Path of the Annular Solar Eclipse of 1781 Apr 23

Fred Espenak

Introduction

The following table delineates the path of the Moon's antumbral shadow during the Annular Solar Eclipse of 1781 Apr 23 . 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 1781 Apr 23
UT1 Northern Limit Southern Limit Central Line M:S Sun Sun Path Central
Latitude Longitude Latitude Longitude Latitude Longitude Ratio Alt. Azm. Width Duration
Limits27°24.4'S134°40.5'W29°37.9'S133°57.5'W28°31.1'S134°18.9'W 0.932 - 257 km 04m43.9s
15:2426°38.5'S131°29.8'W28°10.9'S128°24.3'W27°22.4'S129°45.7'W 0.933 73° 252 km 04m48.1s
15:2624°20.1'S123°44.3'W25°59.9'S121°42.8'W25°09.6'S122°41.5'W 0.934 11° 70° 246 km 04m55.5s
15:2822°54.5'S119°51.4'W24°31.9'S117°58.7'W23°43.0'S118°53.8'W 0.936 16° 68° 242 km 04m59.9s
15:3021°43.1'S116°59.7'W23°18.2'S115°11.1'W22°30.5'S116°04.5'W 0.936 19° 67° 239 km 05m03.5s
15:3220°39.6'S114°40.5'W22°12.5'S112°54.5'W21°25.9'S113°46.8'W 0.937 22° 66° 237 km 05m06.6s
15:3419°41.2'S112°42.2'W21°12.0'S110°58.0'W20°26.6'S111°49.5'W 0.938 24° 65° 235 km 05m09.4s
15:3618°46.6'S110°58.7'W20°15.5'S109°15.9'W19°31.0'S110°06.9'W 0.938 26° 64° 233 km 05m12.0s
15:3817°54.8'S109°26.4'W19°22.1'S107°44.9'W18°38.4'S108°35.3'W 0.939 29° 63° 231 km 05m14.3s
15:4017°05.4'S108°03.0'W18°31.1'S106°22.5'W17°48.2'S107°12.4'W 0.939 30° 63° 229 km 05m16.6s
15:4216°17.9'S106°46.7'W17°42.1'S105°07.2'W17°00.0'S105°56.6'W 0.939 32° 62° 228 km 05m18.7s
15:4415°32.1'S105°36.4'W16°55.0'S103°57.8'W16°13.5'S104°46.8'W 0.940 34° 62° 226 km 05m20.7s
15:4614°47.7'S104°31.1'W16°09.3'S102°53.3'W15°28.5'S103°42.0'W 0.940 36° 61° 225 km 05m22.6s
15:4814°04.5'S103°30.2'W15°25.0'S101°53.1'W14°44.8'S102°41.4'W 0.941 37° 61° 224 km 05m24.5s
15:5013°22.5'S102°33.0'W14°41.9'S100°56.7'W14°02.2'S101°44.6'W 0.941 39° 60° 222 km 05m26.3s
15:5212°41.5'S101°39.1'W13°59.9'S100°03.4'W13°20.7'S100°51.1'W 0.941 41° 60° 221 km 05m28.0s
15:5412°01.3'S100°48.1'W13°18.8'S099°13.1'W12°40.1'S100°00.5'W 0.942 42° 59° 220 km 05m29.7s
15:5611°22.0'S099°59.8'W12°38.6'S098°25.4'W12°00.4'S099°12.4'W 0.942 43° 59° 219 km 05m31.3s
15:5810°43.5'S099°13.7'W11°59.3'S097°39.9'W11°21.4'S098°26.7'W 0.942 45° 59° 218 km 05m32.8s
16:0010°05.7'S098°29.8'W11°20.7'S096°56.5'W10°43.2'S097°43.0'W 0.942 46° 58° 216 km 05m34.4s
16:0209°28.5'S097°47.7'W10°42.8'S096°15.0'W10°05.7'S097°01.2'W 0.943 48° 58° 215 km 05m35.8s
16:0408°51.9'S097°07.4'W10°05.5'S095°35.2'W09°28.8'S096°21.2'W 0.943 49° 58° 214 km 05m37.3s
16:0608°15.9'S096°28.6'W09°28.9'S094°57.0'W08°52.4'S095°42.7'W 0.943 50° 58° 213 km 05m38.7s
16:0807°40.4'S095°51.3'W08°52.8'S094°20.1'W08°16.7'S095°05.6'W 0.943 51° 57° 212 km 05m40.1s
16:1007°05.4'S095°15.2'W08°17.3'S093°44.6'W07°41.4'S094°29.8'W 0.943 53° 57° 212 km 05m41.4s
16:1206°30.9'S094°40.4'W07°42.3'S093°10.2'W07°06.6'S093°55.2'W 0.944 54° 57° 211 km 05m42.7s
16:1405°56.8'S094°06.7'W07°07.8'S092°36.9'W06°32.3'S093°21.7'W 0.944 55° 56° 210 km 05m44.0s
16:1605°23.2'S093°34.0'W06°33.7'S092°04.7'W05°58.5'S092°49.2'W 0.944 56° 56° 209 km 05m45.2s
16:1804°49.9'S093°02.2'W06°00.1'S091°33.3'W05°25.1'S092°17.7'W 0.944 57° 56° 208 km 05m46.5s
16:2004°17.1'S092°31.3'W05°26.9'S091°02.8'W04°52.0'S091°47.0'W 0.944 58° 56° 207 km 05m47.6s
16:2203°44.6'S092°01.1'W04°54.1'S090°33.1'W04°19.4'S091°17.0'W 0.944 60° 55° 207 km 05m48.8s
16:2403°12.5'S091°31.8'W04°21.6'S090°04.1'W03°47.1'S090°47.9'W 0.945 61° 55° 206 km 05m50.0s
16:2602°40.7'S091°03.1'W03°49.6'S089°35.8'W03°15.2'S090°19.4'W 0.945 62° 55° 205 km 05m51.1s
16:2802°09.2'S090°35.0'W03°17.9'S089°08.1'W02°43.6'S089°51.5'W 0.945 63° 55° 204 km 05m52.2s
16:3001°38.0'S090°07.5'W02°46.5'S088°41.0'W02°12.3'S089°24.1'W 0.945 64° 54° 204 km 05m53.3s
16:3201°07.2'S089°40.5'W02°15.5'S088°14.4'W01°41.4'S088°57.3'W 0.945 65° 54° 203 km 05m54.3s
16:3400°36.6'S089°14.0'W01°44.8'S087°48.2'W01°10.7'S088°31.0'W 0.945 66° 54° 203 km 05m55.3s
16:3600°06.3'S088°48.0'W01°14.4'S087°22.5'W00°40.4'S088°05.2'W 0.945 67° 53° 202 km 05m56.3s
16:3800°23.7'N088°22.3'W00°44.3'S086°57.2'W00°10.3'S087°39.7'W 0.946 68° 53° 202 km 05m57.3s
16:4000°53.5'N087°57.1'W00°14.5'S086°32.3'W00°19.5'N087°14.6'W 0.946 69° 52° 201 km 05m58.3s
16:4201°23.0'N087°32.1'W00°15.0'N086°07.7'W00°49.0'N086°49.8'W 0.946 70° 52° 201 km 05m59.2s
16:4401°52.3'N087°07.5'W00°44.3'N085°43.4'W01°18.3'N086°25.4'W 0.946 71° 51° 200 km 06m00.1s
16:4602°21.3'N086°43.2'W01°13.2'N085°19.4'W01°47.3'N086°01.2'W 0.946 72° 51° 200 km 06m01.0s
16:4802°50.1'N086°19.1'W01°41.9'N084°55.6'W02°16.0'N085°37.2'W 0.946 73° 50° 199 km 06m01.9s
16:5003°18.6'N085°55.2'W02°10.4'N084°32.0'W02°44.5'N085°13.5'W 0.946 74° 50° 199 km 06m02.7s
16:5203°46.9'N085°31.5'W02°38.6'N084°08.6'W03°12.8'N084°50.0'W 0.946 75° 49° 199 km 06m03.6s
16:5404°15.0'N085°07.9'W03°06.6'N083°45.3'W03°40.8'N084°26.6'W 0.946 76° 48° 198 km 06m04.4s
16:5604°42.9'N084°44.5'W03°34.3'N083°22.2'W04°08.7'N084°03.3'W 0.946 77° 47° 198 km 06m05.1s
16:5805°10.6'N084°21.3'W04°01.8'N082°59.3'W04°36.2'N083°40.2'W 0.946 78° 46° 198 km 06m05.9s
17:0005°38.1'N083°58.1'W04°29.1'N082°36.4'W05°03.6'N083°17.1'W 0.946 79° 44° 197 km 06m06.6s
17:0206°05.3'N083°34.9'W04°56.1'N082°13.5'W05°30.8'N082°54.2'W 0.946 80° 43° 197 km 06m07.3s
17:0406°32.4'N083°11.8'W05°22.9'N081°50.7'W05°57.7'N082°31.2'W 0.946 81° 41° 197 km 06m08.0s
17:0606°59.3'N082°48.8'W05°49.5'N081°27.9'W06°24.4'N082°08.3'W 0.947 82° 38° 197 km 06m08.7s
17:0807°26.0'N082°25.7'W06°15.9'N081°05.2'W06°51.0'N081°45.4'W 0.947 83° 35° 197 km 06m09.3s
17:1007°52.4'N082°02.6'W06°42.0'N080°42.4'W07°17.3'N081°22.4'W 0.947 84° 31° 197 km 06m09.9s
17:1208°18.7'N081°39.5'W07°08.0'N080°19.5'W07°43.4'N080°59.4'W 0.947 84° 26° 197 km 06m10.4s
17:1408°44.8'N081°16.3'W07°33.7'N079°56.6'W08°09.3'N080°36.4'W 0.947 85° 19° 197 km 06m11.0s
17:1609°10.8'N080°53.0'W07°59.2'N079°33.6'W08°35.1'N080°13.2'W 0.947 86° 10° 196 km 06m11.5s
17:1809°36.5'N080°29.6'W08°24.5'N079°10.5'W09°00.6'N079°50.0'W 0.947 86° 358° 196 km 06m12.0s
17:2010°02.0'N080°06.0'W08°49.6'N078°47.3'W09°25.9'N079°26.6'W 0.947 86° 343° 197 km 06m12.4s
17:2210°27.4'N079°42.4'W09°14.5'N078°23.9'W09°51.0'N079°03.1'W 0.947 86° 328° 197 km 06m12.8s
17:2410°52.6'N079°18.5'W09°39.2'N078°00.4'W10°16.0'N078°39.4'W 0.947 86° 313° 197 km 06m13.2s
17:2611°17.6'N078°54.5'W10°03.7'N077°36.7'W10°40.7'N078°15.5'W 0.947 86° 301° 197 km 06m13.5s
17:2811°42.4'N078°30.2'W10°27.9'N077°12.7'W11°05.3'N077°51.4'W 0.947 85° 291° 197 km 06m13.8s
17:3012°07.0'N078°05.7'W10°52.0'N076°48.6'W11°29.6'N077°27.1'W 0.947 84° 284° 197 km 06m14.1s
17:3212°31.5'N077°40.9'W11°15.9'N076°24.2'W11°53.8'N077°02.5'W 0.947 84° 279° 197 km 06m14.3s
17:3412°55.7'N077°15.9'W11°39.5'N075°59.5'W12°17.7'N076°37.6'W 0.947 83° 275° 197 km 06m14.5s
17:3613°19.8'N076°50.6'W12°03.0'N075°34.6'W12°41.5'N076°12.5'W 0.947 82° 272° 198 km 06m14.7s
17:3813°43.7'N076°24.9'W12°26.2'N075°09.3'W13°05.1'N075°47.0'W 0.947 81° 269° 198 km 06m14.8s
17:4014°07.4'N075°58.9'W12°49.2'N074°43.7'W13°28.4'N075°21.2'W 0.947 80° 267° 198 km 06m14.9s
17:4214°30.9'N075°32.5'W13°12.1'N074°17.7'W13°51.6'N074°55.1'W 0.947 79° 266° 198 km 06m14.9s
17:4414°54.2'N075°05.8'W13°34.7'N073°51.4'W14°14.6'N074°28.5'W 0.946 78° 265° 199 km 06m14.9s
17:4615°17.3'N074°38.6'W13°57.1'N073°24.7'W14°37.3'N074°01.6'W 0.946 77° 263° 199 km 06m14.8s
17:4815°40.2'N074°11.0'W14°19.2'N072°57.5'W14°59.9'N073°34.2'W 0.946 76° 263° 199 km 06m14.7s
17:5016°03.0'N073°42.8'W14°41.2'N072°29.9'W15°22.2'N073°06.3'W 0.946 75° 262° 199 km 06m14.5s
17:5216°25.5'N073°14.2'W15°02.9'N072°01.8'W15°44.3'N072°37.9'W 0.946 74° 261° 200 km 06m14.3s
17:5416°47.8'N072°45.1'W15°24.4'N071°33.2'W16°06.2'N072°09.1'W 0.946 73° 261° 200 km 06m14.0s
17:5617°09.9'N072°15.4'W15°45.7'N071°04.0'W16°27.9'N071°39.7'W 0.946 72° 260° 201 km 06m13.7s
17:5817°31.8'N071°45.1'W16°06.7'N070°34.3'W16°49.4'N071°09.7'W 0.946 71° 260° 201 km 06m13.4s
18:0017°53.4'N071°14.2'W16°27.5'N070°04.1'W17°10.6'N070°39.1'W 0.946 70° 260° 201 km 06m12.9s
18:0218°14.8'N070°42.7'W16°48.0'N069°33.1'W17°31.6'N070°07.8'W 0.946 69° 260° 202 km 06m12.4s
18:0418°36.0'N070°10.4'W17°08.3'N069°01.6'W17°52.3'N069°35.9'W 0.946 68° 260° 202 km 06m11.9s
18:0618°57.0'N069°37.4'W17°28.3'N068°29.3'W18°12.8'N069°03.3'W 0.946 67° 260° 203 km 06m11.3s
18:0819°17.7'N069°03.7'W17°48.1'N067°56.3'W18°33.0'N068°29.9'W 0.946 66° 260° 203 km 06m10.6s
18:1019°38.1'N068°29.2'W18°07.6'N067°22.5'W18°53.0'N067°55.8'W 0.946 65° 260° 204 km 06m09.9s
18:1219°58.3'N067°53.8'W18°26.8'N066°47.9'W19°12.7'N067°20.8'W 0.945 64° 260° 204 km 06m09.1s
18:1420°18.2'N067°17.5'W18°45.7'N066°12.5'W19°32.1'N066°44.9'W 0.945 63° 260° 205 km 06m08.3s
18:1620°37.8'N066°40.2'W19°04.3'N065°36.1'W19°51.2'N066°08.1'W 0.945 62° 260° 205 km 06m07.3s
18:1820°57.1'N066°02.0'W19°22.6'N064°58.9'W20°10.0'N065°30.4'W 0.945 61° 260° 206 km 06m06.4s
18:2021°16.2'N065°22.7'W19°40.5'N064°20.6'W20°28.5'N064°51.6'W 0.945 60° 260° 206 km 06m05.3s
18:2221°34.8'N064°42.3'W19°58.2'N063°41.2'W20°46.6'N064°11.7'W 0.945 59° 260° 207 km 06m04.2s
18:2421°53.2'N064°00.7'W20°15.4'N063°00.7'W21°04.4'N063°30.7'W 0.945 57° 261° 207 km 06m03.0s
18:2622°11.2'N063°17.9'W20°32.3'N062°19.0'W21°21.9'N062°48.4'W 0.944 56° 261° 208 km 06m01.7s
18:2822°28.8'N062°33.7'W20°48.9'N061°36.1'W21°39.0'N062°04.9'W 0.944 55° 261° 208 km 06m00.4s
18:3022°46.1'N061°48.1'W21°05.0'N060°51.8'W21°55.6'N061°20.0'W 0.944 54° 262° 209 km 05m59.0s
18:3223°02.9'N061°01.1'W21°20.7'N060°06.1'W22°11.9'N060°33.6'W 0.944 53° 262° 210 km 05m57.5s
18:3423°19.3'N060°12.4'W21°35.9'N059°18.8'W22°27.7'N059°45.6'W 0.944 52° 262° 210 km 05m55.9s
18:3623°35.2'N059°22.0'W21°50.7'N058°30.0'W22°43.0'N058°56.0'W 0.944 50° 263° 211 km 05m54.3s
18:3823°50.6'N058°29.8'W22°04.9'N057°39.3'W22°57.9'N058°04.6'W 0.943 49° 263° 212 km 05m52.6s
18:4024°05.5'N057°35.6'W22°18.6'N056°46.9'W23°12.2'N057°11.3'W 0.943 48° 264° 213 km 05m50.8s
18:4224°19.8'N056°39.3'W22°31.8'N055°52.3'W23°25.9'N056°15.9'W 0.943 46° 264° 213 km 05m48.9s
18:4424°33.6'N055°40.8'W22°44.3'N054°55.6'W23°39.0'N055°18.3'W 0.943 45° 265° 214 km 05m46.9s
18:4624°46.6'N054°39.7'W22°56.1'N053°56.6'W23°51.5'N054°18.3'W 0.942 44° 265° 215 km 05m44.9s
18:4824°59.0'N053°35.9'W23°07.2'N052°54.9'W24°03.2'N053°15.6'W 0.942 42° 266° 216 km 05m42.7s
18:5025°10.6'N052°29.1'W23°17.6'N051°50.3'W24°14.2'N052°09.9'W 0.942 41° 266° 217 km 05m40.5s
18:5225°21.3'N051°19.0'W23°27.1'N050°42.7'W24°24.3'N051°01.1'W 0.942 39° 267° 218 km 05m38.1s
18:5425°31.1'N050°05.3'W23°35.6'N049°31.5'W24°33.4'N049°48.7'W 0.941 38° 267° 219 km 05m35.7s
18:5625°39.8'N048°47.5'W23°43.1'N048°16.5'W24°41.5'N048°32.3'W 0.941 36° 268° 220 km 05m33.1s
18:5825°47.4'N047°25.0'W23°49.3'N046°57.0'W24°48.4'N047°11.4'W 0.941 34° 269° 221 km 05m30.4s
19:0025°53.6'N045°57.2'W23°54.2'N045°32.4'W24°54.0'N045°45.3'W 0.940 33° 270° 223 km 05m27.6s
19:0225°58.2'N044°23.2'W23°57.6'N044°02.0'W24°58.0'N044°13.1'W 0.940 31° 270° 224 km 05m24.6s
19:0426°01.1'N042°41.9'W23°59.2'N042°24.6'W25°00.2'N042°33.9'W 0.939 29° 271° 226 km 05m21.5s
19:0626°01.7'N040°51.8'W23°58.5'N040°38.9'W25°00.2'N040°46.1'W 0.939 27° 272° 227 km 05m18.2s
19:0825°59.6'N038°50.6'W23°55.2'N038°42.7'W24°57.5'N038°47.5'W 0.938 25° 273° 229 km 05m14.7s
19:1025°54.1'N036°35.1'W23°48.4'N036°33.1'W24°51.4'N036°35.2'W 0.938 22° 274° 231 km 05m10.8s
19:1225°43.8'N034°00.0'W23°37.1'N034°05.3'W24°40.6'N034°03.9'W 0.937 19° 276° 234 km 05m06.6s
19:1425°26.5'N030°55.1'W23°18.9'N031°10.1'W24°22.9'N031°04.4'W 0.936 16° 277° 237 km 05m01.9s
19:1624°56.7'N026°57.0'W22°49.1'N027°27.4'W23°53.2'N027°14.8'W 0.935 12° 279° 241 km 04m56.2s
19:1823°50.5'N020°19.9'W21°49.0'N021°39.2'W22°51.1'N021°06.8'W 0.934 281° 247 km 04m47.8s
Limits22°39.6'N014°39.4'W20°27.1'N015°18.3'W21°33.4'N014°59.3'W 0.932 - 253 km 04m40.5s

ΔT = 16.6 seconds

Greatest Eclipse and Greatest Duration
Event Time
TD
Time
UT1
Latitude Longitude Sun
Altitude
Sun
Azimuth
Path Width Central
Duration
Greatest Eclipse17:21:25.217:21:08.509°40.3'N079°17.3'W 86.5° 334.3° 196.5 km06m12.65s
Greatest Duration17:42:20.717:42:04.013°52.4'N074°54.2'W 79.1° 265.8° 198.3 km06m14.90s

Explanation of Greatest Eclipse and Greatest Duration

Links for the Annular Solar Eclipse of 1781 Apr 23

Links to Additional Solar Eclipse Predictions

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

Eclipse Predictions

Predictions for the Annular Solar Eclipse of 1781 Apr 23 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 16.6 seconds for this eclipse. The uncertainty in ΔT is 1.7 seconds corresponding to a standard error in longitude of the eclipse path of ± 0.01°.

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.