Solar Eclipse Prime Page

Annular Solar Eclipse of 1915 Aug 10

Fred Espenak

Introduction


The Annular Solar Eclipse of 1915 Aug 10 is visible from the following geographic regions:

  • Partial Eclipse: Northeast Asia, central Pacific, New Guinea
  • Annular 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 1915 Aug 10 at 22:52:25 TD (22:52:07 UT1). This is 5.8 days after the Moon reaches apogee. During the eclipse, the Sun is in the constellation Leo. The synodic month in which the eclipse takes place has a Brown Lunation Number of -91.

The eclipse belongs to Saros 134 and is number 38 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 1915 Aug 10 is preceded two weeks earlier by a penumbral lunar eclipse on 1915 Jul 26, and it is followed two weeks later by a penumbral lunar eclipse on 1915 Aug 24.

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 17.8 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 Annular Solar Eclipse of 1915 Aug 10 .


Eclipse Data: Annular Solar Eclipse of 1915 Aug 10

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 0.98528
Eclipse Obscuration 0.97078
Gamma 0.01237
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1915 Aug 10 at 22:52:24.5 TD (22:52:06.8 UT1) 2420720.452856
Ecliptic Conjunction 1915 Aug 10 at 22:52:16.2 TD (22:51:58.4 UT1) 2420720.452760
Equatorial Conjunction 1915 Aug 10 at 22:51:48.2 TD (22:51:30.4 UT1) 2420720.452436
Geocentric Coordinates of Sun and Moon
1915 Aug 10 at 22:52:24.5 TD (22:52:06.8 UT1)
Coordinate Sun Moon
Right Ascension09h18m36.8s09h18m37.9s
Declination+15°41'16.7"+15°41'54.9"
Semi-Diameter 15'46.8" 15'18.4"
Eq. Hor. Parallax 08.7" 0°56'10.4"
Geocentric Libration of Moon
Angle Value
l -4.7°
b -0.0°
c 16.1°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 17.8 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 134 (38/71)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1915 Aug 10

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP119:56:16.819:55:59.122°58.4'N145°28.8'E
First Internal ContactP222:02:04.622:01:46.824°05.4'N113°39.7'E
Last Internal ContactP323:42:46.523:42:28.721°02.9'S090°30.0'W
Last External ContactP401:48:26.301:48:08.522°09.8'S122°16.5'W
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N121:25:33.121:25:15.354°41.8'N106°37.1'E
South Extreme Path Limit 1S121:09:11.621:08:53.808°56.4'S136°38.3'E
North Extreme Path Limit 2N200:19:36.100:19:18.310°37.7'N090°29.4'W
South Extreme Path Limit 2S200:35:12.900:34:55.153°07.6'S119°22.2'W

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Annular Solar Eclipse of 1915 Aug 10

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU120:58:11.220:57:53.423°13.3'N129°55.4'E
First Internal ContactU221:00:11.320:59:53.623°14.1'N129°25.1'E
Last Internal ContactU300:44:40.100:44:22.321°54.2'S106°15.0'W
Last External ContactU400:46:34.700:46:16.921°54.9'S106°43.9'W
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N120:59:20.320:59:02.523°42.6'N129°28.3'E
South Extreme Path Limit 1S120:59:02.620:58:44.822°44.8'N129°52.1'E
North Extreme Path Limit 2N200:45:29.100:45:11.321°26.9'S106°18.3'W
South Extreme Path Limit 2S200:45:45.400:45:27.722°22.1'S106°40.5'W

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Annular Solar Eclipse of 1915 Aug 10

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C120:59:11.320:58:53.523°13.7'N129°40.3'E
Extreme Central Line Limit 2C200:45:37.400:45:19.621°54.6'S106°29.4'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 Eclipse22:52:24.522:52:06.816°26.6'N161°29.2'W 89.2° 200.5° 52.1 km01m33.12s
Greatest Duration20:59:11.320:58:53.523°13.7'N129°40.3'E 0.0° 72.9° 113.9 km01m58.87s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Annular Solar Eclipse of 1915 Aug 10

Polynomial Besselian Elements
1915 Aug 10 at 23:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.06642 -0.01522 15.6865 0.55486 0.00865 163.6779
1 0.48624 -0.21007 -0.0116 -0.00011 -0.00011 15.0027
2 -0.00003 -0.00009 -0.0000 -0.00001 -0.00001 0.0000
3 -0.00001 0.00000 - - - -
Tan ƒ1 0.0046136
Tan ƒ2 0.0045906

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 = 23.000

Explanation of Polynomial Besselian Elements

Links for the Annular Solar Eclipse of 1915 Aug 10

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Annular Solar Eclipse of 1915 Aug 10 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 17.8 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.