Saros 81

Catalog of Solar Eclipses of Saros 81

Fred Espenak

Introduction

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 81

The table below lists the concise characteristics of every solar eclipse belonging to Saros 81 . 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 81
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
1-35 -0322-May-1211:40:49 14295 367 -28715 Pb t- 1.5330 0.0335 62N 62W 0 - -
2-34 -0304-May-2218:26:14 14047 361 -28492 P t- 1.4498 0.1802 63N 174W 0 - -
3-33 -0286-Jun-0301:10:30 13804 355 -28269 P t- 1.3643 0.3320 64N 75E 0 - -
4-32 -0268-Jun-1307:59:22 13566 349 -28046 P t- 1.2812 0.4805 64N 38W 0 - -
5-31 -0250-Jun-2414:50:25 13334 343 -27823 P t- 1.1988 0.6286 65N 152W 0 - -
6-30 -0232-Jul-0421:48:14 13106 337 -27600 P t- 1.1205 0.7702 66N 93E 0 - -
7-29 -0214-Jul-1604:50:58 12882 331 -27377 P t- 1.0449 0.9070 67N 25W 0 - -
8-28 -0196-Jul-2612:03:13 12663 325 -27154 A t- 0.9759 0.9909 79N 163W 12 15700m31s
9-27 -0178-Aug-0619:23:15 12449 319 -26931 A t- 0.9124 0.9949 79N 1W 24 4400m19s
10-26 -0160-Aug-1702:52:49 12238 313 -26708 A t- 0.8558 0.9973 70N 137W 31 1800m11s
11-25 -0142-Aug-2810:32:10 12031 308 -26485 A p- 0.8062 0.9988 62N 99E 36 700m05s
12-24 -0124-Sep-0718:22:00 11828 302 -26262 A p- 0.7643 0.9999 54N 24W 40 100m00s
13-23 -0106-Sep-1902:21:39 11628 297 -26039 H p- 0.7299 1.0006 47N 149W 43 300m03s
14-22 -0088-Sep-2910:30:05 11432 291 -25816 H p- 0.7021 1.0013 41N 85E 45 600m07s
15-21 -0070-Oct-1018:48:11 11239 286 -25593 H p- 0.6817 1.0020 35N 44W 47 900m11s
16-20 -0052-Oct-2103:13:51 11049 280 -25370 H p- 0.6667 1.0028 30N 173W 48 1300m16s
17-19 -0034-Nov-0111:46:29 10861 275 -25147 H p- 0.6571 1.0040 26N 55E 49 1800m23s
18-18 -0016-Nov-1120:24:04 10676 269 -24924 H p- 0.6509 1.0054 23N 77W 49 2500m33s
19-17 0002-Nov-2305:06:00 10494 264 -24701 H p- 0.6477 1.0074 20N 150E 49 3300m45s
20-16 0020-Dec-0313:49:34 10313 259 -24478 H p- 0.6455 1.0098 18N 16E 50 4401m01s
21-15 0038-Dec-1422:33:26 10135 254 -24255 H p- 0.6429 1.0128 17N 118W 50 5701m19s
22-14 0056-Dec-2507:16:18 9958 249 -24032 T p- 0.6387 1.0163 16N 109E 50 7301m40s
23-13 0075-Jan-0515:56:46 9783 244 -23809 T p- 0.6318 1.0204 16N 24W 51 8902m01s
24-12 0093-Jan-1600:32:16 9609 239 -23586 T p- 0.6204 1.0250 16N 155W 52 10702m25s
25-11 0111-Jan-2709:02:46 9436 234 -23363 T p- 0.6042 1.0299 16N 75E 53 12602m47s
26-10 0129-Feb-0617:26:43 9264 229 -23140 T p- 0.5821 1.0354 17N 53W 54 14403m10s
27 -9 0147-Feb-1801:44:44 9093 224 -22917 T p- 0.5542 1.0409 18N 179W 56 16203m32s
28 -8 0165-Feb-2809:53:49 8922 219 -22694 T p- 0.5185 1.0467 19N 57E 59 17903m54s
29 -7 0183-Mar-1117:56:51 8751 214 -22471 T p- 0.4772 1.0523 21N 64W 61 19504m14s
30 -6 0201-Mar-2201:51:23 8580 210 -22248 T p- 0.4285 1.0578 22N 177E 64 20904m35s
31 -5 0219-Apr-0209:40:37 8409 205 -22025 T n- 0.3749 1.0629 24N 59E 68 22104m56s
32 -4 0237-Apr-1217:21:39 8238 200 -21802 T n- 0.3140 1.0677 25N 55W 72 23205m18s
33 -3 0255-Apr-2400:59:04 8066 196 -21579 T n- 0.2495 1.0718 25N 169W 75 24105m39s
34 -2 0273-May-0408:30:38 7894 191 -21356 T n- 0.1801 1.0753 25N 79E 79 24806m02s
35 -1 0291-May-1515:59:50 7721 187 -21133 T nn 0.1083 1.0781 25N 32W 84 25406m24s
36 0 0309-May-2523:25:56 7547 183 -20910 T nn 0.0335 1.0799 23N 142W 88 25806m45s
37 1 0327-Jun-0606:52:09 7372 178 -20687 Tm nn -0.0412 1.0810 21N 107E 88 26107m03s
38 2 0345-Jun-1614:18:36 7197 174 -20464 T nn -0.1161 1.0811 17N 4W 83 26307m17s
39 3 0363-Jun-2721:46:17 7020 170 -20241 T -n -0.1898 1.0804 13N 117W 79 26407m24s
40 4 0381-Jul-0805:16:57 6843 166 -20018 T -n -0.2611 1.0788 8N 129E 75 26407m22s
Catalog of Solar Eclipses of Saros 81
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 5 0399-Jul-1912:51:28 6665 161 -19795 T -n -0.3289 1.0764 2N 14E 71 26207m11s
42 6 0417-Jul-2920:30:55 6487 157 -19572 T -n -0.3927 1.0734 4S 103W 67 25906m50s
43 7 0435-Aug-1004:15:53 6309 153 -19349 T -p -0.4515 1.0697 11S 138E 63 25406m22s
44 8 0453-Aug-2012:07:42 6131 149 -19126 T -p -0.5044 1.0656 17S 16E 60 24705m50s
45 9 0471-Aug-3120:06:58 5953 145 -18903 T -p -0.5507 1.0611 24S 107W 56 23905m15s
46 10 0489-Sep-1104:12:50 5777 142 -18680 T -p -0.5912 1.0564 30S 128E 54 22904m40s
47 11 0507-Sep-2212:26:54 5600 138 -18457 T -p -0.6246 1.0516 37S 1E 51 21704m06s
48 12 0525-Oct-0220:48:02 5424 134 -18234 T -p -0.6521 1.0469 43S 128W 49 20503m35s
49 13 0543-Oct-1405:17:00 5248 130 -18011 T -p -0.6725 1.0424 49S 103E 47 19103m07s
50 14 0561-Oct-2413:50:50 5074 127 -17788 T -p -0.6887 1.0381 54S 27W 46 17602m43s
51 15 0579-Nov-0422:31:36 4902 123 -17565 T -p -0.6990 1.0344 59S 157W 45 16202m24s
52 16 0597-Nov-1507:16:04 4730 119 -17342 T -p -0.7063 1.0310 64S 75E 45 14802m07s
53 17 0615-Nov-2616:04:15 4560 116 -17119 T -p -0.7104 1.0282 67S 52W 44 13701m54s
54 18 0633-Dec-0700:52:56 4392 113 -16896 T -p -0.7139 1.0258 69S 175W 44 12601m43s
55 19 0651-Dec-1809:42:20 4224 109 -16673 T -p -0.7166 1.0241 69S 63E 44 11801m36s
56 20 0669-Dec-2818:29:25 4059 106 -16450 T -p -0.7211 1.0227 68S 59W 44 11201m30s
57 21 0688-Jan-0903:13:00 3896 103 -16227 T -p -0.7283 1.0218 66S 178E 43 10801m27s
58 22 0706-Jan-1911:51:40 3734 99 -16004 T -p -0.7394 1.0211 63S 53E 42 10701m24s
59 23 0724-Jan-3020:24:25 3575 96 -15781 T -p -0.7551 1.0207 59S 73W 41 10701m23s
60 24 0742-Feb-1004:48:48 3418 93 -15558 T -p -0.7773 1.0203 56S 163E 39 10901m23s
61 25 0760-Feb-2113:05:06 3264 90 -15335 T -p -0.8056 1.0199 54S 40E 36 11301m22s
62 26 0778-Mar-0321:12:16 3113 87 -15112 T -p -0.8410 1.0192 52S 81W 32 11901m20s
63 27 0796-Mar-1405:11:02 2965 84 -14889 T -t -0.8829 1.0181 51S 160E 28 12901m16s
64 28 0814-Mar-2512:58:57 2821 81 -14666 T -t -0.9331 1.0161 53S 47E 21 15201m07s
65 29 0832-Apr-0420:39:09 2679 78 -14443 T -t -0.9888 1.0120 58S 56W 8 30300m47s
66 30 0850-Apr-1604:09:47 2542 75 -14220 P -t -1.0515 0.9047 61S 164W 0 - -
67 31 0868-Apr-2611:33:58 2408 72 -13997 P -t -1.1188 0.7800 62S 75E 0 - -
68 32 0886-May-0718:49:08 2278 70 -13774 P -t -1.1925 0.6436 63S 43W 0 - -
69 33 0904-May-1802:00:15 2153 67 -13551 P -t -1.2686 0.5033 63S 161W 0 - -
70 34 0922-May-2909:05:16 2031 64 -13328 P -t -1.3482 0.3572 64S 83E 0 - -
71 35 0940-Jun-0816:07:34 1914 62 -13105 P -t -1.4290 0.2098 65S 33W 0 - -
72 36 0958-Jun-1923:06:47 1802 59 -12882 Pe -t -1.5110 0.0614 66S 148W 0 - -

Statistics for Solar Eclipses of Saros 81

Solar eclipses of Saros 81 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 -0322 May 12. The series ended with a partial eclipse in the southern hemisphere on 0958 Jun 19. The total duration of Saros series 81 is 1280.14 years.

Summary of Saros 81
First Eclipse -0322 May 12
Last Eclipse 0958 Jun 19
Series Duration 1280.14 Years
No. of Eclipses 72
Sequence 7P 5A 9H 44T 7P

Saros 81 is composed of 72 solar eclipses as follows:

Solar Eclipses of Saros 81
Eclipse Type Symbol Number Percent
All Eclipses - 72100.0%
PartialP 14 19.4%
AnnularA 5 6.9%
TotalT 44 61.1%
HybridH 9 12.5%

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 81 appears in the following table.

Umbral Eclipses of Saros 81
Classification Number Percent
All Umbral Eclipses 58100.0%
Central (two limits) 58100.0%
Central (one limit) 0 0.0%
Non-Central (one limit) 0 0.0%

The 72 eclipses in Saros 81 occur in the following order : 7P 5A 9H 44T 7P

The longest and shortest central eclipses of Saros 81 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Solar Eclipses of Saros 81
Extrema Type Date Duration Magnitude
Longest Annular Solar Eclipse -0196 Jul 2600m31s -
Shortest Annular Solar Eclipse -0124 Sep 0700m00s -
Longest Total Solar Eclipse 0363 Jun 2707m24s -
Shortest Total Solar Eclipse 0832 Apr 0400m47s -
Longest Hybrid Solar Eclipse 0038 Dec 1401m19s -
Shortest Hybrid Solar Eclipse -0106 Sep 1900m03s -
Largest Partial Solar Eclipse -0214 Jul 16 - 0.90696
Smallest Partial Solar Eclipse -0322 May 12 - 0.03352

Links to Additional Solar Eclipse Predictions

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:

  1. pre-1950's: ΔT calculated from empirical fits to historical records derived by Morrison and Stephenson (2004)
  2. 1955-present: ΔT obtained from published observations
  3. 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 data from this page when accompanied by 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.