| Annular eclipse | |
 FromL'Étang-Salé, Réunion | |
 Map | |
| Gamma | −0.333 |
|---|---|
| Magnitude | 0.9736 |
| Maximum eclipse | |
| Duration | 186 s (3 min 6 s) |
| Coordinates | 10°42′S37°48′E / 10.7°S 37.8°E /-10.7; 37.8 |
| Max. width of band | 100 km (62 mi) |
| Times (UTC) | |
| Greatest eclipse | 9:08:02 |
| References | |
| Saros | 135 (39 of 71) |
| Catalog # (SE5000) | 9544 |
An annularsolar eclipse occurred at the Moon'sascending node of orbit on Thursday, September 1, 2016,[1][2][3][4] with amagnitude of 0.9736. Asolar eclipse occurs when theMoon passes betweenEarth and theSun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon'sapparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like anannulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 5.4 days beforeapogee (on September 6, 2016, at 19:45 UTC), the Moon's apparent diameter was smaller.[5]
Annularity was visible from parts ofGabon,Congo,Democratic Republic of the Congo,Tanzania,Mozambique,Madagascar, andRéunion. A partial eclipse was visible for most ofAfrica and parts ofAntarctica.
Animated Path
| Country or territory | City or place | Start of partial eclipse | Start of annular eclipse | Maximum eclipse | End of annular eclipse | End of partial eclipse | Duration of annularity (min:s) | Duration of eclipse (hr:min) | Maximum coverage |
|---|---|---|---|---|---|---|---|---|---|
 Gabon | Franceville | 07:22:18 | 08:46:02 | 08:47:18 | 08:48:34 | 10:30:33 | 2:32 | 3:08 | 94.11% |
 Madagascar | Mahajanga | 10:47:34 | 12:39:23 | 12:40:35 | 12:41:46 | 14:24:22 | 2:23 | 3:37 | 94.76% |
| Madagascar | Toamasina | 11:00:56 | 12:50:44 | 12:52:10 | 12:53:37 | 14:31:56 | 2:53 | 3:31 | 94.62% |
 Réunion | Saint-Paul | 12:22:32 | 14:08:10 | 14:09:14 | 14:10:19 | 15:42:15 | 2:09 | 3:20 | 94.34% |
| Réunion | Saint-Pierre | 12:23:36 | 14:08:34 | 14:09:59 | 14:11:24 | 15:42:40 | 2:50 | 3:19 | 94.32% |
| References:[1] | |||||||||
| Country or territory | City or place | Start of partial eclipse | Maximum eclipse | End of partial eclipse | Duration of eclipse (hr:min) | Maximum coverage | |||
|---|---|---|---|---|---|---|---|---|---|
 Ivory Coast | Abidjan | 06:13:11 | 07:20:50 | 08:40:30 | 2:31 | 71.55% | |||
 Ghana | Accra | 06:13:27 | 07:23:38 | 08:46:54 | 2:33 | 71.47% | |||
 Togo | Lomé | 06:13:47 | 07:24:38 | 08:48:52 | 2:35 | 69.50% | |||
 Benin | Porto-Novo | 07:14:09 | 08:25:49 | 09:51:08 | 2:37 | 68.29% | |||
 Nigeria | Lagos | 07:14:20 | 08:26:35 | 09:52:40 | 2:38 | 68.45% | |||
 São Tomé and Príncipe | São Tomé | 06:16:29 | 07:34:21 | 09:08:43 | 2:52 | 90.50% | |||
 Equatorial Guinea | Malabo | 07:16:31 | 08:34:45 | 10:09:11 | 2:53 | 77.96% | |||
| Gabon | Libreville | 07:17:58 | 08:38:18 | 10:15:49 | 2:58 | 89.90% | |||
 Cameroon | Yaoundé | 07:18:14 | 08:38:49 | 10:16:08 | 2:58 | 76.90% | |||
 Central African Republic | Bangui | 07:24:32 | 08:51:16 | 10:34:51 | 3:10 | 71.87% | |||
 Republic of the Congo | Brazzaville | 07:26:14 | 08:53:39 | 10:39:29 | 3:13 | 89.44% | |||
 Democratic Republic of the Congo | Kinshasa | 07:26:19 | 08:53:47 | 10:39:39 | 3:13 | 89.26% | |||
 Angola | Luanda | 07:30:02 | 08:55:08 | 10:37:58 | 3:08 | 73.01% | |||
 Rwanda | Kigali | 08:45:32 | 10:28:03 | 12:22:29 | 3:37 | 82.07% | |||
 Burundi | Gitega | 08:46:43 | 10:30:04 | 12:25:11 | 3:38 | 87.17% | |||
 Uganda | Kampala | 09:49:07 | 11:31:43 | 13:24:10 | 3:35 | 70.81% | |||
 Zambia | Mpulungu | 08:56:19 | 10:42:43 | 12:38:08 | 3:42 | 91.64% | |||
| Zambia | Kasama | 08:58:58 | 10:45:32 | 12:40:28 | 3:42 | 87.23% | |||
 Kenya | Nairobi | 10:00:27 | 11:46:58 | 13:38:41 | 3:38 | 69.11% | |||
 Tanzania | Dodoma | 10:02:54 | 11:52:25 | 13:46:43 | 3:44 | 86.76% | |||
 Malawi | Lilongwe | 09:11:44 | 11:00:14 | 12:52:40 | 3:41 | 79.93% | |||
| Tanzania | Dar es Salaam | 10:12:57 | 12:04:34 | 13:56:37 | 3:44 | 82.28% | |||
 Mozambique | Nampula | 09:27:08 | 11:19:08 | 13:08:35 | 3:41 | 86.39% | |||
| Mozambique | Pemba | 09:26:12 | 11:19:18 | 13:09:11 | 3:43 | 94.82% | |||
 Comoros | Moroni | 10:31:36 | 12:25:20 | 14:13:28 | 3:42 | 89.68% | |||
| Mayotte | Mamoudzou | 10:39:14 | 12:32:55 | 14:18:52 | 3:40 | 89.11% | |||
| Madagascar | Antananarivo | 10:57:00 | 12:48:16 | 14:29:14 | 3:32 | 90.52% | |||
| Réunion | Saint-Denis | 12:22:51 | 14:09:30 | 15:42:25 | 3:20 | 94.27% | |||
 Mauritius | Port Louis | 12:27:46 | 14:13:13 | 15:44:25 | 3:17 | 88.89% | |||
 French Southern and Antarctic Lands | Île Amsterdam | 14:23:24 | 15:43:42 | 16:54:48 | 2:31 | 71.84% | |||
| References:[1] | |||||||||
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Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the Moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.[6]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 2016 September 1 at 06:14:16.4 UTC |
| First Umbral External Contact | 2016 September 1 at 07:18:57.7 UTC |
| First Central Line | 2016 September 1 at 07:20:21.3 UTC |
| First Umbral Internal Contact | 2016 September 1 at 07:21:45.1 UTC |
| First Penumbral Internal Contact | 2016 September 1 at 08:34:59.5 UTC |
| Ecliptic Conjunction | 2016 September 1 at 09:04:14.2 UTC |
| Greatest Duration | 2016 September 1 at 09:06:18.1 UTC |
| Greatest Eclipse | 2016 September 1 at 09:08:02.0 UTC |
| Equatorial Conjunction | 2016 September 1 at 09:19:12.7 UTC |
| Last Penumbral Internal Contact | 2016 September 1 at 09:40:44.7 UTC |
| Last Umbral Internal Contact | 2016 September 1 at 10:54:08.6 UTC |
| Last Central Line | 2016 September 1 at 10:55:35.3 UTC |
| Last Umbral External Contact | 2016 September 1 at 10:57:01.8 UTC |
| Last Penumbral External Contact | 2016 September 1 at 12:01:48.6 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.97362 |
| Eclipse Obscuration | 0.94794 |
| Gamma | −0.33301 |
| Sun Right Ascension | 10h43m43.3s |
| Sun Declination | +08°03'38.0" |
| Sun Semi-Diameter | 15'51.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 10h43m22.2s |
| Moon Declination | +07°45'51.0" |
| Moon Semi-Diameter | 15'12.4" |
| Moon Equatorial Horizontal Parallax | 0°55'48.6" |
| ΔT | 68.3 s |
This eclipse is part of aneclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by afortnight. The first and last eclipse in this sequence is separated by onesynodic month.
| August 18 Descending node (full moon) | September 1 Ascending node (new moon) | September 16 Descending node (full moon) |
|---|---|---|
 | |  |
| Penumbral lunar eclipse Lunar Saros 109 | Annular solar eclipse Solar Saros 135 | Penumbral lunar eclipse Lunar Saros 147 |
This eclipse is a member of asemester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternatingnodes of the Moon's orbit.[7]
The partial solar eclipse onJuly 13, 2018 occurs in the next lunar year eclipse set.
| Solar eclipse series sets from 2015 to 2018 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
120._(32844461616).jpg) Totality inLongyearbyen,Svalbard | March 20, 2015 Total | 0.94536 | 125.jpg) Solar Dynamics Observatory | September 13, 2015  Partial | −1.10039 | |
130 Balikpapan,Indonesia | March 9, 2016 Total | 0.26092 | 135 Annularity inL'Étang-Salé,Réunion | September 1, 2016 Annular | −0.33301 | |
140 Partial fromBuenos Aires,Argentina | February 26, 2017 Annular | −0.45780 | 145_-_square_crop.jpg) Totality inMadras, OR, USA | August 21, 2017 Total | 0.43671 | |
150.jpg) Partial inOlivos, Buenos Aires,Argentina | February 15, 2018 Partial | −1.21163 | 155.jpg) Partial inHuittinen,Finland | August 11, 2018 Partial | 1.14758 | |
This eclipse is a part ofSaros series 135, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on July 5, 1331. It contains annular eclipses from October 21, 1511 through February 24, 2305; hybrid eclipses on March 8, 2323 and March 18, 2341; and total eclipses from March 29, 2359 through May 22, 2449. The series ends at member 71 as a partial eclipse on August 17, 2593. Its eclipses are tabulated in three columns; every third eclipse in the same column is oneexeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
The longest duration of annularity was produced by member 16 at 10 minutes, 41 seconds on December 24, 1601, and the longest duration of totality will be produced by member 62 at 2 minutes, 27 seconds on May 12, 2431. All eclipses in this series occur at the Moon’sascending node of orbit.[8]
| Series members 28–49 occur between 1801 and 2200: | ||
|---|---|---|
| 28 | 29 | 30 |
 May 5, 1818 |  May 15, 1836 |  May 26, 1854 |
| 31 | 32 | 33 |
 June 6, 1872 |  June 17, 1890 |  June 28, 1908 |
| 34 | 35 | 36 |
 July 9, 1926 |  July 20, 1944 |  July 31, 1962 |
| 37 | 38 | 39 |
 August 10, 1980 |  August 22, 1998 | September 1, 2016 |
| 40 | 42 | 42 |
 September 12, 2034 |  September 22, 2052 |  October 4, 2070 |
| 43 | 44 | 45 |
 October 14, 2088 |  October 26, 2106 |  November 6, 2124 |
| 46 | 47 | 48 |
 November 17, 2142 |  November 27, 2160 |  December 9, 2178 |
| 49 | ||
 December 19, 2196 | ||
Themetonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's ascending node.
| 21 eclipse events between June 21, 1982 and June 21, 2058 | ||||
|---|---|---|---|---|
| June 21 | April 8–9 | January 26 | November 13–14 | September 1–2 |
| 117 | 119 | 121 | 123 | 125 |
 June 21, 1982 |  April 9, 1986 |  January 26, 1990 |  November 13, 1993 |  September 2, 1997 |
| 127 | 129 | 131 | 133 | 135 |
 June 21, 2001 |  April 8, 2005 |  January 26, 2009 |  November 13, 2012 | September 1, 2016 |
| 137 | 139 | 141 | 143 | 145 |
 June 21, 2020 |  April 8, 2024 |  January 26, 2028 |  November 14, 2031 |  September 2, 2035 |
| 147 | 149 | 151 | 153 | 155 |
 June 21, 2039 |  April 9, 2043 |  January 26, 2047 |  November 14, 2050 |  September 2, 2054 |
| 157 | ||||
 June 21, 2058 | ||||
This eclipse is a part of atritos cycle, repeating at alternating nodes every 135synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with theanomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
| Series members between 1801 and 2200 | ||||
|---|---|---|---|---|
 April 14, 1809 (Saros 116) |  March 14, 1820 (Saros 117) |  February 12, 1831 (Saros 118) |  January 11, 1842 (Saros 119) |  December 11, 1852 (Saros 120) |
 November 11, 1863 (Saros 121) |  October 10, 1874 (Saros 122) |  September 8, 1885 (Saros 123) |  August 9, 1896 (Saros 124) |  July 10, 1907 (Saros 125) |
 June 8, 1918 (Saros 126) |  May 9, 1929 (Saros 127) |  April 7, 1940 (Saros 128) |  March 7, 1951 (Saros 129) |  February 5, 1962 (Saros 130) |
 January 4, 1973 (Saros 131) |  December 4, 1983 (Saros 132) |  November 3, 1994 (Saros 133) |  October 3, 2005 (Saros 134) | September 1, 2016 (Saros 135) |
 August 2, 2027 (Saros 136) |  July 2, 2038 (Saros 137) |  May 31, 2049 (Saros 138) |  April 30, 2060 (Saros 139) |  March 31, 2071 (Saros 140) |
 February 27, 2082 (Saros 141) |  January 27, 2093 (Saros 142) |  December 29, 2103 (Saros 143) |  November 27, 2114 (Saros 144) |  October 26, 2125 (Saros 145) |
 September 26, 2136 (Saros 146) |  August 26, 2147 (Saros 147) |  July 25, 2158 (Saros 148) |  June 25, 2169 (Saros 149) |  May 24, 2180 (Saros 150) |
 April 23, 2191 (Saros 151) | ||||
This eclipse is a part of the long periodinex cycle, repeating at alternating nodes, every 358synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with theanomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
| Series members between 1801 and 2200 | ||
|---|---|---|
 January 21, 1814 (Saros 128) |  December 31, 1842 (Saros 129) |  December 12, 1871 (Saros 130) |
 November 22, 1900 (Saros 131) |  November 1, 1929 (Saros 132) |  October 12, 1958 (Saros 133) |
 September 23, 1987 (Saros 134) | September 1, 2016 (Saros 135) |  August 12, 2045 (Saros 136) |
 July 24, 2074 (Saros 137) |  July 4, 2103 (Saros 138) |  June 13, 2132 (Saros 139) |
 May 25, 2161 (Saros 140) |  May 4, 2190 (Saros 141) | |
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