Solar Eclipse Prime Page

Total Solar Eclipse of 1947 May 20

Fred Espenak

Introduction


The Total Solar Eclipse of 1947 May 20 is visible from the following geographic regions:

  • Partial Eclipse: South America, Africa
  • Total Eclipse: Chile, Argentina, Paraguay, Brazil, central Africa

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 1947 May 20 at 13:47:47 TD (13:47:19 UT1). This is 1.7 days before the Moon reaches perigee. During the eclipse, the Sun is in the constellation Taurus. The synodic month in which the eclipse takes place has a Brown Lunation Number of 302.

The eclipse belongs to Saros 127 and is number 54 of 82 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 solar eclipse of 1947 May 20 is a relatively long total eclipse with a duration at greatest eclipse of 05m13s. It has an eclipse magnitude of 1.0557.

The total solar eclipse of 1947 May 20 is followed two weeks later by a partial lunar eclipse on 1947 Jun 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 28.0 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 1947 May 20 .


Eclipse Data: Total Solar Eclipse of 1947 May 20

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 1.05567
Eclipse Obscuration 1.11445
Gamma-0.35279
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1947 May 20 at 13:47:47.0 TD (13:47:19.1 UT1) 2432326.074526
Ecliptic Conjunction 1947 May 20 at 13:44:07.5 TD (13:43:39.5 UT1) 2432326.071985
Equatorial Conjunction 1947 May 20 at 13:35:31.5 TD (13:35:03.5 UT1) 2432326.066013
Geocentric Coordinates of Sun and Moon
1947 May 20 at 13:47:47.0 TD (13:47:19.1 UT1)
Coordinate Sun Moon
Right Ascension03h45m52.5s03h46m20.8s
Declination+19°52'36.9"+19°32'28.8"
Semi-Diameter 15'48.2" 16'25.3"
Eq. Hor. Parallax 08.7" 1°00'16.3"
Geocentric Libration of Moon
Angle Value
l -3.4°
b 0.5°
c -11.1°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 28.0 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 127 (54/82)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Total Solar Eclipse of 1947 May 20

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP111:11:14.511:10:46.629°43.7'S066°41.7'W
First Internal ContactP213:16:38.213:16:10.260°56.2'S069°22.4'W
Last Internal ContactP314:19:13.814:18:45.929°20.7'S042°40.3'E
Last External ContactP416:24:20.816:23:52.804°46.0'N024°51.1'E
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N112:12:52.512:12:24.507°41.8'S091°12.4'W
South Extreme Path Limit 1S112:55:27.012:54:59.068°21.3'S039°02.6'W
North Extreme Path Limit 2N215:22:35.915:22:07.926°50.5'N049°06.6'E
South Extreme Path Limit 2S214:40:35.014:40:07.041°12.0'S030°36.3'E

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Total Solar Eclipse of 1947 May 20

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU112:08:46.712:08:18.736°17.8'S077°35.6'W
First Internal ContactU212:11:01.112:10:33.236°41.3'S077°55.5'W
Last Internal ContactU315:24:38.715:24:10.702°24.7'S037°10.6'E
Last External ContactU415:26:56.715:26:28.701°59.6'S036°45.2'E
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N112:09:40.312:09:12.335°56.5'S078°01.2'W
South Extreme Path Limit 1S112:10:08.512:09:40.537°02.5'S077°30.0'W
North Extreme Path Limit 2N215:26:01.415:25:33.401°36.8'S037°07.2'E
South Extreme Path Limit 2S215:25:32.915:25:05.002°47.3'S036°48.8'E

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Total Solar Eclipse of 1947 May 20

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C112:09:53.912:09:25.936°29.4'S077°45.7'W
Extreme Central Line Limit 2C215:25:47.715:25:19.702°12.0'S036°57.9'E

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 Eclipse13:47:47.013:47:19.100°11.3'N021°28.4'W 69.3° 342.8° 195.6 km05m13.49s
Greatest Duration13:54:24.013:53:56.001°13.5'N019°32.4'W 69.0° 333.3° 196.7 km05m14.19s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Total Solar Eclipse of 1947 May 20

Polynomial Besselian Elements
1947 May 20 at 14:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.22176 -0.29814 19.8794 0.53599 -0.01012 30.9054
1 0.54363 0.18028 0.0084 -0.00009 -0.00009 15.0009
2 0.00004 -0.00011 -0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 -0.00000 - - - -
Tan ƒ1 0.0046195
Tan ƒ2 0.0045965

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 = 14.000

Explanation of Polynomial Besselian Elements

Links for the Total Solar Eclipse of 1947 May 20

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Total Solar Eclipse of 1947 May 20 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 28.0 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.