south South America, Antarctica
  • Annular Eclipse: Antarctica

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 Mar 18 at 15:32:01 TD (15:31:32 UT1). This is 3.8 days before the Moon reaches apogee. During the eclipse, the Sun is in the constellation Pisces. The synodic month in which the eclipse takes place has a Brown Lunation Number of 337.

The eclipse belongs to Saros 119 and is number 62 of 71 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.

This annular eclipse is very unusual in that it is NON-CENTRAL and does NOT have a central line nor a southern path limit. Instead , over half of the antumbral shadow falls off into space throughout the eclipse. Gamma has a value of -0.9988.

The annular solar eclipse of 1950 Mar 18 is followed two weeks later by a total lunar eclipse on 1950 Apr 02.

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 29.2 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 Annular Solar Eclipse of 1950 Mar 18 .


Eclipse Data: Annular Solar Eclipse of 1950 Mar 18

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 0.96198
Eclipse Obscuration -
Gamma-0.99880
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1950 Mar 18 at 15:32:01.3 TD (15:31:32.1 UT1) 2433359.146900
Ecliptic Conjunction 1950 Mar 18 at 15:20:29.9 TD (15:20:00.8 UT1) 2433359.138898
Equatorial Conjunction 1950 Mar 18 at 14:27:07.9 TD (14:26:38.8 UT1) 2433359.101838
Geocentric Coordinates of Sun and Moon
1950 Mar 18 at 15:32:01.3 TD (15:31:32.1 UT1)
Coordinate Sun Moon
Right Ascension23h50m43.1s23h52m29.2s
Declination-01°00'22.1"-01°48'04.0"
Semi-Diameter 16'03.9" 14'55.6"
Eq. Hor. Parallax 08.8" 0°54'47.0"
Geocentric Libration of Moon
Angle Value
l 3.3°
b 1.2°
c -21.9°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 29.2 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 119 (62/71)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1950 Mar 18

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP113:11:15.913:10:46.768°50.4'S108°19.2'W
Last External ContactP417:53:16.217:52:47.010°35.0'S004°01.9'E
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N113:46:12.113:45:42.954°51.5'S115°50.2'W
South Extreme Path Limit 1S117:18:12.617:17:43.403°32.0'N012°33.5'E

Non-Central Annular Solar Eclipse

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1950 Mar 18

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU115:09:02.715:08:33.672°09.3'S048°03.5'E
Last External ContactU415:55:41.215:55:12.049°39.7'S034°25.8'E
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N115:09:17.115:08:48.072°16.1'S048°01.1'E
South Extreme Path Limit 1S115:55:27.015:54:57.949°32.4'S034°29.0'E

Non-Central Annular Solar Eclipse

Explanation of Umbral Shadow Contacts and Extremes Tables

Non-Central Annular Solar Eclipse

Explanation of Central Line Extremes Table

Non-Central Annular Solar Eclipse

Polynomial Besselian Elements: Annular Solar Eclipse of 1950 Mar 18

Polynomial Besselian Elements
1950 Mar 18 at 16:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.69434 -0.75679 -0.9966 0.56730 0.02104 57.9458
1 0.44855 0.24932 0.0159 0.00006 0.00006 15.0041
2 -0.00004 0.00003 -0.0000 -0.00001 -0.00001 0.0000
3 -0.00001 -0.00000 - - - -
Tan ƒ1 0.0046976
Tan ƒ2 0.0046742

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 = 16.000

Explanation of Polynomial Besselian Elements

Links for the Annular Solar Eclipse of 1950 Mar 18

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Annular Solar Eclipse of 1950 Mar 18 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 29.2 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.