Saros 99

Catalog of Lunar Eclipses of Saros 99

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 99

The table below lists the concise characteristics of every lunar eclipse belonging to Saros 99 . 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 99
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
1-33 0555-Mar-2403:43:19 5138 128 -17870 Nb t- -1.5488 0.0532-1.0202 71.0 - -
2-32 0573-Apr-0310:40:35 4965 124 -17647 N t- -1.4915 0.1576-0.9143121.3 - -
3-31 0591-Apr-1417:27:17 4793 121 -17424 N t- -1.4260 0.2772-0.7934159.4 - -
4-30 0609-Apr-2500:08:24 4622 117 -17201 N t- -1.3556 0.4057-0.6639190.7 - -
5-29 0627-May-0606:40:04 4453 114 -16978 N t- -1.2777 0.5482-0.5206219.0 - -
6-28 0645-May-1613:09:17 4285 110 -16755 N t- -1.1975 0.6951-0.3731243.3 - -
7-27 0663-May-2719:32:40 4119 107 -16532 N t- -1.1128 0.8506-0.2176265.2 - -
8-26 0681-Jun-0701:55:08 3955 104 -16309 Nx t- -1.0268 1.0085-0.0599284.3 - -
9-25 0699-Jun-1808:15:26 3793 100 -16086 P t- -0.9387 1.1705 0.1014301.2 77.7 -
10-24 0717-Jun-2814:38:27 3633 97 -15863 P t- -0.8525 1.3291 0.2591315.5121.4 -
11-23 0735-Jul-0921:03:23 3475 94 -15640 P t- -0.7676 1.4855 0.4141327.8150.0 -
12-22 0753-Jul-2003:32:29 3320 91 -15417 P t- -0.6859 1.6363 0.5634338.0170.8 -
13-21 0771-Jul-3110:07:19 3168 88 -15194 P t- -0.6086 1.7791 0.7042346.4186.4 -
14-20 0789-Aug-1016:49:29 3019 85 -14971 P t- -0.5371 1.9113 0.8343353.1198.3 -
15-19 0807-Aug-2123:39:38 2873 82 -14748 P t- -0.4716 2.0327 0.9534358.3207.2 -
16-18 0825-Sep-0106:38:08 2731 79 -14525 T t- -0.4127 2.1420 1.0604362.4213.9 39.9
17-17 0843-Sep-1213:47:00 2592 76 -14302 T t- -0.3618 2.2365 1.1525365.3218.8 61.5
18-16 0861-Sep-2221:05:23 2456 73 -14079 T t- -0.3184 2.3172 1.2311367.5222.2 73.5
19-15 0879-Oct-0404:33:28 2325 71 -13856 T p- -0.2824 2.3842 1.2962368.9224.6 81.1
20-14 0897-Oct-1412:11:04 2198 68 -13633 T- p- -0.2537 2.4377 1.3481369.7226.1 86.1
21-13 0915-Oct-2519:58:19 2075 65 -13410 T- p- -0.2320 2.4780 1.3872370.1227.0 89.2
22-12 0933-Nov-0503:53:06 1956 63 -13187 T- p- -0.2163 2.5071 1.4158370.1227.5 91.2
23-11 0951-Nov-1611:53:40 1842 60 -12964 T- p- -0.2046 2.5285 1.4373369.8227.7 92.6
24-10 0969-Nov-2619:59:39 1733 58 -12741 T- p- -0.1968 2.5425 1.4520369.3227.7 93.4
25 -9 0987-Dec-0804:09:17 1627 55 -12518 T- p- -0.1912 2.5521 1.4631368.5227.6 93.9
26 -8 1005-Dec-1812:19:38 1527 53 -12295 T- p- -0.1856 2.5611 1.4744367.7227.4 94.5
27 -7 1023-Dec-2920:29:57 1431 51 -12072 T- p- -0.1794 2.5710 1.4872366.7227.3 95.1
28 -6 1042-Jan-0904:37:56 1340 48 -11849 T- p- -0.1707 2.5852 1.5052365.7227.3 95.9
29 -5 1060-Jan-2012:43:21 1253 46 -11626 T- pp -0.1591 2.6042 1.5286364.6227.4 97.0
30 -4 1078-Jan-3020:42:15 1171 44 -11403 T- pp -0.1415 2.6341 1.5634363.5227.6 98.5
31 -3 1096-Feb-1104:36:44 1093 42 -11180 T- pp -0.1193 2.6719 1.6067362.4227.8100.1
32 -2 1114-Feb-2112:23:18 1020 40 -10957 T- pp -0.0900 2.7227 1.6634361.2228.1101.7
33 -1 1132-Mar-0320:03:44 951 38 -10734 T- pp -0.0548 2.7843 1.7311359.9228.3103.0
34 0 1150-Mar-1503:35:30 886 36 -10511 T- pp -0.0115 2.8604 1.8135358.3228.1103.8
35 1 1168-Mar-2511:01:46 825 34 -10288 T+ pp 0.0372 2.8102 1.7696356.4227.5103.4
36 2 1186-Apr-0518:20:22 768 32 -10065 T+ pp 0.0932 2.7042 1.6700354.1226.1101.6
37 3 1204-Apr-1601:33:03 715 30 -9842 T+ pp 0.1551 2.5876 1.5594351.2223.8 97.6
38 4 1222-Apr-2708:40:28 665 29 -9619 T+ pp 0.2220 2.4618 1.4395347.6220.4 90.8
39 5 1240-May-0715:44:11 619 27 -9396 T -p 0.2929 2.3291 1.3123343.1215.7 80.2
40 6 1258-May-1822:45:13 575 25 -9173 T -p 0.3669 2.1907 1.1789337.9209.4 63.4
Catalog of Lunar Eclipses of Saros 99
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 7 1276-May-2905:44:02 534 24 -8950 T -t 0.4435 2.0478 1.0406331.6201.4 31.5
42 8 1294-Jun-0912:43:28 496 22 -8727 P -t 0.5205 1.9046 0.9015324.5191.7 -
43 9 1312-Jun-1919:43:42 461 21 -8504 P -t 0.5971 1.7621 0.7625316.5180.0 -
44 10 1330-Jul-0102:46:04 427 20 -8281 P -t 0.6729 1.6216 0.6250307.7166.1 -
45 11 1348-Jul-1109:52:28 396 20 -8058 P -h 0.7460 1.4862 0.4920298.2150.0 -
46 12 1366-Jul-2217:03:59 367 20 -7835 P -h 0.8156 1.3575 0.3652288.2131.3 -
47 13 1384-Aug-0200:22:32 339 20 -7612 P -a 0.8800 1.2388 0.2478278.0109.7 -
48 14 1402-Aug-1307:47:01 313 20 -7389 P -a 0.9403 1.1277 0.1377267.6 82.8 -
49 15 1420-Aug-2315:21:03 289 20 -7166 P -a 0.9934 1.0299 0.0405257.6 45.4 -
50 16 1438-Sep-0323:02:38 265 20 -6943 N -a 1.0411 0.9423-0.0469248.0 - -
51 17 1456-Sep-1406:54:30 243 20 -6720 N -a 1.0812 0.8686-0.1206239.2 - -
52 18 1474-Sep-2514:53:58 222 20 -6497 N -a 1.1159 0.8052-0.1842231.2 - -
53 19 1492-Oct-0523:04:17 203 20 -6274 N -a 1.1424 0.7566-0.2331224.6 - -
54 20 1510-Oct-1707:21:58 184 20 -6051 N -a 1.1638 0.7176-0.2723219.0 - -
55 21 1528-Oct-2715:48:34 167 20 -5828 N -a 1.1787 0.6902-0.2997214.9 - -
56 22 1546-Nov-0800:21:31 152 20 -5605 N -a 1.1891 0.6710-0.3188211.8 - -
57 23 1564-Nov-1809:01:31 138 20 -5382 N -a 1.1947 0.6605-0.3288209.9 - -
58 24 1582-Dec-0917:45:07 127 20 -5159 N -a 1.1978 0.6544-0.3340208.5 - -
59 25 1600-Dec-2002:31:53 117 20 -4936 N -a 1.1990 0.6515-0.3355207.7 - -
60 26 1618-Dec-3111:19:57 95 17 -4713 N -a 1.1997 0.6493-0.3360206.9 - -
61 27 1637-Jan-1020:08:48 68 14 -4490 N -a 1.2008 0.6463-0.3368206.0 - -
62 28 1655-Jan-2204:54:44 42 12 -4267 N -a 1.2045 0.6380-0.3424204.4 - -
63 29 1673-Feb-0113:38:12 20 9 -4044 N -a 1.2108 0.6249-0.3524202.1 - -
64 30 1691-Feb-1222:16:34 8 6 -3821 N -a 1.2219 0.6028-0.3711198.5 - -
65 31 1709-Feb-2406:50:39 9 5 -3598 N -a 1.2369 0.5734-0.3968193.8 - -
66 32 1727-Mar-0715:16:36 10 4 -3375 N -a 1.2592 0.5306-0.4358186.8 - -
67 33 1745-Mar-1723:37:14 12 3 -3152 N -a 1.2862 0.4790-0.4835178.0 - -
68 34 1763-Mar-2907:49:15 15 2 -2929 N -a 1.3205 0.4142-0.5445166.3 - -
69 35 1781-Apr-0815:55:08 17 2 -2706 N -a 1.3602 0.3396-0.6154151.4 - -
70 36 1799-Apr-1923:52:15 14 1 -2483 N -a 1.4072 0.2515-0.7001131.2 - -
71 37 1817-May-0107:44:03 12 1 -2260 N -a 1.4587 0.1555-0.7929104.0 - -
72 38 1835-May-1215:28:44 6 1 -2037 Ne -a 1.5160 0.0491-0.8968 58.9 - -

Statistics for Lunar Eclipses of Saros 99

Lunar eclipses of Saros 99 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 0555 Mar 24. The series will end with a penumbral eclipse near the northern edge of the penumbra on 1835 May 12. The total duration of Saros series 99 is 1280.14 years.

Summary of Saros 99
First Eclipse 0555 Mar 24
Last Eclipse 1835 May 12
Series Duration 1280.14 Years
No. of Eclipses 72
Sequence 8N 7P 26T 8P 23N

Saros 99 is composed of 72 lunar eclipses as follows:

Lunar Eclipses of Saros 99
Eclipse Type Symbol Number Percent
All Eclipses - 72100.0%
PenumbralN 31 43.1%
PartialP 15 20.8%
TotalT 26 36.1%

The 72 lunar eclipses of Saros 99 occur in the order of 8N 7P 26T 8P 23N which corresponds to the following.

Sequence Order of Lunar Eclipses in Saros 99
Eclipse Type Symbol Number
Penumbral N 8
Partial P 7
Total T 26
Partial P 8
Penumbral N 23

The longest and shortest eclipses of Saros 99 as well as largest and smallest partial eclipses appear below.

Extreme Durations and Magnitudes of Lunar Eclipses of Saros 99
Extrema Type Date Duration Magnitude
Longest Total Lunar Eclipse 1150 Mar 1501h43m45s -
Shortest Total Lunar Eclipse 1276 May 2900h31m27s -
Longest Partial Lunar Eclipse 0807 Aug 2103h27m14s -
Shortest Partial Lunar Eclipse 1420 Aug 2300h45m22s -
Longest Penumbral Lunar Eclipse 0681 Jun 0704h44m15s -
Shortest Penumbral Lunar Eclipse 1835 May 1200h58m53s -
Largest Partial Lunar Eclipse 0807 Aug 21 - 0.95338
Smallest Partial Lunar Eclipse 1420 Aug 23 - 0.04051

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.