Saros 68

Catalog of Lunar Eclipses of Saros 68

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 68

The table below lists the concise characteristics of every lunar eclipse belonging to Saros 68 . 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 68
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
1-36 -0595-Jul-1402:23:45 18532 466 -32090 N a- 1.4983 0.0986-0.8811 86.8 - -
2-35 -0577-Jul-2509:47:12 18256 459 -31867 N a- 1.4412 0.2062-0.7790124.8 - -
3-34 -0559-Aug-0417:16:59 17982 453 -31644 N h- 1.3896 0.3038-0.6873150.8 - -
4-33 -0541-Aug-1600:52:13 17710 446 -31421 N h- 1.3428 0.3928-0.6045170.8 - -
5-32 -0523-Aug-2608:34:31 17440 439 -31198 N h- 1.3026 0.4699-0.5338186.3 - -
6-31 -0505-Sep-0616:23:41 17172 432 -30975 N h- 1.2684 0.5358-0.4743198.6 - -
7-30 -0487-Sep-1700:20:56 16864 426 -30752 N h- 1.2414 0.5885-0.4280208.0 - -
8-29 -0469-Sep-2808:24:55 16551 419 -30529 N h- 1.2204 0.6303-0.3924215.4 - -
9-28 -0451-Oct-0816:35:18 16247 412 -30306 N h- 1.2051 0.6614-0.3673220.9 - -
10-27 -0433-Oct-2000:51:47 15952 406 -30083 N h- 1.1953 0.6820-0.3522224.9 - -
11-26 -0415-Oct-3009:13:48 15664 399 -29860 N h- 1.1911 0.6924-0.3469227.3 - -
12-25 -0397-Nov-1017:38:40 15384 393 -29637 N h- 1.1895 0.6976-0.3462228.9 - -
13-24 -0379-Nov-2102:05:53 15110 387 -29414 N h- 1.1906 0.6975-0.3502229.8 - -
14-23 -0361-Dec-0210:32:50 14843 380 -29191 N h- 1.1923 0.6960-0.3548230.4 - -
15-22 -0343-Dec-1218:59:16 14583 374 -28968 N h- 1.1943 0.6936-0.3598230.9 - -
16-21 -0325-Dec-2403:20:38 14328 368 -28745 N h- 1.1933 0.6964-0.3589232.1 - -
17-20 -0306-Jan-0311:38:31 14079 362 -28522 N h- 1.1903 0.7025-0.3541233.7 - -
18-19 -0288-Jan-1419:48:08 13836 355 -28299 N t- 1.1816 0.7188-0.3385236.8 - -
19-18 -0270-Jan-2503:51:20 13597 349 -28076 N t- 1.1685 0.7431-0.3146240.9 - -
20-17 -0252-Feb-0511:43:23 13364 343 -27853 N t- 1.1473 0.7820-0.2756246.8 - -
21-16 -0234-Feb-1519:27:35 13136 337 -27630 N t- 1.1204 0.8310-0.2262253.9 - -
22-15 -0216-Feb-2702:59:59 12912 332 -27407 N t- 1.0851 0.8957-0.1612262.6 - -
23-14 -0198-Mar-0910:22:38 12692 326 -27184 N t- 1.0423 0.9739-0.0825272.3 - -
24-13 -0180-Mar-1917:33:56 12477 320 -26961 P t- 0.9909 1.0680 0.0121283.1 26.5 -
25-12 -0162-Mar-3100:36:41 12266 314 -26738 P t- 0.9331 1.1739 0.1183294.1 82.0 -
26-11 -0144-Apr-1007:29:48 12058 308 -26515 P t- 0.8680 1.2934 0.2379305.5114.5 -
27-10 -0126-Apr-2114:14:35 11855 303 -26292 P t- 0.7966 1.4244 0.3687316.6140.2 -
28 -9 -0108-May-0120:52:07 11655 297 -26069 P t- 0.7197 1.5659 0.5096327.3161.6 -
29 -8 -0090-May-1303:24:24 11458 292 -25846 P t- 0.6386 1.7150 0.6578337.2179.6 -
30 -7 -0072-May-2309:51:57 11264 286 -25623 P t- 0.5542 1.8706 0.8121346.2194.7 -
31 -6 -0054-Jun-0316:16:57 11074 281 -25400 P t- 0.4681 2.0294 0.9692354.0207.2 -
32 -5 -0036-Jun-1322:41:02 10886 275 -25177 T t- 0.3815 2.1895 1.1272360.6217.1 56.7
33 -4 -0018-Jun-2505:06:28 10701 270 -24954 T pp 0.2961 2.3473 1.2824365.9224.6 80.1
34 -3 0000-Jul-0511:32:48 10518 265 -24731 T+ pp 0.2118 2.5035 1.4358370.0230.1 93.8
35 -2 0018-Jul-1618:04:00 10337 260 -24508 T+ pp 0.1317 2.6521 1.5812372.8233.6101.7
36 -1 0036-Jul-2700:39:32 10159 254 -24285 T+ pp 0.0552 2.7941 1.7198374.7235.4105.5
37 0 0054-Aug-0707:23:09 9982 249 -24062 T- pp -0.0145 2.8706 1.7927375.6235.8106.2
38 1 0072-Aug-1714:12:40 9806 244 -23839 T- pp -0.0794 2.7535 1.6718375.8235.1104.4
39 2 0090-Aug-2821:12:37 9632 239 -23616 T- pp -0.1358 2.6518 1.5664375.5233.6100.9
40 3 0108-Sep-0804:20:38 9459 234 -23393 T- pp -0.1857 2.5621 1.4730374.8231.6 96.1
Catalog of Lunar Eclipses of Saros 68
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 4 0126-Sep-1911:38:54 9287 229 -23170 T- pp -0.2271 2.4879 1.3954373.9229.4 90.7
42 5 0144-Sep-2919:05:45 9116 225 -22947 T- pp -0.2616 2.4262 1.3305372.9227.1 85.0
43 6 0162-Oct-1102:42:21 8944 220 -22724 T -p -0.2882 2.3788 1.2804372.0225.1 79.7
44 7 0180-Oct-2110:26:47 8774 215 -22501 T -p -0.3086 2.3425 1.2418371.2223.4 75.0
45 8 0198-Nov-0118:17:33 8603 210 -22278 T -p -0.3240 2.3151 1.2129370.4222.0 71.0
46 9 0216-Nov-1202:14:35 8432 206 -22055 T -p -0.3343 2.2966 1.1935369.7220.9 68.1
47 10 0234-Nov-2310:15:46 8261 201 -21832 T -p -0.3408 2.2847 1.1815369.1220.1 66.2
48 11 0252-Dec-0318:19:17 8089 196 -21609 T -p -0.3461 2.2747 1.1722368.3219.5 64.6
49 12 0270-Dec-1502:22:38 7917 192 -21386 T -p -0.3515 2.2639 1.1629367.4218.8 63.0
50 13 0288-Dec-2510:25:26 7744 188 -21163 T -p -0.3578 2.2513 1.1526366.4218.0 61.2
51 14 0307-Jan-0518:25:25 7570 183 -20940 T -p -0.3665 2.2337 1.1382365.0217.0 58.4
52 15 0325-Jan-1602:20:25 7395 179 -20717 T -p -0.3796 2.2078 1.1161363.2215.6 53.9
53 16 0343-Jan-2710:10:08 7220 174 -20494 T -p -0.3973 2.1731 1.0858361.0213.6 46.8
54 17 0361-Feb-0617:52:59 7044 170 -20271 T -t -0.4212 2.1267 1.0444358.2210.8 34.0
55 18 0379-Feb-1801:28:37 6867 166 -20048 P -t -0.4514 2.0685 0.9915354.8207.1 -
56 19 0397-Feb-2808:55:55 6689 162 -19825 P -t -0.4890 1.9967 0.9253350.7202.2 -
57 20 0415-Mar-1116:15:56 6511 158 -19602 P -t -0.5332 1.9127 0.8472345.6195.8 -
58 21 0433-Mar-2123:28:27 6333 154 -19379 P -t -0.5839 1.8168 0.7571339.6187.6 -
59 22 0451-Apr-0206:33:00 6154 150 -19156 P -t -0.6417 1.7076 0.6538332.4177.0 -
60 23 0469-Apr-1213:31:50 5977 146 -18933 P -t -0.7049 1.5889 0.5407323.9163.5 -
61 24 0487-Apr-2320:25:02 5800 142 -18710 P -t -0.7733 1.4607 0.4180314.0146.1 -
62 25 0505-May-0403:15:09 5624 138 -18487 P -t -0.8447 1.3270 0.2894302.6123.6 -
63 26 0523-May-1510:00:39 5447 134 -18264 P -t -0.9204 1.1857 0.1528289.3 91.3 -
64 27 0541-May-2516:46:27 5272 131 -18041 P -t -0.9967 1.0437 0.0150274.4 29.1 -
65 28 0559-Jun-0523:31:12 5097 127 -17818 N -t -1.0745 0.8990-0.1259257.5 - -
66 29 0577-Jun-1606:18:52 4925 124 -17595 N -t -1.1505 0.7578-0.2637238.9 - -
67 30 0595-Jun-2713:08:10 4753 120 -17372 N -t -1.2258 0.6183-0.4005217.9 - -
68 31 0613-Jul-0720:04:01 4583 116 -17149 N -t -1.2967 0.4871-0.5294195.1 - -
69 32 0631-Jul-1903:04:54 4414 113 -16926 N -t -1.3643 0.3621-0.6526169.5 - -
70 33 0649-Jul-2910:13:03 4246 110 -16703 N -t -1.4270 0.2464-0.7669140.8 - -
71 34 0667-Aug-0917:28:45 4081 106 -16480 N -t -1.4843 0.1409-0.8715107.1 - -
72 35 0685-Aug-2000:54:03 3917 103 -16257 Ne -h -1.5347 0.0480-0.9637 62.8 - -

Statistics for Lunar Eclipses of Saros 68

Lunar eclipses of Saros 68 all occur at the Moon’s ascending node and the Moon moves southward with each eclipse. The series will begin with a penumbral eclipse near the northern edge of the penumbra on -0595 Jul 14. The series will end with a penumbral eclipse near the southern edge of the penumbra on 0685 Aug 20. The total duration of Saros series 68 is 1280.14 years.

Summary of Saros 68
First Eclipse -0595 Jul 14
Last Eclipse 0685 Aug 20
Series Duration 1280.14 Years
No. of Eclipses 72
Sequence 23N 8P 23T 10P 8N

Saros 68 is composed of 72 lunar eclipses as follows:

Lunar Eclipses of Saros 68
Eclipse Type Symbol Number Percent
All Eclipses - 72100.0%
PenumbralN 31 43.1%
PartialP 18 25.0%
TotalT 23 31.9%

The 72 lunar eclipses of Saros 68 occur in the order of 23N 8P 23T 10P 8N which corresponds to the following.

Sequence Order of Lunar Eclipses in Saros 68
Eclipse Type Symbol Number
Penumbral N 23
Partial P 8
Total T 23
Partial P 10
Penumbral N 8

The longest and shortest eclipses of Saros 68 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Lunar Eclipses of Saros 68
Extrema Type Date Duration Magnitude
Longest Total Lunar Eclipse 0054 Aug 0701h46m09s -
Shortest Total Lunar Eclipse 0361 Feb 0600h34m03s -
Longest Partial Lunar Eclipse -0054 Jun 0303h27m09s -
Shortest Partial Lunar Eclipse -0180 Mar 1900h26m30s -
Longest Penumbral Lunar Eclipse -0198 Mar 0904h32m17s -
Shortest Penumbral Lunar Eclipse 0685 Aug 2001h02m51s -
Largest Partial Lunar Eclipse 0379 Feb 18 - 0.99150
Smallest Partial Lunar Eclipse -0180 Mar 19 - 0.01207

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.