EclipseWise - Catalog of Solar Eclipses of Saros 91

Introduction

A solar eclipse occurs whenever the Moon's shadow passes across Earth's surface. At least two solar eclipses and as many as five occur every year.

The periodicity and recurrence of solar eclipses is governed by the Saros cycle, a period of approximately 6,585.3 days (18 years 11 days 8 hours). When two eclipses are separated by a period of one Saros, they share a very similar geometry. The two eclipses occur at the same node with the Moon at nearly the same distance from Earth and the same time of year due to a harmonic in three cycles of the Moon's orbit. Thus, the Saros is useful for organizing eclipses into families or series. Each series typically lasts 12 to 13 centuries and contains 70 or more eclipses. Every saros series begins with a number of partial eclipses near one of Earth's polar regions. The series will then produce several dozen central eclipses before ending with a group of partial eclipses near the opposite pole. For more information, see Periodicity of Solar Eclipses.

Catalog of Solar Eclipses of Saros 91

The table below lists the concise characteristics of every solar eclipse belonging to Saros 91 . The date and time of each eclipse is given for the instant of Greatest Eclipse. For eclipses between the years -1999 to 3000, the calendar date links to a web page containing additional details and a map showing the geographic region of eclipse visibility for that eclipse. A description of each parameter in the catalog table can be found in Key to Saros Catalog of Solar Eclipses.

Catalog of Solar Eclipses of Saros 91
Seq Num	Rel Num	Calendar Date	TD of Greatest Eclipse	ΔT s	ΔT Sigma s	Luna Num	Ecl Type	QLE	Gamma	Ecl Mag	Lat °	Long °	Sun Alt °	Path Width km	Central Dur
1	-40	-0159-Aug-06	16:16:46	12218	313	-26696	Pb	t-	1.5261	0.0123	69N	137E	0	-	-
2	-39	-0141-Aug-18	00:07:09	12012	307	-26473	P	t-	1.4736	0.1126	70N	6E	0	-	-
3	-38	-0123-Aug-28	08:05:28	11812	302	-26250	P	t-	1.4274	0.2009	71N	127W	0	-	-
4	-37	-0105-Sep-08	16:12:50	11611	296	-26027	P	t-	1.3883	0.2756	71N	96E	0	-	-
5	-36	-0087-Sep-19	00:28:50	11416	291	-25804	P	t-	1.3561	0.3369	72N	42W	0	-	-
6	-35	-0069-Sep-30	08:52:29	11223	285	-25581	P	t-	1.3301	0.3863	72N	177E	0	-	-
7	-34	-0051-Oct-10	17:24:18	11029	280	-25358	P	t-	1.3107	0.4232	72N	34E	0	-	-
8	-33	-0033-Oct-22	02:03:09	10843	274	-25135	P	t-	1.2968	0.4495	71N	110W	0	-	-
9	-32	-0015-Nov-01	10:48:03	10657	269	-24912	P	t-	1.2882	0.4658	70N	104E	0	-	-
10	-31	0003-Nov-12	19:36:15	10472	264	-24689	P	t-	1.2824	0.4769	70N	41W	0	-	-
11	-30	0021-Nov-23	04:28:28	10295	259	-24466	P	t-	1.2799	0.4817	69N	173E	0	-	-
12	-29	0039-Dec-04	13:22:00	10118	253	-24243	P	t-	1.2783	0.4848	68N	27E	0	-	-
13	-28	0057-Dec-14	22:15:20	9942	248	-24020	P	t-	1.2767	0.4878	66N	118W	0	-	-
14	-27	0075-Dec-26	07:06:34	9769	243	-23797	P	t-	1.2735	0.4939	65N	98E	0	-	-
15	-26	0094-Jan-05	15:54:48	9595	238	-23574	P	t-	1.2680	0.5043	64N	44W	0	-	-
16	-25	0112-Jan-17	00:38:35	9422	233	-23351	P	t-	1.2591	0.5214	64N	174E	0	-	-
17	-24	0130-Jan-27	09:15:41	9251	228	-23128	P	t-	1.2448	0.5485	63N	35E	0	-	-
18	-23	0148-Feb-07	17:46:39	9079	224	-22905	P	t-	1.2256	0.5851	62N	102W	0	-	-
19	-22	0166-Feb-18	02:09:34	8907	219	-22682	P	t-	1.2002	0.6337	62N	122E	0	-	-
20	-21	0184-Feb-29	10:24:28	8735	214	-22459	P	t-	1.1686	0.6944	61N	11W	0	-	-
21	-20	0202-Mar-11	18:30:37	8563	209	-22236	P	t-	1.1301	0.7685	61N	142W	0	-	-
22	-19	0220-Mar-22	02:29:09	8391	205	-22013	P	t-	1.0857	0.8541	61N	89E	0	-	-
23	-18	0238-Apr-02	10:19:37	8219	200	-21790	P	t-	1.0349	0.9520	61N	38W	0	-	-
24	-17	0256-Apr-12	18:01:56	8047	196	-21567	T	t-	0.9777	1.0522	63N	139W	11	860	02m50s
25	-16	0274-Apr-24	01:38:10	7875	191	-21344	T	p-	0.9160	1.0564	63N	125E	23	463	03m14s
26	-15	0292-May-04	09:08:24	7703	187	-21121	T	p-	0.8498	1.0586	64N	24E	31	365	03m29s
27	-14	0310-May-15	16:34:45	7530	182	-20898	T	p-	0.7805	1.0596	64N	76W	38	313	03m41s
28	-13	0328-May-25	23:56:18	7356	178	-20675	T	p-	0.7078	1.0596	63N	176W	45	277	03m50s
29	-12	0346-Jun-06	07:17:07	7183	174	-20452	T	p-	0.6348	1.0586	61N	83E	50	250	03m58s
30	-11	0364-Jun-16	14:35:59	7006	169	-20229	T	p-	0.5610	1.0566	57N	19W	56	226	04m02s
31	-10	0382-Jun-27	21:55:24	6828	165	-20006	T	p-	0.4880	1.0538	53N	123W	61	204	04m03s
32	-9	0400-Jul-08	05:15:51	6651	161	-19783	T	p-	0.4164	1.0502	48N	130E	65	183	04m00s
33	-8	0418-Jul-19	12:39:34	6472	157	-19560	T	n-	0.3482	1.0459	42N	20E	69	163	03m52s
34	-7	0436-Jul-29	20:07:22	6292	153	-19337	T	n-	0.2844	1.0409	35N	92W	73	143	03m37s
35	-6	0454-Aug-10	03:38:54	6114	149	-19114	T	n-	0.2244	1.0355	28N	155E	77	122	03m17s
36	-5	0472-Aug-20	11:17:17	5938	145	-18891	T	nn	0.1711	1.0296	22N	38E	80	102	02m50s
37	-4	0490-Aug-31	19:01:13	5762	141	-18668	T	nn	0.1233	1.0235	15N	80W	83	81	02m19s
38	-3	0508-Sep-11	02:52:52	5587	138	-18445	H3	nn	0.0827	1.0173	9N	160E	85	59	01m45s
39	-2	0526-Sep-22	10:50:08	5411	134	-18222	H	nn	0.0477	1.0111	2N	39E	87	38	01m08s
40	-1	0544-Oct-02	18:55:54	5235	130	-17999	H	nn	0.0207	1.0050	4S	85W	89	17	00m31s

Catalog of Solar Eclipses of Saros 91
Seq Num	Rel Num	Calendar Date	TD of Greatest Eclipse	ΔT s	ΔT Sigma s	Luna Num	Ecl Type	QLE	Gamma	Ecl Mag	Lat °	Long °	Sun Alt °	Path Width km	Central Dur
41	0	0562-Oct-14	03:07:16	5062	126	-17776	A	nn	-0.0009	0.9992	9S	151E	90	3	00m05s
42	1	0580-Oct-24	11:25:24	4890	123	-17553	A	nn	-0.0162	0.9938	14S	25E	89	22	00m40s
43	2	0598-Nov-04	19:48:08	4718	119	-17330	A	nn	-0.0270	0.9888	18S	101W	88	40	01m13s
44	3	0616-Nov-15	04:16:12	4549	116	-17107	A	nn	-0.0330	0.9843	21S	132E	88	56	01m43s
45	4	0634-Nov-26	12:45:53	4380	112	-16884	A	nn	-0.0367	0.9804	24S	4E	88	70	02m09s
46	5	0652-Dec-06	21:16:42	4212	109	-16661	A	nn	-0.0390	0.9771	25S	123W	88	82	02m31s
47	6	0670-Dec-18	05:46:37	4047	106	-16438	A	nn	-0.0414	0.9744	26S	111E	87	92	02m49s
48	7	0688-Dec-28	14:15:10	3882	102	-16215	A	nn	-0.0446	0.9723	26S	15W	87	99	03m01s
49	8	0707-Jan-08	22:38:02	3721	99	-15992	A	nn	-0.0519	0.9708	25S	140W	87	105	03m09s
50	9	0725-Jan-19	06:56:02	3564	96	-15769	A	nn	-0.0623	0.9696	23S	96E	86	109	03m14s
51	10	0743-Jan-30	15:05:47	3408	93	-15546	A	nn	-0.0790	0.9690	21S	26W	85	112	03m15s
52	11	0761-Feb-09	23:08:43	3257	90	-15323	A	nn	-0.1005	0.9686	19S	147W	84	113	03m15s
53	12	0779-Feb-21	07:00:01	3108	87	-15100	A	nn	-0.1311	0.9685	16S	95E	82	114	03m14s
54	13	0797-Mar-03	14:43:28	2959	84	-14877	A	nn	-0.1674	0.9685	14S	21W	80	115	03m14s
55	14	0815-Mar-14	22:14:55	2816	81	-14654	A	-n	-0.2127	0.9684	12S	134W	78	116	03m15s
56	15	0833-Mar-25	05:37:42	2675	78	-14431	A	-n	-0.2643	0.9683	10S	115E	75	117	03m18s
57	16	0851-Apr-05	12:48:48	2534	75	-14208	A	-p	-0.3250	0.9680	9S	8E	71	121	03m25s
58	17	0869-Apr-15	19:52:31	2403	72	-13985	A	-p	-0.3908	0.9674	9S	98W	67	126	03m35s
59	18	0887-Apr-27	02:46:21	2272	70	-13762	A	-p	-0.4640	0.9664	10S	158E	62	135	03m49s
60	19	0905-May-07	09:33:16	2145	67	-13539	A	-p	-0.5420	0.9649	13S	56E	57	149	04m07s
61	20	0923-May-18	16:13:25	2026	64	-13316	A	-p	-0.6246	0.9629	17S	45W	51	170	04m28s
62	21	0941-May-28	22:49:26	1908	62	-13093	A	-p	-0.7094	0.9603	22S	145W	45	203	04m49s
63	22	0959-Jun-09	05:21:57	1795	59	-12870	A	-p	-0.7965	0.9569	29S	115E	37	259	05m06s
64	23	0977-Jun-19	11:52:06	1688	57	-12647	A	-t	-0.8843	0.9526	39S	14E	28	373	05m16s
65	24	0995-Jun-30	18:22:37	1580	54	-12424	A	-t	-0.9707	0.9465	54S	88W	13	852	05m11s
66	25	1013-Jul-11	00:53:52	1485	52	-12201	P	-t	-1.0553	0.8699	68S	163E	0	-	-
67	26	1031-Jul-22	07:27:42	1394	50	-11978	P	-t	-1.1368	0.7289	69S	52E	0	-	-
68	27	1049-Aug-01	14:05:38	1302	47	-11755	P	-t	-1.2141	0.5959	70S	60W	0	-	-
69	28	1067-Aug-12	20:49:35	1221	45	-11532	P	-t	-1.2857	0.4736	71S	174W	0	-	-
70	29	1085-Aug-23	03:40:33	1141	43	-11309	P	-t	-1.3505	0.3636	71S	70E	0	-	-
71	30	1103-Sep-03	10:38:16	1063	41	-11086	P	-t	-1.4093	0.2648	72S	49W	0	-	-
72	31	1121-Sep-13	17:45:15	995	39	-10863	P	-t	-1.4600	0.1804	72S	170W	0	-	-
73	32	1139-Sep-25	01:00:35	927	37	-10640	P	-t	-1.5037	0.1082	72S	67E	0	-	-
74	33	1157-Oct-05	08:25:11	864	35	-10417	P	-t	-1.5396	0.0496	72S	59W	0	-	-
75	34	1175-Oct-16	15:57:42	806	33	-10194	Pe	-t	-1.5689	0.0021	71S	174E	0	-	-

Statistics for Solar Eclipses of Saros 91

Solar eclipses of Saros 91 all occur at the Moon’s ascending node and the Moon moves southward with each eclipse. The series began with a partial eclipse in the northern hemisphere on -0159 Aug 06. The series ended with a partial eclipse in the southern hemisphere on 1175 Oct 16. The total duration of Saros series 91 is 1334.23 years.

Summary of Saros 91

First Eclipse	-0159 Aug 06
Last Eclipse	1175 Oct 16
Series Duration	1334.23 Years
No. of Eclipses	75
Sequence	23P 14T 3H 25A 10P

Saros 91 is composed of 75 solar eclipses as follows:

Solar Eclipses of Saros 91
Eclipse Type	Symbol	Number	Percent
All Eclipses	-	75	100.0%
Partial	P	33	44.0%
Annular	A	25	33.3%
Total	T	14	18.7%
Hybrid	H	3	4.0%

Umbral eclipses (annular, total and hybrid) can be further classified as either: 1) Central (two limits), 2) Central (one limit) or 3) Non-Central (one limit). The statistical distribution of these classes in Saros series 91 appears in the following table.

Umbral Eclipses of Saros 91
Classification	Number	Percent
All Umbral Eclipses	42	100.0%
Central (two limits)	42	100.0%
Central (one limit)	0	0.0%
Non-Central (one limit)	0	0.0%

The 75 eclipses in Saros 91 occur in the following order : 23P 14T 3H 25A 10P

The longest and shortest central eclipses of Saros 91 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Solar Eclipses of Saros 91
Extrema Type	Date	Duration	Magnitude
Longest Annular Solar Eclipse	0977 Jun 19	05m16s	-
Shortest Annular Solar Eclipse	0562 Oct 14	00m05s	-
Longest Total Solar Eclipse	0382 Jun 27	04m03s	-
Shortest Total Solar Eclipse	0490 Aug 31	02m19s	-
Longest Hybrid Solar Eclipse	0508 Sep 11	01m45s	-
Shortest Hybrid Solar Eclipse	0544 Oct 02	00m31s	-
Largest Partial Solar Eclipse	0238 Apr 02	-	0.95198
Smallest Partial Solar Eclipse	1175 Oct 16	-	0.00210

Panorama of Solar Eclipses of Saros 91

Catalog of Saros Series of Solar Eclipses

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
Solar Eclipse Basics - a primer on solar eclipses

Catalog of Solar Eclipse Saros Series - covers Saros series -30 through 190
Six Millennium Catalog of Solar Eclipses - from -2999 to +3000 (3000 BCE to 3000 CE)
World Atlas of Solar Eclipse Maps - index page for world eclipse maps covering 5 millennia
Javascript Solar Eclipse Explorer - calculate all solar eclipses visible from a city

Thousand Year Canon of Solar Eclipses 1501 to 2500 - link to the publication

MrEclipse.com - eclipse resources and tips on photography
Solar Eclipses for Beginners - a primer on solar eclipse basics
How to Photograph a Solar Eclipse - instructions for imaging an eclipse of the Sun
MrEclipse Photo Index - an index of solar eclipse photographs

Eclipse Publications

by Fred Espenak

Calendar

The Gregorian calendar (also called the Western calendar) is internationally the most widely used civil calendar. It is named for Pope Gregory XIII, who introduced it in 1582. On this website, the Gregorian calendar is used for all calendar dates from 1582 Oct 15 onwards. Before that date, the Julian calendar is used. For more information on this topic, see Calendar Dates.

The Julian calendar does not include the year 0. Thus the year 1 BCE is followed by the year 1 CE (See: BCE/CE Dating Conventions). This is awkward for arithmetic calculations. Years in this catalog are numbered astronomically and include the year 0. Historians should note there is a difference of one year between astronomical dates and BCE dates. Thus, the astronomical year 0 corresponds to 1 BCE, and astronomical year -1 corresponds to 2 BCE, etc..

Eclipse Predictions

The eclipse predictions presented here were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates have been calculated with respect to the Moon's Center of Mass.

The largest uncertainty in the eclipse predictions is caused by fluctuations in Earth's rotation due primarily to tidal friction of the Moon. The resultant drift in apparent clock time is expressed as ΔT and is determined as follows:

pre-1950's: ΔT calculated from empirical fits to historical records derived by Morrison and Stephenson (2004)
1955-present: ΔT obtained from published observations
future: ΔT is extrapolated from current values weighted by the long term trend from tidal effects

A series of polynomial expressions have been derived to simplify the evaluation of ΔT for any time from -2999 to +3000. The uncertainty in ΔT over this period can be estimated from scatter in the measurements.

Acknowledgments

Some of the content on this web site is based on the books Five Millennium Canon of Solar Eclipses: -1999 to +3000 and 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.