Saros 11

Catalog of Lunar Eclipses of Saros 11

Fred Espenak

Introduction

The periodicity and recurrence of lunar 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 penumbral lunar eclipses. The series will then produce several dozen partial eclipses, followed by several dozen total eclipses. The later portion of the series produces another set of partial eclipses before ending with a final group of penumbral eclipses.

Catalog of Lunar Eclipses of Saros 11

The table below lists the concise characteristics of every lunar eclipse belonging to Saros 11 . 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 along with a diagram of the eclipse geometry 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 Lunar Eclipses.

Catalog of Lunar Eclipses of Saros 11
Seq Num Rel Num Calendar Date TD of Greatest Eclipse ΔT

s
ΔT Sigma
s
Luna Num Ecl Type QSE Gamma Pen Mag Um Mag Pen Dur
m
Par Dur
m
Tot Dur
m
1-34 -2371-Jun-2912:49:51 55877 5432 -54057 Nb t- -1.5294 0.0891-0.9848 92.4 - -
2-33 -2353-Jul-1019:24:11 55397 5343 -53834 N t- -1.4589 0.2201-0.8571143.7 - -
3-32 -2335-Jul-2102:06:47 54919 5254 -53611 N t- -1.3943 0.3402-0.7403176.9 - -
4-31 -2317-Aug-0108:58:39 54443 5166 -53388 N t- -1.3369 0.4473-0.6365201.0 - -
5-30 -2299-Aug-1115:58:56 53969 5079 -53165 N t- -1.2857 0.5429-0.5443219.6 - -
6-29 -2281-Aug-2223:10:24 53497 4992 -52942 N t- -1.2430 0.6228-0.4676233.5 - -
7-28 -2263-Sep-0206:31:24 53027 4906 -52719 N t- -1.2076 0.6894-0.4039244.1 - -
8-27 -2245-Sep-1314:03:24 52560 4821 -52496 N t- -1.1805 0.7403-0.3555251.7 - -
9-26 -2227-Sep-2321:42:46 52094 4736 -52273 N t- -1.1590 0.7808-0.3171257.3 - -
10-25 -2209-Oct-0505:32:03 51631 4652 -52050 N t- -1.1452 0.8069-0.2924260.8 - -
11-24 -2191-Oct-1513:27:00 51169 4569 -51827 N t- -1.1355 0.8251-0.2751262.9 - -
12-23 -2173-Oct-2621:27:53 50710 4486 -51604 N t- -1.1301 0.8350-0.2651263.9 - -
13-22 -2155-Nov-0605:31:25 50253 4404 -51381 N t- -1.1263 0.8415-0.2579264.3 - -
14-21 -2137-Nov-1713:37:34 49798 4323 -51158 N t- -1.1239 0.8450-0.2527264.3 - -
15-20 -2119-Nov-2721:42:53 49345 4242 -50935 N t- -1.1205 0.8501-0.2451264.3 - -
16-19 -2101-Dec-0905:46:07 48893 4163 -50712 N t- -1.1145 0.8594-0.2325264.8 - -
17-18 -2083-Dec-1913:45:57 48445 4083 -50489 N t- -1.1050 0.8748-0.2131266.0 - -
18-17 -2065-Dec-3021:41:01 47998 4005 -50266 N t- -1.0907 0.8987-0.1844268.1 - -
19-16 -2046-Jan-1005:28:45 47553 3927 -50043 N t- -1.0697 0.9346-0.1432271.4 - -
20-15 -2028-Jan-2113:09:36 47110 3850 -49820 N t- -1.0422 0.9821-0.0900275.8 - -
21-14 -2010-Jan-3120:42:27 46669 3774 -49597 Nx t- -1.0072 1.0431-0.0228281.3 - -
22-13 -1992-Feb-1204:08:24 46231 3698 -49374 P t- -0.9655 1.1165 0.0569287.5 57.1 -
23-12 -1974-Feb-2211:24:34 45794 3623 -49151 P t- -0.9148 1.2063 0.1531294.7 92.1 -
24-11 -1956-Mar-0418:34:49 45360 3548 -48928 P t- -0.8583 1.3068 0.2600301.9117.8 -
25-10 -1938-Mar-1601:36:44 44927 3475 -48705 P t- -0.7939 1.4217 0.3812309.4139.6 -
26 -9 -1920-Mar-2608:34:20 44497 3402 -48482 P t- -0.7249 1.5453 0.5108316.4157.9 -
27 -8 -1902-Apr-0615:25:33 44069 3330 -48259 P t- -0.6493 1.6812 0.6523323.1173.9 -
28 -7 -1884-Apr-1622:15:12 43642 3258 -48036 P h- -0.5712 1.8219 0.7983328.9187.1 -
29 -6 -1866-Apr-2805:02:02 43218 3187 -47813 P h- -0.4897 1.9690 0.9502333.8198.0 -
30 -5 -1848-May-0811:48:56 42796 3117 -47590 T h- -0.4070 2.1186 1.1041337.7206.7 49.8
31 -4 -1830-May-1918:36:39 42376 3047 -47367 T a- -0.3237 2.2694 1.2586340.5213.3 74.4
32 -3 -1812-May-3001:27:21 41958 2979 -47144 T- p- -0.2419 2.4179 1.4104342.3218.0 88.4
33 -2 -1794-Jun-1008:22:31 41542 2910 -46921 T- pp -0.1624 2.5625 1.5575343.1220.9 96.7
34 -1 -1776-Jun-2015:22:23 41129 2843 -46698 T- pp -0.0858 2.7020 1.6992343.0222.2101.1
35 0 -1758-Jul-0122:30:00 40717 2776 -46475 T- pp -0.0146 2.8318 1.8304342.1222.3102.5
36 1 -1740-Jul-1205:44:49 40307 2710 -46252 T+ pp 0.0513 2.7640 1.7638340.6221.3101.7
37 2 -1722-Jul-2313:09:10 39900 2645 -46029 T+ pp 0.1103 2.6553 1.6558338.7219.5 99.1
38 3 -1704-Aug-0220:41:52 39494 2580 -45806 T+ pp 0.1632 2.5580 1.5588336.5217.2 95.3
39 4 -1686-Aug-1404:25:31 39091 2516 -45583 T+ pp 0.2080 2.4759 1.4769334.3214.7 90.8
40 5 -1668-Aug-2412:18:22 38689 2453 -45360 T+ -p 0.2455 2.4071 1.4079332.0212.1 86.0
Catalog of Lunar Eclipses of Saros 11
Seq Num Rel Num Calendar Date TD of Greatest Eclipse ΔT

s
ΔT Sigma
s
Luna Num Ecl Type QSE Gamma Pen Mag Um Mag Pen Dur
m
Par Dur
m
Tot Dur
m
41 6 -1650-Sep-0420:21:11 38290 2391 -45137 T -p 0.2755 2.3521 1.3529329.9209.8 81.4
42 7 -1632-Sep-1504:33:19 37893 2329 -44914 T -p 0.2984 2.3101 1.3108328.1207.7 77.3
43 8 -1614-Sep-2612:55:09 37498 2268 -44691 T -p 0.3142 2.2811 1.2818326.5206.0 74.2
44 9 -1596-Oct-0621:24:35 37104 2207 -44468 T -p 0.3241 2.2628 1.2638325.1204.8 72.0
45 10 -1578-Oct-1806:00:45 36713 2148 -44245 T -p 0.3292 2.2531 1.2548324.0203.9 70.8
46 11 -1560-Oct-2814:42:06 36325 2089 -44022 T -p 0.3306 2.2500 1.2528323.0203.4 70.4
47 12 -1542-Nov-0823:28:08 35938 2030 -43799 T -p 0.3289 2.2522 1.2566322.2203.1 70.7
48 13 -1524-Nov-1908:15:06 35553 1973 -43576 T -p 0.3272 2.2544 1.2609321.3202.8 71.1
49 14 -1506-Nov-3017:03:23 35170 1916 -43353 T -p 0.3250 2.2571 1.2662320.5202.6 71.6
50 15 -1488-Dec-1101:49:11 34789 1860 -43130 T -p 0.3256 2.2544 1.2666319.5202.3 71.5
51 16 -1470-Dec-2210:33:23 34411 1804 -42907 T -p 0.3279 2.2483 1.2641318.4201.8 71.1
52 17 -1451-Jan-0119:10:57 34034 1750 -42684 T -p 0.3365 2.2305 1.2503317.0201.0 69.5
53 18 -1433-Jan-1303:44:51 33660 1696 -42461 T -p 0.3487 2.2061 1.2301315.5199.9 67.0
54 19 -1415-Jan-2312:10:20 33287 1643 -42238 T -p 0.3685 2.1676 1.1960313.6198.2 62.5
55 20 -1397-Feb-0320:29:34 32917 1590 -42015 T -p 0.3938 2.1188 1.1518311.3195.9 55.8
56 21 -1379-Feb-1404:39:19 32549 1538 -41792 T -p 0.4274 2.0548 1.0923308.5192.8 44.3
57 22 -1361-Feb-2512:42:59 32183 1487 -41569 T -a 0.4665 1.9809 1.0227305.3188.8 22.4
58 23 -1343-Mar-0720:38:09 31819 1437 -41346 P -a 0.5133 1.8929 0.9389301.3183.4 -
59 24 -1325-Mar-1904:26:04 31457 1387 -41123 P -a 0.5665 1.7935 0.8432296.5176.6 -
60 25 -1307-Mar-2912:07:15 31097 1338 -40900 P -a 0.6255 1.6835 0.7366290.9167.9 -
61 26 -1289-Apr-0919:43:16 30739 1290 -40677 P -a 0.6891 1.5654 0.6213284.2157.1 -
62 27 -1271-Apr-2003:14:25 30383 1243 -40454 P -a 0.7570 1.4397 0.4978276.5143.3 -
63 28 -1253-May-0110:41:52 30029 1196 -40231 P -a 0.8284 1.3079 0.3676267.4125.5 -
64 29 -1235-May-1118:07:13 29677 1150 -40008 P -a 0.9015 1.1733 0.2339257.1102.0 -
65 30 -1217-May-2301:31:56 29328 1105 -39785 P -a 0.9751 1.0382 0.0990245.4 67.6 -
66 31 -1199-Jun-0208:55:44 28980 1061 -39562 N -a 1.0493 0.9023-0.0373232.2 - -
67 32 -1181-Jun-1316:21:32 28635 1017 -39339 N -a 1.1218 0.7698-0.1710217.6 - -
68 33 -1163-Jun-2323:49:12 28291 974 -39116 N -a 1.1923 0.6413-0.3013201.4 - -
69 34 -1145-Jul-0507:21:36 27950 932 -38893 N -a 1.2588 0.5206-0.4246183.9 - -
70 35 -1127-Jul-1514:57:07 27611 890 -38670 N -a 1.3223 0.4056-0.5425164.3 - -
71 36 -1109-Jul-2622:39:53 27274 850 -38447 N -a 1.3795 0.3025-0.6491143.6 - -
72 37 -1091-Aug-0606:28:12 26938 810 -38224 N -a 1.4317 0.2088-0.7469120.6 - -
73 38 -1073-Aug-1714:24:46 26605 771 -38001 N -a 1.4770 0.1277-0.8323 95.2 - -
74 39 -1055-Aug-2722:27:38 26274 733 -37778 N -a 1.5170 0.0566-0.9079 64.0 - -

Statistics for Lunar Eclipses of Saros 11

Lunar eclipses of Saros 11 all occur at the Moon’s descending node and the Moon moves northward with each eclipse. The series will begin with a penumbral eclipse near the southern edge of the penumbra on -2371 Jun 29. The series will end with a penumbral eclipse near the northern edge of the penumbra on -1055 Aug 27. The total duration of Saros series 11 is 1316.20 years.

Summary of Saros 11
First Eclipse -2371 Jun 29
Last Eclipse -1055 Aug 27
Series Duration 1316.20 Years
No. of Eclipses 74
Sequence 21N 8P 28T 8P 9N

Saros 11 is composed of 74 lunar eclipses as follows:

Lunar Eclipses of Saros 11
Eclipse Type Symbol Number Percent
All Eclipses - 74100.0%
PenumbralN 30 40.5%
PartialP 16 21.6%
TotalT 28 37.8%

The 74 lunar eclipses of Saros 11 occur in the order of 21N 8P 28T 8P 9N which corresponds to the following.

Sequence Order of Lunar Eclipses in Saros 11
Eclipse Type Symbol Number
Penumbral N 21
Partial P 8
Total T 28
Partial P 8
Penumbral N 9

The longest and shortest eclipses of Saros 11 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Lunar Eclipses of Saros 11
Extrema Type Date Duration Magnitude
Longest Total Lunar Eclipse -1758 Jul 0101h42m33s -
Shortest Total Lunar Eclipse -1361 Feb 2500h22m24s -
Longest Partial Lunar Eclipse -1866 Apr 2803h18m02s -
Shortest Partial Lunar Eclipse -1992 Feb 1200h57m04s -
Longest Penumbral Lunar Eclipse -2010 Jan 3104h41m18s -
Shortest Penumbral Lunar Eclipse -1055 Aug 2701h03m57s -
Largest Partial Lunar Eclipse -1866 Apr 28 - 0.95016
Smallest Partial Lunar Eclipse -1992 Feb 12 - 0.05694

Links to Additional Lunar 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 Lunar Eclipses: -1999 to +3000 and Thousand Year Canon of Lunar 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.