Solar Eclipse Prime Page

Annular Solar Eclipse of 1966 May 20

Fred Espenak

Introduction


The Annular Solar Eclipse of 1966 May 20 is visible from the following geographic regions:

  • Partial Eclipse: Europe, north Africa, Asia
  • Annular Eclipse: Guinea, Mali, Algeria, Libya, Greece, Turkey, Russia, China

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 1966 May 20 at 09:39:02 TD (09:38:25 UT1). This is 6.9 days after the Moon reaches apogee. 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 537.

The eclipse belongs to Saros 137 and is number 33 of 70 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 1966 May 20 is a very short annular eclipse with a duration at greatest eclipse of 00m05s. It has an eclipse magnitude of 0.9992.

The annular solar eclipse of 1966 May 20 is preceded two weeks earlier by a penumbral lunar eclipse on 1966 May 04.

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 36.9 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 1966 May 20 .


Eclipse Data: Annular Solar Eclipse of 1966 May 20

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 0.99915
Eclipse Obscuration 0.99830
Gamma 0.34672
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1966 May 20 at 09:39:01.6 TD (09:38:24.7 UT1) 2439265.901675
Ecliptic Conjunction 1966 May 20 at 09:42:51.0 TD (09:42:14.2 UT1) 2439265.904331
Equatorial Conjunction 1966 May 20 at 09:51:45.8 TD (09:51:09.0 UT1) 2439265.910521
Geocentric Coordinates of Sun and Moon
1966 May 20 at 09:39:01.6 TD (09:38:24.7 UT1)
Coordinate Sun Moon
Right Ascension03h46m47.1s03h46m20.7s
Declination+19°55'23.3"+20°14'08.1"
Semi-Diameter 15'48.2" 15'33.4"
Eq. Hor. Parallax 08.7" 0°57'05.7"
Geocentric Libration of Moon
Angle Value
l -5.2°
b -0.4°
c -11.1°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 36.9 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 137 (33/70)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1966 May 20

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP106:50:51.206:50:14.305°06.8'S011°36.0'W
First Internal ContactP209:07:24.309:06:47.430°21.3'N059°50.9'W
Last Internal ContactP310:10:21.810:09:44.961°34.0'N158°41.7'E
Last External ContactP412:27:00.212:26:23.429°15.0'N094°13.6'E
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N108:53:54.808:53:17.942°20.1'N063°29.8'W
South Extreme Path Limit 1S107:39:46.007:39:09.127°51.2'S014°39.3'W
North Extreme Path Limit 2N210:23:46.210:23:09.468°42.0'N178°15.8'W
South Extreme Path Limit 2S211:38:21.611:37:44.806°34.3'N097°03.5'E

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1966 May 20

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU107:54:07.807:53:31.001°46.6'N029°55.2'W
First Internal ContactU207:55:14.907:54:38.101°58.0'N030°16.1'W
Last Internal ContactU311:22:42.311:22:05.436°06.6'N113°55.2'E
Last External ContactU411:23:43.511:23:06.635°56.7'N113°34.2'E
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N107:54:57.507:54:20.602°08.5'N030°15.5'W
South Extreme Path Limit 1S107:54:25.307:53:48.401°36.1'N029°55.8'W
North Extreme Path Limit 2N211:22:58.111:22:21.236°15.8'N113°56.6'E
South Extreme Path Limit 2S211:23:27.611:22:50.835°47.5'N113°32.9'E

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Annular Solar Eclipse of 1966 May 20

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C107:54:41.407:54:04.501°52.3'N030°05.7'W
Extreme Central Line Limit 2C211:23:12.911:22:36.036°01.6'N113°44.7'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 Eclipse09:39:01.609:38:24.739°12.0'N026°17.2'E 69.5° 157.9° 3.2 km00m04.65s
Greatest Duration07:54:41.407:54:04.501°52.3'N030°05.7'W 0.0° 70.1° 68.5 km00m58.88s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Annular Solar Eclipse of 1966 May 20

Polynomial Besselian Elements
1966 May 20 at 10:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.07033 0.38836 19.9253 0.55067 0.00449 330.8998
1 0.51234 0.16915 0.0084 -0.00013 -0.00013 15.0007
2 0.00006 -0.00014 -0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 -0.00000 - - - -
Tan ƒ1 0.0046204
Tan ƒ2 0.0045974

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 = 10.000

Explanation of Polynomial Besselian Elements

Links for the Annular Solar Eclipse of 1966 May 20

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Annular Solar Eclipse of 1966 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 36.9 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.