The periodicity and recurrence of solar (and 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[1] with the Moon at nearly the same distance from Earth and at the same time of year. 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 partial eclipses near one of Earth's polar regions. The series will then produce several dozen central[2] eclipses before ending with a group of partial eclipses near the opposite pole.
Solar eclipses of Saros 74 all occur at the Moons descending node and the Moon moves northward with each eclipse. The series began with a partial eclipse in the southern hemisphere on -0615 Aug 08. The series ended with a partial eclipse in the northern hemisphere on 0719 Oct 18. The total duration of Saros series 74 is 1334.23 years. In summary:
First Eclipse = -0615 Aug 08 17:45:17 TD Last Eclipse = 0719 Oct 18 00:50:25 TD Duration of Saros 74 = 1334.23 Years
Saros 74 is composed of 75 solar eclipses as follows:
| Solar Eclipses of Saros 74 | |||
| Eclipse Type | Symbol | Number | Percent |
| All Eclipses | - | 75 | 100.0% |
| Partial | P | 34 | 45.3% |
| Annular | A | 30 | 40.0% |
| Total | T | 8 | 10.7% |
| Hybrid[3] | H | 3 | 4.0% |
Umbral eclipses (annular, total and hybrid) can be further classified as either: 1) Central (two limits), 2) Central (one limit) or 3) Non-Central (one limit). The statistical distribution of these classes in Saros series 74 appears in the following table.
| Umbral Eclipses of Saros 74 | ||
| Classification | Number | Percent |
| All Umbral Eclipses | 41 | 100.0% |
| Central (two limits) | 41 | 100.0% |
| Central (one limit) | 0 | 0.0% |
| Non-Central (one limit) | 0 | 0.0% |
The following string illustrates the sequence of the 75 eclipses in Saros 74: 22P 30A 3H 8T 12P
The longest and shortest eclipses of Saros 74 as well as other eclipse extrema are listed below.
Longest Total Solar Eclipse: 0449 May 08 Duration = 02m35s Shortest Total Solar Eclipse: 0377 Mar 25 Duration = 01m41s Longest Annular Solar Eclipse: -0146 May 16 Duration = 06m22s Shortest Annular Solar Eclipse: 0305 Feb 10 Duration = 00m37s Longest Hybrid Solar Eclipse: 0359 Mar 15 Duration = 01m13s Shortest Hybrid Solar Eclipse: 0323 Feb 22 Duration = 00m03s Largest Partial Solar Eclipse: 0521 Jun 20 Magnitude = 0.9670 Smallest Partial Solar Eclipse: 0719 Oct 18 Magnitude = 0.0071
Local circumstances at greatest eclipse[4] for every eclipse of Saros 74 are presented in the following catalog. The sequence number in the first column links to a global map showing regions of eclipse visibility. A detailed key and additional information about the catalog can be found at: Key to Catalog of Solar Eclipse Saros Series.
For an animation showing how the eclipse path changes with each member of the series, see Saros 074 Animation.
TD of Seq. Rel. Calendar Greatest Luna Ecl. Ecl. Sun Sun Path Central Num. Num. Date Eclipse ΔT Num. Type Gamma Mag. Lat. Long. Alt Azm Width Dur. s ° ° ° ° km 01 -34 -0615 Aug 08 17:45:17 18163 -32336 Pb -1.5409 0.0314 62.5S 59.9W 0 47 02 -33 -0597 Aug 20 00:54:04 17879 -32113 P -1.4909 0.1203 61.9S 177.4W 0 56 03 -32 -0579 Aug 30 08:09:58 17599 -31890 P -1.4471 0.1975 61.4S 63.5E 0 65 04 -31 -0561 Sep 10 15:34:01 17324 -31667 P -1.4101 0.2622 61.0S 57.4W 0 74 05 -30 -0543 Sep 20 23:06:09 17053 -31444 P -1.3799 0.3148 60.7S 179.7E 0 83 06 -29 -0525 Oct 02 06:46:28 16786 -31221 P -1.3564 0.3552 60.7S 54.9E 0 92 07 -28 -0507 Oct 12 14:32:48 16523 -30998 P -1.3381 0.3867 60.8S 71.4W 0 101 08 -27 -0489 Oct 23 22:26:39 16264 -30775 P -1.3260 0.4072 61.1S 160.4E 0 110 09 -26 -0471 Nov 03 06:24:52 16009 -30552 P -1.3180 0.4208 61.5S 31.0E 0 120 10 -25 -0453 Nov 14 14:27:24 15758 -30329 P -1.3134 0.4287 62.1S 99.6W 0 129 11 -24 -0435 Nov 24 22:30:25 15510 -30106 P -1.3093 0.4356 62.9S 129.5E 0 139 12 -23 -0417 Dec 06 06:34:48 15267 -29883 P -1.3066 0.4401 63.8S 2.0W 0 148 13 -22 -0399 Dec 16 14:36:52 15026 -29660 P -1.3022 0.4472 64.7S 133.2W 0 159 14 -21 -0381 Dec 27 22:35:31 14790 -29437 P -1.2954 0.4584 65.8S 96.1E 0 169 15 -20 -0362 Jan 07 06:28:31 14556 -29214 P -1.2844 0.4766 66.9S 33.7W 0 180 16 -19 -0344 Jan 18 14:15:11 14326 -28991 P -1.2682 0.5035 68.0S 162.4W 0 191 17 -18 -0326 Jan 28 21:53:54 14100 -28768 P -1.2458 0.5408 69.0S 70.3E 0 203 18 -17 -0308 Feb 09 05:23:28 13876 -28545 P -1.2161 0.5904 69.9S 55.3W 0 215 19 -16 -0290 Feb 19 12:44:05 13655 -28322 P -1.1792 0.6525 70.8S 179.2W 0 228 20 -15 -0272 Mar 01 19:55:28 13437 -28099 P -1.1349 0.7275 71.4S 58.6E 0 241 21 -14 -0254 Mar 13 02:56:47 13223 -27876 P -1.0821 0.8173 71.8S 61.5W 0 255 22 -13 -0236 Mar 23 09:49:30 13010 -27653 P -1.0219 0.9204 72.0S 179.7W 0 268 23 -12 -0218 Apr 03 16:34:07 12801 -27430 A -0.9546 0.9326 63.1S 25.7E 17 318 858 05m40s 24 -11 -0200 Apr 13 23:12:36 12594 -27207 A -0.8818 0.9382 50.9S 92.0W 28 333 483 06m00s 25 -10 -0182 Apr 25 05:43:43 12390 -26984 A -0.8023 0.9429 39.9S 160.5E 36 341 350 06m13s 26 -09 -0164 May 05 12:12:03 12188 -26761 A -0.7198 0.9469 29.9S 56.7E 44 346 279 06m20s 27 -08 -0146 May 16 18:36:34 11989 -26538 A -0.6331 0.9504 20.6S 44.5W 51 350 234 06m22s 28 -07 -0128 May 27 01:01:11 11791 -26315 A -0.5459 0.9534 12.3S 144.7W 57 354 203 06m16s 29 -06 -0110 Jun 07 07:24:32 11596 -26092 A -0.4568 0.9557 4.7S 116.5E 63 358 181 06m05s 30 -05 -0092 Jun 17 13:51:37 11403 -25869 A -0.3699 0.9576 1.8N 17.6E 68 2 166 05m48s 31 -04 -0074 Jun 28 20:21:24 11212 -25646 A -0.2842 0.9589 7.3N 81.1W 74 6 156 05m29s 32 -03 -0056 Jul 09 02:56:21 11023 -25423 A -0.2021 0.9599 11.7N 179.6E 78 11 149 05m09s 33 -02 -0038 Jul 20 09:37:47 10836 -25200 A -0.1246 0.9603 14.8N 79.3E 83 15 145 04m52s 34 -01 -0020 Jul 30 16:27:14 10650 -24977 A -0.0529 0.9604 16.6N 22.7W 87 20 144 04m38s 35 00 -0002 Aug 10 23:26:07 10466 -24754 A 0.0118 0.9602 17.3N 126.9W 89 200 144 04m28s 36 01 0016 Aug 21 06:33:33 10284 -24531 A 0.0703 0.9598 16.9N 126.7E 86 205 146 04m22s 37 02 0034 Sep 01 13:52:18 10103 -24308 A 0.1203 0.9593 15.5N 17.2E 83 208 149 04m20s 38 03 0052 Sep 11 21:20:36 9923 -24085 Am 0.1634 0.9588 13.4N 95.0W 81 209 151 04m20s 39 04 0070 Sep 23 05:00:07 9745 -23862 A 0.1978 0.9584 10.8N 149.6E 79 210 154 04m22s 40 05 0088 Oct 03 12:48:46 9568 -23639 A 0.2256 0.9582 7.8N 31.6E 77 209 155 04m25s
TD of Seq. Rel. Calendar Greatest Luna Ecl. Ecl. Sun Sun Path Central Num. Num. Date Eclipse ΔT Num. Type Gamma Mag. Lat. Long. Alt Azm Width Dur. s ° ° ° ° km 41 06 0106 Oct 14 20:48:09 9392 -23416 A 0.2454 0.9583 4.7N 89.3W 76 208 156 04m29s 42 07 0124 Oct 25 04:55:04 9217 -23193 A 0.2599 0.9588 1.6N 147.9E 75 206 154 04m31s 43 08 0142 Nov 05 13:09:35 9043 -22970 A 0.2688 0.9598 1.3S 23.1E 74 203 151 04m31s 44 09 0160 Nov 15 21:29:22 8870 -22747 A 0.2741 0.9614 3.9S 102.9W 74 199 145 04m27s 45 10 0178 Nov 27 05:53:56 8697 -22524 A 0.2758 0.9635 5.9S 130.1E 74 195 137 04m18s 46 11 0196 Dec 07 14:19:38 8526 -22301 A 0.2776 0.9662 7.2S 2.9E 74 191 127 04m02s 47 12 0214 Dec 18 22:46:04 8355 -22078 A 0.2794 0.9696 7.6S 124.4W 74 186 114 03m41s 48 13 0232 Dec 29 07:10:36 8184 -21855 A 0.2833 0.9736 7.0S 108.7E 74 182 99 03m12s 49 14 0251 Jan 09 15:33:30 8014 -21632 A 0.2892 0.9781 5.5S 17.9W 73 178 82 02m38s 50 15 0269 Jan 19 23:50:15 7844 -21409 A 0.3008 0.9831 2.9S 143.2W 73 174 63 01m59s 51 16 0287 Jan 31 08:03:05 7674 -21186 A 0.3163 0.9886 0.7N 92.2E 72 170 42 01m18s 52 17 0305 Feb 10 16:07:59 7505 -20963 A 0.3393 0.9944 5.2N 31.0W 70 167 21 00m37s 53 18 0323 Feb 22 00:07:59 7336 -20740 H 0.3671 1.0004 10.5N 153.3W 68 164 2 00m03s 54 19 0341 Mar 04 07:58:43 7166 -20517 H 0.4033 1.0065 16.6N 86.3E 66 162 25 00m40s 55 20 0359 Mar 15 15:44:41 6997 -20294 H 0.4444 1.0126 23.2N 33.1W 63 161 48 01m13s 56 21 0377 Mar 25 23:22:23 6827 -20071 T 0.4932 1.0184 30.4N 150.8W 60 159 72 01m41s 57 22 0395 Apr 06 06:55:08 6657 -19848 T 0.5470 1.0240 38.1N 92.6E 57 158 97 02m04s 58 23 0413 Apr 16 14:20:56 6487 -19625 T 0.6075 1.0291 46.3N 22.4W 52 158 124 02m20s 59 24 0431 Apr 27 21:43:54 6316 -19402 T 0.6712 1.0337 54.7N 136.5W 48 157 153 02m31s 60 25 0449 May 08 05:02:39 6145 -19179 T 0.7391 1.0374 63.7N 110.4E 42 157 187 02m35s 61 26 0467 May 19 12:19:15 5973 -18956 T 0.8094 1.0403 73.1N 2.3W 36 156 231 02m33s 62 27 0485 May 29 19:34:46 5800 -18733 T 0.8814 1.0420 83.4N 118.1W 28 151 301 02m26s 63 28 0503 Jun 10 02:51:04 5627 -18510 T 0.9535 1.0420 83.7N 28.0W 17 353 483 02m12s 64 29 0521 Jun 20 10:08:44 5452 -18287 P 1.0248 0.9670 65.8N 143.1W 0 348 65 30 0539 Jul 01 17:28:39 5277 -18064 P 1.0948 0.8345 64.9N 96.1E 0 338 66 31 0557 Jul 12 00:53:11 5099 -17841 P 1.1616 0.7075 64.0N 25.5W 0 329 67 32 0575 Jul 23 08:23:00 4920 -17618 P 1.2247 0.5871 63.2N 148.2W 0 319 68 33 0593 Aug 02 15:58:20 4740 -17395 P 1.2839 0.4743 62.5N 88.0E 0 310 69 34 0611 Aug 13 23:41:16 4584 -17172 P 1.3374 0.3723 61.9N 37.4W 0 301 70 35 0629 Aug 24 07:31:59 4440 -16949 P 1.3849 0.2818 61.5N 164.6W 0 292 71 36 0647 Sep 04 15:31:41 4296 -16726 P 1.4260 0.2039 61.2N 66.1E 0 283 72 37 0665 Sep 14 23:38:28 4121 -16503 P 1.4618 0.1363 61.0N 65.1W 0 274 73 38 0683 Sep 26 07:54:43 3942 -16280 P 1.4907 0.0822 61.0N 161.3E 0 265 74 39 0701 Oct 06 16:18:38 3766 -16057 P 1.5138 0.0391 61.2N 25.9E 0 256 75 40 0719 Oct 18 00:50:25 3622 -15834 Pe 1.5311 0.0071 61.5N 111.4W 0 247
[1] The Moon's orbit is inclined about 5 degrees to Earth's orbit around the Sun. The points where the lunar orbit intersects the plane of Earth's orbit are known as the nodes. The Moon moves from south to north of Earth's orbit at the ascending node, and from north to south at the descending node.
[2]Central solar eclipses are eclipses in which the central axis of the Moon's shadow strikes the Earth's surface. All partial (penumbral) eclipses are non-central eclipses since the shadow axis misses Earth. However, umbral eclipses (total, annular and hybrid) may be either central (usually) or non-central (rarely).
[3]Hybrid eclipses are also known as annular/total eclipses. Such an eclipse is both total and annular along different sections of its umbral path. For more information, see Five Millennium Catalog of Hybrid Solar Eclipses .
[4]Greatest eclipse is defined as the instant when the axis of the Moon's shadow passes closest to the Earth's center. For total eclipses, the instant of greatest eclipse is virtually identical to the instants of greatest magnitude and greatest duration. However, for annular eclipses, the instant of greatest duration may occur at either the time of greatest eclipse or near the sunrise and sunset points of the eclipse path.
The Gregorian calendar is used for all 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..
The coordinates of the Sun used in these predictions are based on the VSOP87 theory [Bretagnon and Francou, 1988]. The Moon's coordinates are based on the ELP-2000/82 theory [Chapront-Touze and Chapront, 1983]. For more information, see: Solar and Lunar Ephemerides. The revised value used for the Moon's secular acceleration is n-dot = -25.858 arc-sec/cy*cy, as deduced from the Apollo lunar laser ranging experiment (Chapront, Chapront-Touze, and Francou, 2002).
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:
A series of polynomial expressions have been derived to simplify the evaluation of ΔT for any time from -1999 to +3000. The uncertainty in ΔT over this period can be estimated from scatter in the measurements.
Special thanks to Dan McGlaun for extracting the individual eclipse maps from the Five Millennium Canon of Solar Eclipses: -1999 to +3000 for use in this catalog and for preparing the Saros series animations from these maps.
The Besselian elements used in the predictions were kindly provided by Jean Meeus. All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy. Some of the information presented on this web site is based on data originally published in Five Millennium Canon of Solar Eclipses: -1999 to +3000
Permission is freely granted to reproduce this data when accompanied by an acknowledgment:
"Eclipse Predictions by Fred Espenak and Jean Meeus (NASA's GSFC)"