Solar Eclipse Prime Page

Annular Solar Eclipse of 1983 Dec 04

Fred Espenak

Introduction


The Annular Solar Eclipse of 1983 Dec 04 is visible from the following geographic regions:

  • Partial Eclipse: ns South America, Africa, south Europe
  • Annular Eclipse: Gabon, Congo, D. R. Congo, Uganda, Kenya, Ethiopia, Somalia

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 1983 Dec 04 at 12:31:15 TD (12:30:21 UT1). This is 6.5 days before the Moon reaches apogee. During the eclipse, the Sun is in the constellation Ophiuchus. The synodic month in which the eclipse takes place has a Brown Lunation Number of 754.

The eclipse belongs to Saros 132 and is number 44 of 71 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 annular solar eclipse of 1983 Dec 04 is followed two weeks later by a penumbral lunar eclipse on 1983 Dec 20.

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 53.7 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 1983 Dec 04 .


Eclipse Data: Annular Solar Eclipse of 1983 Dec 04

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 0.96656
Eclipse Obscuration 0.93425
Gamma 0.40150
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1983 Dec 04 at 12:31:15.1 TD (12:30:21.5 UT1) 2445673.021082
Ecliptic Conjunction 1983 Dec 04 at 12:26:45.1 TD (12:25:51.5 UT1) 2445673.017957
Equatorial Conjunction 1983 Dec 04 at 12:20:29.0 TD (12:19:35.4 UT1) 2445673.013604
Geocentric Coordinates of Sun and Moon
1983 Dec 04 at 12:31:15.1 TD (12:30:21.5 UT1)
Coordinate Sun Moon
Right Ascension16h41m03.6s16h41m26.3s
Declination-22°12'07.8"-21°50'01.7"
Semi-Diameter 16'13.7" 15'27.6"
Eq. Hor. Parallax 08.9" 0°56'44.4"
Geocentric Libration of Moon
Angle Value
l 5.0°
b -0.4°
c 6.1°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 53.7 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 132 (44/71)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1983 Dec 04

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP109:41:52.509:40:58.926°14.1'N046°08.9'W
First Internal ContactP212:11:46.812:10:53.165°48.6'N029°54.6'W
Last Internal ContactP312:50:58.312:50:04.647°48.6'N048°13.6'E
Last External ContactP415:20:48.915:19:55.301°26.0'N036°57.1'E
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N111:57:18.311:56:24.767°42.0'N007°18.6'W
South Extreme Path Limit 1S110:51:02.610:50:08.904°29.6'N073°11.7'W
North Extreme Path Limit 2N213:05:36.013:04:42.354°04.8'N037°02.1'E
South Extreme Path Limit 2S214:11:25.614:10:31.920°25.3'S063°37.6'E

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1983 Dec 04

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU110:46:44.410:45:50.833°49.6'N058°05.5'W
First Internal ContactU210:50:04.110:49:10.434°26.1'N058°32.8'W
Last Internal ContactU314:12:31.014:11:37.309°53.9'N050°31.3'E
Last External ContactU414:15:56.614:15:02.909°14.9'N049°56.3'E
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N110:48:48.010:47:54.434°52.3'N057°57.3'W
South Extreme Path Limit 1S110:48:01.610:47:07.933°23.0'N058°41.0'W
North Extreme Path Limit 2N214:13:49.614:12:55.910°22.1'N049°59.8'E
South Extreme Path Limit 2S214:14:36.914:13:43.208°46.5'N050°28.2'E

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Annular Solar Eclipse of 1983 Dec 04

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C110:48:24.110:47:30.434°07.6'N058°19.3'W
Extreme Central Line Limit 2C214:14:13.914:13:20.209°34.1'N050°13.9'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 Eclipse12:31:15.112:30:21.500°53.6'N004°57.6'W 66.3° 192.4° 131.2 km04m00.66s
Greatest Duration12:51:38.912:50:45.200°57.5'S000°27.7'E 63.9° 214.5° 134.5 km04m02.65s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Annular Solar Eclipse of 1983 Dec 04

Polynomial Besselian Elements
1983 Dec 04 at 13:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.34179 0.33128 -22.2057 0.56005 0.01383 17.4902
1 0.51896 -0.12363 -0.0054 0.00011 0.00011 14.9972
2 0.00000 0.00014 0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 0.00000 - - - -
Tan ƒ1 0.0047448
Tan ƒ2 0.0047212

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 = 13.000

Explanation of Polynomial Besselian Elements

Links for the Annular Solar Eclipse of 1983 Dec 04

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Annular Solar Eclipse of 1983 Dec 04 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 53.7 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.