Saros 73

Catalog of Lunar Eclipses of Saros 73

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 73

The table below lists the concise characteristics of every lunar eclipse belonging to Saros 73 . 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 73
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 -0378-May-1614:32:34 15103 386 -29408 Nb a- -1.4960 0.0964-0.8706 84.9 - -
2-35 -0360-May-2621:47:35 14836 380 -29185 N a- -1.4188 0.2366-0.7273130.8 - -
3-34 -0342-Jun-0705:02:30 14576 374 -28962 N a- -1.3405 0.3788-0.5824162.8 - -
4-33 -0324-Jun-1712:20:50 14321 368 -28739 N a- -1.2644 0.5174-0.4419187.2 - -
5-32 -0306-Jun-2819:41:48 14073 361 -28516 N a- -1.1900 0.6534-0.3047207.0 - -
6-31 -0288-Jul-0903:08:29 13829 355 -28293 N a- -1.1194 0.7825-0.1748223.0 - -
7-30 -0270-Jul-2010:39:37 13591 349 -28070 N a- -1.0521 0.9060-0.0512236.4 - -
8-29 -0252-Jul-3018:19:04 13358 343 -27847 P a- -0.9911 1.0182 0.0605247.2 53.7 -
9-28 -0234-Aug-1102:04:47 13130 337 -27624 P a- -0.9350 1.1215 0.1630256.1 86.7 -
10-27 -0216-Aug-2109:59:09 12906 331 -27401 P a- -0.8858 1.2125 0.2527263.2106.5 -
11-26 -0198-Sep-0118:01:13 12686 326 -27178 P a- -0.8425 1.2926 0.3313269.0120.3 -
12-25 -0180-Sep-1202:13:12 12471 320 -26955 P a- -0.8071 1.3585 0.3955273.5130.1 -
13-24 -0162-Sep-2310:32:55 12260 314 -26732 P a- -0.7782 1.4124 0.4476276.9137.1 -
14-23 -0144-Oct-0319:00:58 12053 308 -26509 P a- -0.7558 1.4543 0.4878279.4142.1 -
15-22 -0126-Oct-1503:36:22 11849 303 -26286 P a- -0.7396 1.4849 0.5168281.2145.5 -
16-21 -0108-Oct-2512:18:50 11649 297 -26063 P a- -0.7289 1.5052 0.5357282.3147.6 -
17-20 -0090-Nov-0521:05:46 11453 292 -25840 P a- -0.7220 1.5184 0.5479283.0148.9 -
18-19 -0072-Nov-1605:57:01 11259 286 -25617 P a- -0.7186 1.5249 0.5536283.3149.5 -
19-18 -0054-Nov-2714:49:56 11069 281 -25394 P a- -0.7167 1.5285 0.5570283.5149.8 -
20-17 -0036-Dec-0723:44:30 10881 275 -25171 P a- -0.7163 1.5293 0.5579283.5149.9 -
21-16 -0018-Dec-1908:36:32 10696 270 -24948 P a- -0.7138 1.5335 0.5628283.7150.4 -
22-15 0000-Dec-2917:27:29 10513 265 -24725 P a- -0.7105 1.5390 0.5693284.0151.2 -
23-14 0019-Jan-1002:13:01 10332 259 -24502 P a- -0.7028 1.5526 0.5842284.8152.8 -
24-13 0037-Jan-2010:54:14 10154 254 -24279 P a- -0.6918 1.5718 0.6051285.9155.1 -
25-12 0055-Jan-3119:27:16 9977 249 -24056 P a- -0.6741 1.6034 0.6386287.7158.6 -
26-11 0073-Feb-1103:54:44 9801 244 -23833 P a- -0.6520 1.6430 0.6802289.9162.7 -
27-10 0091-Feb-2212:13:16 9627 239 -23610 P a- -0.6223 1.6964 0.7356292.7167.9 -
28 -9 0109-Mar-0420:23:58 9454 234 -23387 P a- -0.5865 1.7611 0.8023296.0173.6 -
29 -8 0127-Mar-1604:25:32 9282 229 -23164 P a- -0.5433 1.8395 0.8823299.8179.8 -
30 -7 0145-Mar-2612:19:48 9111 224 -22941 P a- -0.4944 1.9285 0.9728303.7186.1 -
31 -6 0163-Apr-0620:06:04 8940 220 -22718 T a- -0.4389 2.0298 1.0750307.7192.3 40.2
32 -5 0181-Apr-1703:44:48 8769 215 -22495 T p- -0.3776 2.1420 1.1878311.7198.2 61.6
33 -4 0199-Apr-2811:17:36 8598 210 -22272 T p- -0.3117 2.2630 1.3088315.5203.5 76.1
34 -3 0217-May-0818:45:04 8427 205 -22049 T- p- -0.2420 2.3911 1.4363318.8208.0 86.5
35 -2 0235-May-2002:07:54 8256 201 -21826 T- pp -0.1690 2.5257 1.5697321.7211.6 94.0
36 -1 0253-May-3009:27:42 8084 196 -21603 T- pp -0.0939 2.6644 1.7066324.0214.1 98.6
37 0 0271-Jun-1016:45:22 7912 192 -21380 T- pp -0.0178 2.8053 1.8450325.6215.4100.6
38 1 0289-Jun-2100:03:06 7739 187 -21157 T+ pp 0.0576 2.7339 1.7705326.6215.6100.1
39 2 0307-Jul-0207:20:12 7565 183 -20934 T+ -p 0.1327 2.5979 1.6308326.9214.6 96.9
40 3 0325-Jul-1214:40:33 7391 179 -20711 T+ -p 0.2042 2.4689 1.4975326.6212.5 91.2
Catalog of Lunar Eclipses of Saros 73
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 0343-Jul-2322:03:20 7215 174 -20488 T -p 0.2728 2.3454 1.3692325.7209.4 82.7
42 5 0361-Aug-0305:31:34 7039 170 -20265 T -a 0.3363 2.2317 1.2502324.5205.6 71.1
43 6 0379-Aug-1413:03:57 6862 166 -20042 T -a 0.3954 2.1261 1.1389323.0201.1 55.0
44 7 0397-Aug-2420:43:38 6684 162 -19819 T -a 0.4475 2.0334 1.0402321.4196.4 30.6
45 8 0415-Sep-0504:29:15 6506 158 -19596 P -a 0.4939 1.9515 0.9521319.8191.4 -
46 9 0433-Sep-1512:22:04 6328 154 -19373 P -a 0.5334 1.8822 0.8766318.5186.7 -
47 10 0451-Sep-2620:21:55 6150 150 -19150 P -a 0.5663 1.8249 0.8130317.4182.3 -
48 11 0469-Oct-0704:29:11 5972 146 -18927 P -a 0.5925 1.7799 0.7621316.7178.6 -
49 12 0487-Oct-1812:43:03 5795 142 -18704 P -a 0.6121 1.7468 0.7231316.5175.6 -
50 13 0505-Oct-2821:01:39 5619 138 -18481 P -a 0.6272 1.7218 0.6928316.5173.2 -
51 14 0523-Nov-0905:25:52 5442 134 -18258 P -a 0.6368 1.7067 0.6727317.1171.7 -
52 15 0541-Nov-1913:52:47 5267 131 -18035 P -a 0.6438 1.6961 0.6577317.8170.7 -
53 16 0559-Nov-3022:22:05 5093 127 -17812 P -a 0.6479 1.6904 0.6482318.7170.2 -
54 17 0577-Dec-1106:50:28 4920 123 -17589 P -a 0.6523 1.6839 0.6386319.6169.7 -
55 18 0595-Dec-2215:18:25 4748 120 -17366 P -a 0.6565 1.6776 0.6297320.4169.2 -
56 19 0614-Jan-0123:42:25 4578 116 -17143 P -a 0.6633 1.6660 0.6162320.8168.3 -
57 20 0632-Jan-1308:01:54 4409 113 -16920 P -a 0.6733 1.6484 0.5973320.8166.7 -
58 21 0650-Jan-2316:14:28 4242 109 -16697 P -a 0.6884 1.6211 0.5691320.2163.9 -
59 22 0668-Feb-0400:19:59 4076 106 -16474 P -a 0.7086 1.5842 0.5318318.9159.9 -
60 23 0686-Feb-1408:15:45 3913 103 -16251 P -h 0.7361 1.5337 0.4813316.6153.8 -
61 24 0704-Feb-2516:02:20 3751 100 -16028 P -h 0.7705 1.4706 0.4183313.2145.2 -
62 25 0722-Mar-0723:38:20 3592 96 -15805 P -t 0.8127 1.3931 0.3411308.5133.0 -
63 26 0740-Mar-1807:05:06 3435 93 -15582 P -t 0.8616 1.3031 0.2514302.3116.1 -
64 27 0758-Mar-2914:19:42 3281 90 -15359 P -t 0.9194 1.1969 0.1455293.9 89.9 -
65 28 0776-Apr-0821:25:53 3129 87 -15136 P -t 0.9830 1.0803 0.0288283.5 40.8 -
66 29 0794-Apr-2004:21:37 2981 84 -14913 N -t 1.0539 0.9503-0.1012270.3 - -
67 30 0812-Apr-3011:11:16 2836 81 -14690 N -t 1.1289 0.8129-0.2391254.3 - -
68 31 0830-May-1117:51:15 2694 78 -14467 N -t 1.2104 0.6637-0.3891233.8 - -
69 32 0848-May-2200:28:14 2556 76 -14244 N -t 1.2932 0.5123-0.5416209.0 - -
70 33 0866-Jun-0206:59:11 2422 73 -14021 N -t 1.3794 0.3551-0.7004177.1 - -
71 34 0884-Jun-1213:29:08 2292 70 -13798 N -t 1.4652 0.1985-0.8590134.6 - -
72 35 0902-Jun-2319:56:08 2166 67 -13575 Ne -t 1.5524 0.0398-1.0201 61.3 - -

Statistics for Lunar Eclipses of Saros 73

Lunar eclipses of Saros 73 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 -0378 May 16. The series will end with a penumbral eclipse near the northern edge of the penumbra on 0902 Jun 23. The total duration of Saros series 73 is 1280.14 years.

Summary of Saros 73
First Eclipse -0378 May 16
Last Eclipse 0902 Jun 23
Series Duration 1280.14 Years
No. of Eclipses 72
Sequence 7N 23P 14T 21P 7N

Saros 73 is composed of 72 lunar eclipses as follows:

Lunar Eclipses of Saros 73
Eclipse Type Symbol Number Percent
All Eclipses - 72100.0%
PenumbralN 14 19.4%
PartialP 44 61.1%
TotalT 14 19.4%

The 72 lunar eclipses of Saros 73 occur in the order of 7N 23P 14T 21P 7N which corresponds to the following.

Sequence Order of Lunar Eclipses in Saros 73
Eclipse Type Symbol Number
Penumbral N 7
Partial P 23
Total T 14
Partial P 21
Penumbral N 7

The longest and shortest eclipses of Saros 73 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Lunar Eclipses of Saros 73
Extrema Type Date Duration Magnitude
Longest Total Lunar Eclipse 0271 Jun 1001h40m38s -
Shortest Total Lunar Eclipse 0397 Aug 2400h30m35s -
Longest Partial Lunar Eclipse 0415 Sep 0503h11m27s -
Shortest Partial Lunar Eclipse 0776 Apr 0800h40m48s -
Longest Penumbral Lunar Eclipse 0794 Apr 2004h30m21s -
Shortest Penumbral Lunar Eclipse 0902 Jun 2301h01m19s -
Largest Partial Lunar Eclipse 0145 Mar 26 - 0.97277
Smallest Partial Lunar Eclipse 0776 Apr 08 - 0.02885

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.