Path of the Annular Solar Eclipse of 0990 Oct 21

Fred Espenak

Introduction

The following table delineates the path of the Moon's antumbral shadow during the Annular Solar Eclipse of 0990 Oct 21 . The geographic coordinates (WGS 84) of the northern and southern limits and the central line are listed at 120-second intervals. This provides adequate detail for making plots of the path on larger scale maps. Local circumstances on the central line include the ratio of the apparent diameters of the Moon to the Sun, the Sun's altitude and azimuth (degrees), the path width (kilometers) and the duration on the central line (minutes and seconds). See the Explanation of the Central Eclipse Path Table for a description of each column in the table.

The geographic visibility of the eclipse is shown on a global map on the Prime Page for the Eclipse which also includes complete details on the eclipse. The path of the eclipse is displayed in greater detail on an interactive Google Map .

Annular Solar Eclipse of 0990 Oct 21
UT1 Northern Limit Southern Limit Central Line M:S Sun Sun Path Central
Latitude Longitude Latitude Longitude Latitude Longitude Ratio Alt. Azm. Width Duration
Limits74°18.4'N011°44.8'W69°52.1'N024°09.2'W72°06.6'N019°10.9'W 0.915 - 643 km 06m41.8s
09:58 - - 62°10.9'N002°34.1'W71°01.6'N015°51.2'W 0.915 139° 635 km 06m45.5s
10:00 - - 60°49.8'N000°25.9'E66°54.7'N005°03.9'W 0.916 149° 610 km 07m00.6s
10:02 - - 59°39.5'N002°55.2'E64°51.2'N000°26.2'W 0.917 10° 154° 600 km 07m08.7s
10:04 - - 58°36.7'N005°03.9'E63°16.7'N002°52.1'E 0.918 12° 158° 594 km 07m15.0s
10:0668°47.6'N000°46.4'E57°39.5'N006°57.8'E61°57.6'N005°30.6'E 0.918 14° 161° 590 km 07m20.5s
10:0866°35.6'N005°03.3'E56°46.8'N008°40.4'E60°48.4'N007°44.5'E 0.918 15° 163° 587 km 07m25.3s
10:1064°56.9'N008°05.8'E55°57.8'N010°14.2'E59°46.5'N009°41.6'E 0.919 17° 166° 585 km 07m29.6s
10:1263°35.2'N010°32.2'E55°11.8'N011°40.8'E58°50.1'N011°26.2'E 0.919 18° 168° 585 km 07m33.6s
10:1462°24.4'N012°36.6'E54°28.5'N013°01.5'E57°58.1'N013°01.3'E 0.919 19° 170° 585 km 07m37.2s
10:1661°21.3'N014°25.9'E53°47.5'N014°17.4'E57°09.7'N014°28.9'E 0.920 20° 172° 585 km 07m40.6s
10:1860°24.1'N016°04.2'E53°08.5'N015°29.1'E56°24.4'N015°50.5'E 0.920 21° 174° 586 km 07m43.8s
10:2059°31.7'N017°34.1'E52°31.3'N016°37.2'E55°41.7'N017°07.0'E 0.920 22° 176° 587 km 07m46.7s
10:2258°43.1'N018°57.5'E51°55.8'N017°42.2'E55°01.4'N018°19.3'E 0.920 22° 177° 589 km 07m49.4s
10:2457°57.7'N020°15.5'E51°21.8'N018°44.7'E54°23.1'N019°28.0'E 0.920 23° 179° 592 km 07m51.9s
10:2657°15.2'N021°29.2'E50°49.1'N019°44.8'E53°46.7'N020°33.8'E 0.920 24° 181° 594 km 07m54.2s
10:2856°35.2'N022°39.3'E50°17.7'N020°42.9'E53°12.0'N021°36.9'E 0.920 24° 183° 597 km 07m56.3s
10:3055°57.4'N023°46.4'E49°47.5'N021°39.2'E52°38.8'N022°37.8'E 0.921 25° 184° 600 km 07m58.3s
10:3255°21.5'N024°51.0'E49°18.4'N022°34.0'E52°07.0'N023°36.8'E 0.921 25° 186° 603 km 08m00.1s
10:3454°47.4'N025°53.4'E48°50.4'N023°27.4'E51°36.5'N024°34.2'E 0.921 25° 187° 607 km 08m01.8s
10:3654°15.0'N026°54.0'E48°23.3'N024°19.7'E51°07.3'N025°30.1'E 0.921 26° 189° 611 km 08m03.2s
10:3853°44.1'N027°53.2'E47°57.2'N025°11.0'E50°39.3'N026°24.9'E 0.921 26° 191° 614 km 08m04.6s
10:4053°14.6'N028°51.0'E47°32.0'N026°01.5'E50°12.3'N027°18.6'E 0.921 26° 192° 618 km 08m05.7s
10:4252°46.4'N029°47.9'E47°07.6'N026°51.1'E49°46.4'N028°11.4'E 0.921 27° 194° 623 km 08m06.7s
10:4452°19.5'N030°43.9'E46°44.0'N027°40.2'E49°21.4'N029°03.6'E 0.921 27° 195° 627 km 08m07.6s
10:4651°53.8'N031°39.3'E46°21.3'N028°28.8'E48°57.4'N029°55.2'E 0.921 27° 197° 631 km 08m08.3s
10:4851°29.2'N032°34.2'E45°59.3'N029°17.0'E48°34.3'N030°46.3'E 0.921 27° 198° 636 km 08m08.8s
10:5051°05.7'N033°28.8'E45°38.0'N030°05.0'E48°12.2'N031°37.2'E 0.921 27° 200° 640 km 08m09.2s
10:5250°43.3'N034°23.3'E45°17.5'N030°52.7'E47°50.8'N032°27.9'E 0.921 27° 201° 644 km 08m09.4s
10:5450°21.9'N035°17.8'E44°57.7'N031°40.4'E47°30.4'N033°18.6'E 0.921 27° 203° 648 km 08m09.5s
10:5650°01.5'N036°12.4'E44°38.6'N032°28.1'E47°10.7'N034°09.3'E 0.921 27° 204° 653 km 08m09.4s
10:5849°42.1'N037°07.4'E44°20.2'N033°15.9'E46°51.9'N035°00.2'E 0.921 27° 206° 657 km 08m09.2s
11:0049°23.7'N038°02.9'E44°02.5'N034°03.9'E46°33.9'N035°51.4'E 0.921 27° 207° 660 km 08m08.8s
11:0249°06.2'N038°59.1'E43°45.5'N034°52.3'E46°16.6'N036°43.1'E 0.921 27° 209° 664 km 08m08.2s
11:0448°49.8'N039°56.0'E43°29.1'N035°41.0'E46°00.2'N037°35.3'E 0.921 26° 210° 667 km 08m07.4s
11:0648°34.4'N040°54.0'E43°13.5'N036°30.3'E45°44.6'N038°28.3'E 0.921 26° 211° 670 km 08m06.5s
11:0848°19.9'N041°53.2'E42°58.6'N037°20.2'E45°29.9'N039°22.0'E 0.921 26° 213° 673 km 08m05.5s
11:1048°06.6'N042°53.9'E42°44.3'N038°10.9'E45°15.9'N040°16.9'E 0.921 25° 214° 676 km 08m04.2s
11:1247°54.3'N043°56.4'E42°30.8'N039°02.5'E45°02.9'N041°12.8'E 0.921 25° 216° 678 km 08m02.8s
11:1447°43.1'N045°00.8'E42°18.0'N039°55.2'E44°50.7'N042°10.2'E 0.920 25° 217° 679 km 08m01.2s
11:1647°33.1'N046°07.7'E42°06.0'N040°49.0'E44°39.4'N043°09.2'E 0.920 24° 219° 680 km 07m59.4s
11:1847°24.5'N047°17.3'E41°54.7'N041°44.2'E44°29.1'N044°10.1'E 0.920 24° 220° 681 km 07m57.4s
11:2047°17.2'N048°30.3'E41°44.3'N042°41.0'E44°19.8'N045°13.1'E 0.920 23° 222° 681 km 07m55.2s
11:2247°11.4'N049°47.3'E41°34.7'N043°39.5'E44°11.6'N046°18.6'E 0.920 22° 223° 681 km 07m52.8s
11:2447°07.4'N051°09.2'E41°26.1'N044°40.2'E44°04.6'N047°27.0'E 0.920 21° 225° 680 km 07m50.1s
11:2647°05.3'N052°36.9'E41°18.4'N045°43.1'E43°58.8'N048°38.9'E 0.920 21° 226° 678 km 07m47.3s
11:2847°05.6'N054°12.1'E41°11.8'N046°48.9'E43°54.5'N049°54.8'E 0.919 20° 228° 677 km 07m44.1s
11:3047°08.7'N055°56.9'E41°06.2'N047°57.8'E43°51.8'N051°15.6'E 0.919 19° 230° 674 km 07m40.7s
11:3247°15.6'N057°54.7'E41°02.0'N049°10.4'E43°51.0'N052°42.3'E 0.919 18° 231° 672 km 07m37.0s
11:3447°27.6'N060°11.5'E40°59.2'N050°27.4'E43°52.3'N054°16.5'E 0.919 17° 233° 668 km 07m33.0s
11:3647°47.5'N062°59.0'E40°57.9'N051°49.7'E43°56.4'N056°00.3'E 0.918 15° 235° 665 km 07m28.5s
11:3848°23.4'N066°50.2'E40°58.6'N053°18.5'E44°03.9'N057°56.9'E 0.918 14° 237° 661 km 07m23.4s
11:40 - - 41°01.5'N054°55.5'E44°16.2'N060°11.9'E 0.917 12° 239° 656 km 07m17.7s
11:42 - - 41°07.3'N056°43.1'E44°35.9'N062°56.5'E 0.917 10° 241° 652 km 07m11.0s
11:44 - - 41°16.8'N058°45.2'E45°10.0'N066°39.8'E 0.916 244° 647 km 07m02.2s
Limits50°14.4'N075°37.1'E44°06.9'N075°49.0'E47°01.1'N075°47.0'E 0.914 - 642 km 06m43.4s

ΔT = 1611.2 seconds

Greatest Eclipse and Greatest Duration
Event Time
TD
Time
UT1
Latitude Longitude Sun
Altitude
Sun
Azimuth
Path Width Central
Duration
Greatest Eclipse11:18:35.210:51:44.047°53.6'N025°37.3'E 27.1° 201.0° 643.7 km08m09.41s
Greatest Duration11:20:43.810:53:52.747°31.6'N033°15.5'E 27.1° 202.6° 648.2 km08m09.51s

Explanation of Greatest Eclipse and Greatest Duration

Links for the Annular Solar Eclipse of 0990 Oct 21

Links to Additional Solar Eclipse Predictions

  • Home - home page of EclipseWise with predictions for both solar and lunar eclipses
  • Solar Eclipses - primary page for solar eclipse predictions
  • Solar Eclipse Links - detailed directory of links

Eclipse Predictions

Predictions for the Annular Solar Eclipse of 0990 Oct 21 were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates were calculated with respect to the Moon's Center of Mass. Although the predictions are first calculated in Terrestrial Dynamical Time (TD), they are then converted to Universal Time (UT1) as presented here. The parameter ΔT is used to convert between the two times (i.e., UT1 = TD - ΔT). ΔT has a value of 1611.2 seconds for this eclipse. The uncertainty in ΔT is 55.0 seconds corresponding to a standard error in longitude of the eclipse path of ± 0.23°.

Acknowledgments

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, EclipseWise.com"

The use of diagrams and maps is permitted provided that they are unaltered (except for re-sizing) and the embedded credit line is not removed or covered.