Solar Eclipse Prime Page

Annular Solar Eclipse of 1958 Apr 19

Fred Espenak

Introduction


The Annular Solar Eclipse of 1958 Apr 19 is visible from the following geographic regions:

  • Partial Eclipse: Asia, East Indies, Pacific
  • Annular Eclipse: Myanmar, Thailand, Laos, Cambodia, Vietnam, China, Japan

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 Apr 19 at 03:27:17 TD (03:26:44 UT1). This is 2.2 days after the Moon reaches apogee. During the eclipse, the Sun is in the constellation Aries. The synodic month in which the eclipse takes place has a Brown Lunation Number of 437.

The eclipse belongs to Saros 128 and is number 55 of 73 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 solar eclipse of 1958 Apr 19 is a relatively long annular eclipse with a duration at greatest eclipse of 07m07s. It has an eclipse magnitude of 0.9408.

The annular solar eclipse of 1958 Apr 19 is preceded two weeks earlier by a penumbral lunar eclipse on 1958 Apr 04, and it is followed two weeks later by a partial lunar eclipse on 1958 May 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 32.4 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 1958 Apr 19 .


Eclipse Data: Annular Solar Eclipse of 1958 Apr 19

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 0.94082
Eclipse Obscuration 0.88515
Gamma 0.27499
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1958 Apr 19 at 03:27:16.7 TD (03:26:44.3 UT1) 2436312.643568
Ecliptic Conjunction 1958 Apr 19 at 03:23:59.6 TD (03:23:27.2 UT1) 2436312.641287
Equatorial Conjunction 1958 Apr 19 at 03:36:02.5 TD (03:35:30.1 UT1) 2436312.649654
Geocentric Coordinates of Sun and Moon
1958 Apr 19 at 03:27:16.7 TD (03:26:44.3 UT1)
Coordinate Sun Moon
Right Ascension01h46m12.4s01h45m56.6s
Declination+10°58'10.3"+11°12'31.2"
Semi-Diameter 15'55.4" 14'45.9"
Eq. Hor. Parallax 08.8" 0°54'11.2"
Geocentric Libration of Moon
Angle Value
l -2.2°
b -0.3°
c -22.4°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 32.4 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 128 (55/73)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1958 Apr 19

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP100:24:41.600:24:09.204°56.8'S084°45.0'E
First Internal ContactP202:47:56.902:47:24.524°09.8'N042°59.2'E
Last Internal ContactP304:06:22.204:05:49.953°32.2'N136°25.2'W
Last External ContactP406:29:44.706:29:12.324°48.5'N177°40.2'E
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N102:27:00.602:26:28.341°39.5'N043°17.5'E
South Extreme Path Limit 1S101:27:36.101:27:03.831°30.0'S074°51.9'E
North Extreme Path Limit 2N204:27:10.504:26:38.169°41.6'N125°12.5'W
South Extreme Path Limit 2S205:27:07.005:26:34.601°46.2'S172°10.5'W

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1958 Apr 19

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU101:30:53.901:30:21.500°30.6'N067°08.5'E
First Internal ContactU201:36:14.101:35:41.701°12.8'N065°40.1'E
Last Internal ContactU305:18:13.805:17:41.430°55.5'N162°55.4'W
Last External ContactU405:23:31.505:22:59.130°13.9'N164°25.8'W
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N101:34:33.201:34:00.802°07.8'N065°54.7'E
South Extreme Path Limit 1S101:32:37.301:32:04.900°24.8'S066°53.3'E
North Extreme Path Limit 2N205:19:53.305:19:21.031°49.5'N163°05.8'W
South Extreme Path Limit 2S205:21:49.405:21:17.029°19.4'N164°14.4'W

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Annular Solar Eclipse of 1958 Apr 19

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C101:33:33.801:33:01.500°51.2'N066°24.4'E
Extreme Central Line Limit 2C205:20:52.805:20:20.430°34.2'N163°40.8'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 Eclipse03:27:16.703:26:44.326°29.9'N123°25.1'E 73.9° 163.6° 227.6 km07m06.77s
Greatest Duration03:33:53.103:33:20.727°24.0'N125°20.9'E 73.5° 176.1° 227.0 km07m07.15s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Annular Solar Eclipse of 1958 Apr 19

Polynomial Besselian Elements
1958 Apr 19 at 03:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 -0.29427 0.20549 10.9624 0.56792 0.02165 225.1778
1 0.48987 0.13208 0.0142 -0.00004 -0.00004 15.0035
2 0.00003 -0.00007 -0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 -0.00000 - - - -
Tan ƒ1 0.0046558
Tan ƒ2 0.0046327

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 = 3.000

Explanation of Polynomial Besselian Elements

Links for the Annular Solar Eclipse of 1958 Apr 19

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Annular Solar Eclipse of 1958 Apr 19 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 32.4 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.