Saros -7

Catalog of Lunar Eclipses of Saros -7

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 -7

The table below lists the concise characteristics of every lunar eclipse belonging to Saros -7 . 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 -7
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 -2946-May-2809:22:33 72274 8639 -61170 Nb t- -1.5740 0.0020-1.0614 13.7 - -
2-35 -2928-Jun-0715:45:21 71728 8528 -60947 N t- -1.4901 0.1558-0.9075120.4 - -
3-34 -2910-Jun-1822:14:25 71184 8418 -60724 N t- -1.4102 0.3025-0.7611165.2 - -
4-33 -2892-Jun-2904:50:12 70642 8308 -60501 N t- -1.3345 0.4416-0.6224196.7 - -
5-32 -2874-Jul-1011:35:53 70102 8199 -60278 N t- -1.2657 0.5684-0.4965220.1 - -
6-31 -2856-Jul-2018:30:42 69565 8091 -60055 N t- -1.2032 0.6835-0.3823238.2 - -
7-30 -2838-Aug-0101:37:11 69029 7983 -59832 N t- -1.1489 0.7837-0.2832252.1 - -
8-29 -2820-Aug-1108:52:46 68495 7876 -59609 N t- -1.1010 0.8720-0.1959263.0 - -
9-28 -2802-Aug-2216:21:21 67964 7770 -59386 N t- -1.0629 0.9424-0.1265270.8 - -
10-27 -2784-Sep-0123:59:15 67434 7664 -59163 Nx t- -1.0317 1.0001-0.0695276.6 - -
11-26 -2766-Sep-1307:48:31 66907 7560 -58940 Nx h- -1.0087 1.0424-0.0276280.5 - -
12-25 -2748-Sep-2315:45:56 66381 7455 -58717 P h- -0.9917 1.0737 0.0037282.9 14.5 -
13-24 -2730-Oct-0423:53:03 65858 7352 -58494 P h- -0.9815 1.0920 0.0226284.0 35.9 -
14-23 -2712-Oct-1508:05:32 65337 7249 -58271 P a- -0.9754 1.1027 0.0346284.2 44.2 -
15-22 -2694-Oct-2616:23:14 64818 7147 -58048 P a- -0.9725 1.1070 0.0407283.7 47.8 -
16-21 -2676-Nov-0600:43:41 64301 7045 -57825 P a- -0.9712 1.1081 0.0444282.8 49.7 -
17-20 -2658-Nov-1709:06:28 63786 6944 -57602 P a- -0.9706 1.1075 0.0471281.7 51.1 -
18-19 -2640-Nov-2717:27:17 63273 6844 -57379 P a- -0.9678 1.1106 0.0543280.9 54.6 -
19-18 -2622-Dec-0901:46:20 62762 6745 -57156 P a- -0.9625 1.1179 0.0664280.4 60.1 -
20-17 -2604-Dec-1910:00:47 62253 6646 -56933 P a- -0.9525 1.1335 0.0874280.7 68.5 -
21-16 -2586-Dec-3018:11:24 61746 6548 -56710 P a- -0.9384 1.1565 0.1163281.5 78.5 -
22-15 -2567-Jan-1002:13:35 61242 6450 -56487 P a- -0.9163 1.1939 0.1600283.5 91.2 -
23-14 -2549-Jan-2110:10:36 60739 6353 -56264 P a- -0.8889 1.2409 0.2135286.2104.3 -
24-13 -2531-Jan-3117:58:20 60239 6257 -56041 P a- -0.8528 1.3036 0.2830289.8118.5 -
25-12 -2513-Feb-1201:40:17 59740 6162 -55818 P a- -0.8111 1.3767 0.3629293.9132.1 -
26-11 -2495-Feb-2209:12:49 59244 6067 -55595 P a- -0.7604 1.4663 0.4592298.7146.0 -
27-10 -2477-Mar-0516:40:34 58749 5973 -55372 P a- -0.7048 1.5651 0.5645303.4158.7 -
28 -9 -2459-Mar-1600:00:45 58257 5880 -55149 P a- -0.6417 1.6777 0.6832308.3170.8 -
29 -8 -2441-Mar-2707:16:25 57767 5787 -54926 P a- -0.5739 1.7992 0.8106312.9181.5 -
30 -7 -2423-Apr-0614:27:28 57279 5695 -54703 P a- -0.5013 1.9298 0.9465317.1190.9 -
31 -6 -2405-Apr-1721:36:38 56793 5604 -54480 T a- -0.4261 2.0653 1.0868320.6198.7 44.3
32 -5 -2387-Apr-2804:44:21 56309 5513 -54257 T a- -0.3484 2.2057 1.2313323.4205.1 68.9
33 -4 -2369-May-0911:51:43 55827 5423 -54034 T- p- -0.2695 2.3487 1.3780325.5209.9 83.5
34 -3 -2351-May-1919:01:01 55347 5333 -53811 T- p- -0.1913 2.4908 1.5228326.7213.2 92.7
35 -2 -2333-May-3102:12:50 54869 5245 -53588 T- pp -0.1144 2.6307 1.6650327.1215.1 98.1
36 -1 -2315-Jun-1009:28:49 54394 5157 -53365 T- pp -0.0402 2.7661 1.8020326.8215.7100.4
37 0 -2297-Jun-2116:49:38 53920 5070 -53142 T+ pp 0.0308 2.7828 1.8197325.9215.2100.4
38 1 -2279-Jul-0200:17:38 53449 4983 -52919 T+ pp 0.0965 2.6621 1.6993324.4213.8 98.3
39 2 -2261-Jul-1307:52:47 52979 4897 -52696 T+ pp 0.1566 2.5518 1.5890322.6211.7 94.5
40 3 -2243-Jul-2315:35:43 52512 4812 -52473 T+ -p 0.2107 2.4529 1.4895320.6209.2 89.6
Catalog of Lunar Eclipses of Saros -7
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 -2225-Aug-0323:27:36 52046 4727 -52250 T+ -p 0.2578 2.3671 1.4027318.5206.4 83.8
42 5 -2207-Aug-1407:28:23 51583 4643 -52027 T -p 0.2977 2.2944 1.3287316.5203.6 77.6
43 6 -2189-Aug-2515:38:27 51122 4560 -51804 T -p 0.3302 2.2354 1.2683314.7201.0 71.4
44 7 -2171-Sep-0423:56:36 50663 4478 -51581 T -p 0.3564 2.1883 1.2197313.1198.7 65.6
45 8 -2153-Sep-1608:23:51 50206 4396 -51358 T -p 0.3751 2.1547 1.1847311.8196.9 60.7
46 9 -2135-Sep-2616:58:44 49751 4315 -51135 T -p 0.3878 2.1320 1.1606310.9195.5 56.9
47 10 -2117-Oct-0801:40:14 49298 4234 -50912 T -p 0.3954 2.1185 1.1462310.2194.6 54.5
48 11 -2099-Oct-1810:27:36 48847 4154 -50689 T -p 0.3985 2.1132 1.1401309.8194.1 53.4
49 12 -2081-Oct-2919:18:40 48398 4075 -50466 T -p 0.3989 2.1125 1.1392309.6193.9 53.2
50 13 -2063-Nov-0904:12:49 47952 3997 -50243 T -p 0.3969 2.1162 1.1430309.5194.0 53.8
51 14 -2045-Nov-2013:06:18 47507 3919 -50020 T -p 0.3958 2.1179 1.1453309.3194.0 54.2
52 15 -2027-Nov-3022:00:20 47064 3842 -49797 T -p 0.3945 2.1199 1.1483309.2194.1 54.7
53 16 -2009-Dec-1206:50:42 46624 3766 -49574 T -p 0.3968 2.1149 1.1448308.9193.9 54.1
54 17 -1991-Dec-2215:37:36 46186 3690 -49351 T -p 0.4019 2.1046 1.1364308.4193.6 52.7
55 18 -1972-Jan-0300:17:16 45749 3615 -49128 T -p 0.4131 2.0828 1.1167307.6192.7 49.1
56 19 -1954-Jan-1308:51:34 45315 3541 -48905 T -a 0.4289 2.0527 1.0890306.6191.3 43.2
57 20 -1936-Jan-2417:17:23 44883 3467 -48682 T -a 0.4519 2.0092 1.0480305.1189.3 32.1
58 21 -1918-Feb-0401:35:03 44452 3394 -48459 P -a 0.4817 1.9533 0.9945303.1186.3 -
59 22 -1900-Feb-1509:43:46 44024 3322 -48236 P -a 0.5190 1.8837 0.9273300.5182.3 -
60 23 -1882-Feb-2517:44:24 43598 3251 -48013 P -a 0.5629 1.8021 0.8478297.2176.9 -
61 24 -1864-Mar-0801:36:27 43174 3180 -47790 P -a 0.6138 1.7078 0.7553293.0169.8 -
62 25 -1846-Mar-1909:20:31 42753 3110 -47567 P -a 0.6714 1.6015 0.6504287.8160.5 -
63 26 -1828-Mar-2916:57:26 42333 3040 -47344 P -a 0.7346 1.4850 0.5348281.4148.5 -
64 27 -1810-Apr-1000:28:46 41915 2971 -47121 P -a 0.8023 1.3606 0.4107273.8132.8 -
65 28 -1792-Apr-2007:53:41 41499 2903 -46898 P -a 0.8749 1.2275 0.2774264.6111.5 -
66 29 -1774-May-0115:15:44 41086 2836 -46675 P -a 0.9495 1.0911 0.1400253.8 80.9 -
67 30 -1756-May-1122:33:59 40674 2769 -46452 N -a 1.0264 0.9508-0.0019241.2 - -
68 31 -1738-May-2305:52:14 40265 2703 -46229 N -a 1.1030 0.8114-0.1436226.7 - -
69 32 -1720-Jun-0213:07:58 39858 2638 -46006 N -a 1.1807 0.6703-0.2876209.7 - -
70 33 -1702-Jun-1320:26:32 39452 2574 -45783 N -a 1.2553 0.5354-0.4262190.5 - -
71 34 -1684-Jun-2403:45:42 39049 2510 -45560 N -a 1.3282 0.4037-0.5622168.2 - -
72 35 -1666-Jul-0511:09:42 38648 2447 -45337 N -a 1.3964 0.2810-0.6896142.4 - -
73 36 -1648-Jul-1518:36:26 38249 2384 -45114 N -a 1.4614 0.1644-0.8116110.6 - -
74 37 -1630-Jul-2702:10:41 37852 2323 -44891 Ne -a 1.5195 0.0607-0.9209 68.1 - -

Statistics for Lunar Eclipses of Saros -7

Lunar eclipses of Saros -7 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 -2946 May 28. The series will end with a penumbral eclipse near the northern edge of the penumbra on -1630 Jul 27. The total duration of Saros series -7 is 1316.20 years.

Summary of Saros -7
First Eclipse -2946 May 28
Last Eclipse -1630 Jul 27
Series Duration 1316.20 Years
No. of Eclipses 74
Sequence 11N 19P 27T 9P 8N

Saros -7 is composed of 74 lunar eclipses as follows:

Lunar Eclipses of Saros -7
Eclipse Type Symbol Number Percent
All Eclipses - 74100.0%
PenumbralN 19 25.7%
PartialP 28 37.8%
TotalT 27 36.5%

The 74 lunar eclipses of Saros -7 occur in the order of 11N 19P 27T 9P 8N which corresponds to the following.

Sequence Order of Lunar Eclipses in Saros -7
Eclipse Type Symbol Number
Penumbral N 11
Partial P 19
Total T 27
Partial P 9
Penumbral N 8

The longest and shortest eclipses of Saros -7 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Lunar Eclipses of Saros -7
Extrema Type Date Duration Magnitude
Longest Total Lunar Eclipse -2315 Jun 1001h40m26s -
Shortest Total Lunar Eclipse -1936 Jan 2400h32m09s -
Longest Partial Lunar Eclipse -2423 Apr 0603h10m54s -
Shortest Partial Lunar Eclipse -2748 Sep 2300h14m31s -
Longest Penumbral Lunar Eclipse -2766 Sep 1304h40m27s -
Shortest Penumbral Lunar Eclipse -2946 May 2800h13m44s -
Largest Partial Lunar Eclipse -1918 Feb 04 - 0.99455
Smallest Partial Lunar Eclipse -2748 Sep 23 - 0.00366

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.