Solar Eclipse Prime Page

Total Solar Eclipse of 2091 Aug 15

Fred Espenak

Introduction


The Total Solar Eclipse of 2091 Aug 15 is visible from the following geographic regions:

  • Partial Eclipse: Australia, Antarctica, New Zealand
  • Total Eclipse: Southern Ocean (near 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 2091 Aug 15 at 00:34:43 TD (00:32:44 UT1). This is 3.2 days before the Moon reaches perigee. 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 2086.

The eclipse belongs to Saros 127 and is number 62 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 total solar eclipse of 2091 Aug 15 is followed two weeks later by a total lunar eclipse on 2091 Aug 29.

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 118.6 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 2091 Aug 15 .


Eclipse Data: Total Solar Eclipse of 2091 Aug 15

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 1.02156
Eclipse Obscuration 1.04358
Gamma-0.94897
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 2091 Aug 15 at 00:34:42.9 TD (00:32:44.3 UT1) 2485008.522735
Ecliptic Conjunction 2091 Aug 15 at 00:24:41.8 TD (00:22:43.2 UT1) 2485008.515778
Equatorial Conjunction 2091 Aug 15 at 00:58:54.8 TD (00:56:56.3 UT1) 2485008.539540
Geocentric Coordinates of Sun and Moon
2091 Aug 15 at 00:34:42.9 TD (00:32:44.3 UT1)
Coordinate Sun Moon
Right Ascension09h39m24.9s09h38m32.0s
Declination+14°00'16.0"+13°05'59.9"
Semi-Diameter 15'47.2" 16'03.2"
Eq. Hor. Parallax 08.7" 0°58'54.9"
Geocentric Libration of Moon
Angle Value
l -4.3°
b 1.3°
c 20.4°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 118.6 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 127 (62/82)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Total Solar Eclipse of 2091 Aug 15

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP122:24:15.122:22:16.524°00.1'S121°59.5'E
Last External ContactP402:44:54.602:42:56.049°30.1'S146°31.5'W
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N123:02:56.323:00:57.710°36.1'S108°36.4'E
South Extreme Path Limit 1S102:06:19.602:04:21.036°29.6'S130°33.0'W

Explanation of Penumbral Shadow Contacts and Extremes Tables

Umbral Shadow Contacts and Extremes: Total Solar Eclipse of 2091 Aug 15

Contacts of Umbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactU100:00:09.823:58:11.255°26.4'S112°51.7'E
First Internal ContactU200:03:10.700:01:12.156°49.0'S113°17.9'E
Last Internal ContactU301:05:55.101:03:56.575°32.6'S179°55.0'E
Last External ContactU401:09:01.101:07:02.575°04.8'S174°56.3'W
Extreme Northern and Southern Path Limits of Umbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N100:00:15.623:58:17.055°24.2'S112°48.4'E
South Extreme Path Limit 1S100:03:05.500:01:06.956°51.0'S113°21.0'E
North Extreme Path Limit 2N201:08:55.301:06:56.775°04.0'S174°46.0'W
South Extreme Path Limit 2S201:06:00.501:04:01.975°33.1'S179°45.0'E

Explanation of Umbral Shadow Contacts and Extremes Tables

Central Line Extremes and Duration: Total Solar Eclipse of 2091 Aug 15

Extreme Limits of the Central Line
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
Extreme Central Line Limit 1C100:01:38.323:59:39.756°06.8'S113°03.7'E
Extreme Central Line Limit 2C201:07:30.001:05:31.475°19.5'S177°23.9'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 Eclipse00:34:42.900:32:44.355°34.9'S149°43.1'E 17.8° 23.2° 236.5 km01m38.14s
Greatest Duration00:35:13.800:33:15.255°41.5'S150°31.7'E 17.8° 22.8° 236.0 km01m38.15s

Explanation of Greatest Eclipse and Greatest Duration

Polynomial Besselian Elements: Total Solar Eclipse of 2091 Aug 15

Polynomial Besselian Elements
2091 Aug 15 at 01:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.00984 -0.97769 14.0013 0.54174 -0.00440 193.8407
1 0.54352 -0.12908 -0.0127 -0.00012 -0.00012 15.0034
2 -0.00000 -0.00004 -0.0000 -0.00001 -0.00001 0.0000
3 -0.00001 0.00000 - - - -
Tan ƒ1 0.0046152
Tan ƒ2 0.0045922

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 = 1.000

Explanation of Polynomial Besselian Elements

Links for the Total Solar Eclipse of 2091 Aug 15

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Total Solar Eclipse of 2091 Aug 15 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 118.6 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.