Solar Eclipse Prime Page

Total Solar Eclipse of 1958 Oct 12

Fred Espenak

Introduction


The Total Solar Eclipse of 1958 Oct 12 is visible from the following geographic regions:

  • Partial Eclipse: Australia, New Zealand, Pacific, southwest South America
  • Total Eclipse: Pacific, Chile, Argentina

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 1958 Oct 12 at 20:55:28 TD (20:54:55 UT1). This is 0.2 days before the Moon reaches perigee. During the eclipse, the Sun is in the constellation Virgo. The synodic month in which the eclipse takes place has a Brown Lunation Number of 443.

The eclipse belongs to Saros 133 and is number 42 of 72 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 1958 Oct 12 is a relatively long total eclipse with a duration at greatest eclipse of 05m11s. It has an eclipse magnitude of 1.0608.

The total solar eclipse of 1958 Oct 12 is followed two weeks later by a penumbral lunar eclipse on 1958 Oct 27.

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 32.6 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 1958 Oct 12 .


Eclipse Data: Total Solar Eclipse of 1958 Oct 12

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 1.06084
Eclipse Obscuration 1.12539
Gamma-0.29506
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1958 Oct 12 at 20:55:28.0 TD (20:54:55.4 UT1) 2436489.371475
Ecliptic Conjunction 1958 Oct 12 at 20:52:27.4 TD (20:51:54.9 UT1) 2436489.369385
Equatorial Conjunction 1958 Oct 12 at 21:04:31.8 TD (21:03:59.3 UT1) 2436489.377769
Geocentric Coordinates of Sun and Moon
1958 Oct 12 at 20:55:28.0 TD (20:54:55.4 UT1)
Coordinate Sun Moon
Right Ascension13h10m12.6s13h09m51.7s
Declination-07°27'01.0"-07°44'19.9"
Semi-Diameter 16'01.8" 16'43.7"
Eq. Hor. Parallax 08.8" 1°01'23.7"
Geocentric Libration of Moon
Angle Value
l -0.3°
b 0.4°
c 23.8°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 32.6 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 133 (42/72)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Total Solar Eclipse of 1958 Oct 12

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP118:20:31.518:19:58.905°33.1'N172°22.2'E
First Internal ContactP220:18:33.120:18:00.522°43.4'S138°59.8'E
Last Internal ContactP321:32:08.721:31:36.155°41.0'S045°12.8'W
Last External ContactP423:30:19.623:29:47.127°36.0'S081°53.1'W
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N119:12:25.719:11:53.130°21.3'N163°02.6'E
South Extreme Path Limit 1S119:59:55.019:59:22.439°20.1'S140°39.1'E
North Extreme Path Limit 2N222:38:38.022:38:05.402°47.8'S072°31.8'W
South Extreme Path Limit 2S221:50:39.621:50:07.071°31.7'S037°48.7'W

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Total Solar Eclipse of 1958 Oct 12

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU119:15:58.519:15:25.900°19.4'S157°44.1'E
First Internal ContactU219:18:23.519:17:50.900°43.2'S157°04.8'E
Last Internal ContactU322:32:25.522:31:52.933°50.8'S066°17.9'W
Last External ContactU422:34:51.122:34:18.533°27.0'S066°58.8'W
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N119:16:46.419:16:13.800°09.0'N157°36.5'E
South Extreme Path Limit 1S119:17:36.719:17:04.101°11.5'S157°12.9'E
North Extreme Path Limit 2N222:34:03.322:33:30.732°58.7'S066°52.2'W
South Extreme Path Limit 2S222:33:12.322:32:39.734°19.0'S066°24.2'W

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Total Solar Eclipse of 1958 Oct 12

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C119:17:11.019:16:38.400°31.2'S157°24.6'E
Extreme Central Line Limit 2C222:33:38.322:33:05.733°38.8'S066°38.4'W

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 Eclipse20:55:28.020:54:55.423°59.6'S142°32.2'W 72.7° 17.9° 208.8 km05m10.79s
Greatest Duration20:57:26.020:56:53.524°20.1'S141°45.0'W 72.7° 14.0° 208.6 km05m10.84s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Total Solar Eclipse of 1958 Oct 12

Polynomial Besselian Elements
1958 Oct 12 at 21:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 -0.04221 -0.29534 -7.4507 0.53489 -0.01121 138.3694
1 0.55896 -0.16694 -0.0152 -0.00001 -0.00001 15.0039
2 0.00002 0.00006 0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 0.00000 - - - -
Tan ƒ1 0.0046857
Tan ƒ2 0.0046624

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 = 21.000

Explanation of Polynomial Besselian Elements

Links for the Total Solar Eclipse of 1958 Oct 12

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Total Solar Eclipse of 1958 Oct 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 32.6 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.