Solar Eclipse Prime Page

Total Solar Eclipse of 1911 Apr 28

Fred Espenak

Introduction


The Total Solar Eclipse of 1911 Apr 28 is visible from the following geographic regions:

  • Partial Eclipse: east Australia, New Zealand, west North America
  • Total Eclipse: central Pacific

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 1911 Apr 28 at 22:27:22 TD (22:27:10 UT1). This is 1.4 days before the Moon reaches perigee. 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 -144.

The eclipse belongs to Saros 127 and is number 52 of 82 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 1911 Apr 28 is a relatively long total eclipse with a duration at greatest eclipse of 04m57s. It has an eclipse magnitude of 1.0562.

The total solar eclipse of 1911 Apr 28 is followed two weeks later by a penumbral lunar eclipse on 1911 May 13.

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 12.2 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 1911 Apr 28 .


Eclipse Data: Total Solar Eclipse of 1911 Apr 28

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 1.05617
Eclipse Obscuration 1.11549
Gamma-0.22939
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1911 Apr 28 at 22:27:21.8 TD (22:27:09.6 UT1) 2419155.435528
Ecliptic Conjunction 1911 Apr 28 at 22:24:59.5 TD (22:24:47.3 UT1) 2419155.433881
Equatorial Conjunction 1911 Apr 28 at 22:16:23.0 TD (22:16:10.8 UT1) 2419155.427903
Geocentric Coordinates of Sun and Moon
1911 Apr 28 at 22:27:21.8 TD (22:27:09.6 UT1)
Coordinate Sun Moon
Right Ascension02h20m34.5s02h20m58.3s
Declination+14°01'17.3"+13°48'41.7"
Semi-Diameter 15'52.8" 16'29.9"
Eq. Hor. Parallax 08.7" 1°00'33.0"
Geocentric Libration of Moon
Angle Value
l -3.1°
b 0.3°
c -17.5°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 12.2 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 127 (52/82)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Total Solar Eclipse of 1911 Apr 28

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP119:49:01.819:48:49.632°19.1'S161°14.6'E
First Internal ContactP221:45:34.021:45:21.852°16.8'S141°51.6'E
Last Internal ContactP323:09:25.123:09:13.004°52.0'S079°09.0'W
Last External ContactP401:05:42.701:05:30.515°38.4'N102°59.5'W
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N120:53:33.820:53:21.606°47.5'S137°44.5'E
South Extreme Path Limit 1S121:16:11.621:15:59.469°25.1'S172°00.5'E
North Extreme Path Limit 2N200:00:58.100:00:45.940°59.0'N078°16.3'W
South Extreme Path Limit 2S223:39:02.523:38:50.324°31.0'S091°53.2'W

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Total Solar Eclipse of 1911 Apr 28

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU120:44:54.820:44:42.636°40.1'S148°54.0'E
First Internal ContactU220:47:02.620:46:50.436°55.5'S148°28.2'E
Last Internal ContactU300:07:45.800:07:33.710°57.9'N089°44.6'W
Last External ContactU400:09:56.800:09:44.711°13.9'N090°13.1'W
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N120:45:51.220:45:39.036°14.4'S148°29.8'E
South Extreme Path Limit 1S120:46:07.120:45:54.937°21.1'S148°52.3'E
North Extreme Path Limit 2N200:08:58.700:08:46.511°40.8'N089°51.6'W
South Extreme Path Limit 2S200:08:43.000:08:30.810°31.1'N090°05.8'W

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Total Solar Eclipse of 1911 Apr 28

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C120:45:58.720:45:46.536°47.7'S148°41.1'E
Extreme Central Line Limit 2C200:08:51.300:08:39.211°06.0'N089°58.8'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 Eclipse22:27:21.822:27:09.601°56.2'N151°58.4'W 76.8° 336.1° 189.9 km04m57.45s
Greatest Duration22:34:25.822:34:13.603°29.3'N150°07.0'W 76.2° 320.2° 190.7 km04m58.08s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Total Solar Eclipse of 1911 Apr 28

Polynomial Besselian Elements
1911 Apr 28 at 22:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 -0.14277 -0.31793 14.0162 0.53611 -0.00999 150.6242
1 0.52283 0.24003 0.0126 -0.00007 -0.00006 15.0029
2 0.00006 -0.00006 -0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 -0.00000 - - - -
Tan ƒ1 0.0046421
Tan ƒ2 0.0046190

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 = 22.000

Explanation of Polynomial Besselian Elements

Links for the Total Solar Eclipse of 1911 Apr 28

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Total Solar Eclipse of 1911 Apr 28 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 12.2 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.