Solar Eclipse Prime Page

Total Solar Eclipse of 1985 Nov 12

Fred Espenak

Introduction


The Total Solar Eclipse of 1985 Nov 12 is visible from the following geographic regions:

  • Partial Eclipse: south South America, Antarctica
  • Total Eclipse: south Pacific, 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 1985 Nov 12 at 14:11:27 TD (14:10:32 UT1). This is 0.1 days after the Moon reaches perigee. During the eclipse, the Sun is in the constellation Libra. The synodic month in which the eclipse takes place has a Brown Lunation Number of 778.

The eclipse belongs to Saros 152 and is number 11 of 70 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 1985 Nov 12 is preceded two weeks earlier by a total lunar eclipse on 1985 Oct 28.

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 54.8 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 1985 Nov 12 .


Eclipse Data: Total Solar Eclipse of 1985 Nov 12

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 1.03880
Eclipse Obscuration 1.07910
Gamma-0.97948
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1985 Nov 12 at 14:11:26.9 TD (14:10:32.1 UT1) 2446382.090649
Ecliptic Conjunction 1985 Nov 12 at 14:21:15.4 TD (14:20:20.6 UT1) 2446382.097461
Equatorial Conjunction 1985 Nov 12 at 14:50:17.6 TD (14:49:22.8 UT1) 2446382.117625
Geocentric Coordinates of Sun and Moon
1985 Nov 12 at 14:11:26.9 TD (14:10:32.1 UT1)
Coordinate Sun Moon
Right Ascension15h10m46.7s15h09m15.4s
Declination-17°46'51.7"-18°42'51.3"
Semi-Diameter 16'09.6" 16'44.5"
Eq. Hor. Parallax 08.9" 1°01'26.6"
Geocentric Libration of Moon
Angle Value
l 0.2°
b 1.3°
c 14.2°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 54.8 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 152 (11/70)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Total Solar Eclipse of 1985 Nov 12

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP112:09:38.712:08:43.917°40.2'S101°59.5'W
Last External ContactP416:12:59.316:12:04.556°16.4'S051°46.5'E
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N112:32:55.112:32:00.305°10.1'S103°36.9'W
South Extreme Path Limit 1S115:49:45.615:48:50.844°51.1'S047°27.4'E

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Total Solar Eclipse of 1985 Nov 12

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU113:47:16.413:46:21.651°46.1'S144°33.3'W
First Internal ContactU213:57:51.713:56:56.956°42.3'S152°24.8'W
Last Internal ContactU314:24:37.214:23:42.467°46.3'S178°25.2'E
Last External ContactU414:35:12.614:34:17.970°38.7'S161°32.5'E
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N113:47:21.713:46:26.951°42.8'S144°31.6'W
South Extreme Path Limit 1S113:57:48.813:56:54.056°44.1'S152°26.2'W
North Extreme Path Limit 2N214:35:07.414:34:12.670°40.1'S161°23.7'E
South Extreme Path Limit 2S214:24:40.214:23:45.467°45.1'S178°28.8'E

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Total Solar Eclipse of 1985 Nov 12

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C113:51:51.313:50:56.553°54.6'S147°46.8'W
Extreme Central Line Limit 2C214:30:37.714:29:42.969°33.5'S169°14.6'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 Eclipse14:11:26.914:10:32.168°33.1'S142°51.4'W 10.8° 111.3° 690.1 km01m58.71s
Greatest Duration14:11:16.814:10:22.068°27.9'S142°29.5'W 10.8° 111.2° 690.8 km01m58.71s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Total Solar Eclipse of 1985 Nov 12

Polynomial Besselian Elements
1985 Nov 12 at 14:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 -0.45632 -0.87380 -17.7767 0.53679 -0.00932 33.9547
1 0.54434 -0.21001 -0.0107 0.00001 0.00001 15.0000
2 0.00007 0.00017 0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 0.00000 - - - -
Tan ƒ1 0.0047240
Tan ƒ2 0.0047005

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 1985 Nov 12

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Total Solar Eclipse of 1985 Nov 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 54.8 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.