Solar eclipse of February 26, 2017 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | −0.4578 |
Magnitude | 0.9922 |
Maximum eclipse | |
Duration | 44 s (0 min 44 s) |
Coordinates | 34°42′S31°12′W / 34.7°S 31.2°W |
Max. width of band | 31 km (19 mi) |
Times (UTC) | |
Greatest eclipse | 14:54:33 |
References | |
Saros | 140 (29 of 71) |
Catalog # (SE5000) | 9545 |
An annular solar eclipse occurred at the Moon's descending node of orbit on Sunday, February 26, 2017, [1] [2] [3] [4] with a magnitude of 0.9922. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 4.9 days before perigee (on March 3, 2017, at 13:30 UTC), the Moon's apparent diameter was larger. [5]
The eclipse was visible across southern Chile and Argentina in the morning and ended in Angola and southwestern Katanga, Democratic Republic of the Congo at sunset. In Argentina, the best places to see the eclipse were located in the south of the Chubut Province, in the towns of Facundo, Sarmiento and Camarones. A partial eclipse was visible for parts of southern South America, southern and western Africa, and Antarctica.
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 | 2017 February 26 at 12:11:56.1 UTC |
First Umbral External Contact | 2017 February 26 at 13:16:26.6 UTC |
First Central Line | 2017 February 26 at 13:17:14.6 UTC |
Greatest Duration | 2017 February 26 at 13:17:14.6 UTC |
First Umbral Internal Contact | 2017 February 26 at 13:18:02.7 UTC |
Equatorial Conjunction | 2017 February 26 at 14:39:54.4 UTC |
Greatest Eclipse | 2017 February 26 at 14:54:32.8 UTC |
Ecliptic Conjunction | 2017 February 26 at 14:59:31.7 UTC |
Last Umbral Internal Contact | 2017 February 26 at 16:31:16.0 UTC |
Last Central Line | 2017 February 26 at 16:32:01.1 UTC |
Last Umbral External Contact | 2017 February 26 at 16:32:46.1 UTC |
Last Penumbral External Contact | 2017 February 26 at 17:37:10.0 UTC |
Parameter | Value |
---|---|
Eclipse Magnitude | 0.99223 |
Eclipse Obscuration | 0.98451 |
Gamma | −0.45780 |
Sun Right Ascension | 22h39m23.1s |
Sun Declination | -08°29'38.8" |
Sun Semi-Diameter | 16'09.0" |
Sun Equatorial Horizontal Parallax | 08.9" |
Moon Right Ascension | 22h39m53.2s |
Moon Declination | -08°55'03.6" |
Moon Semi-Diameter | 15'47.8" |
Moon Equatorial Horizontal Parallax | 0°57'58.6" |
ΔT | 68.6 s |
This eclipse is part of an eclipse 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 a fortnight.
February 11 Ascending node (full moon) | February 26 Descending node (new moon) |
---|---|
Penumbral lunar eclipse Lunar Saros 114 | Annular solar eclipse Solar Saros 140 |
This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit. [7]
The partial solar eclipse on July 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 Totality in Longyearbyen, Svalbard | March 20, 2015 Total | 0.94536 | 125 Solar Dynamics Observatory | September 13, 2015 Partial | −1.10039 | |
130 Balikpapan, Indonesia | March 9, 2016 Total | 0.26092 | 135 Annularity in L'Étang-Salé, Réunion | September 1, 2016 Annular | −0.33301 | |
140 Partial from Buenos Aires, Argentina | February 26, 2017 Annular | −0.45780 | 145 Totality in Madras, OR, USA | August 21, 2017 Total | 0.43671 | |
150 Partial in Olivos, Buenos Aires, Argentina | February 15, 2018 Partial | −1.21163 | 155 Partial in Huittinen, Finland | August 11, 2018 Partial | 1.14758 |
This eclipse is a part of Saros series 140, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on April 16, 1512. It contains total eclipses from July 21, 1656 through November 9, 1836; hybrid eclipses from November 20, 1854 through December 23, 1908; and annular eclipses from January 3, 1927 through December 7, 2485. The series ends at member 71 as a partial eclipse on June 1, 2774. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
The longest duration of totality was produced by member 11 at 4 minutes, 10 seconds on August 12, 1692, and the longest duration of annularity will be produced by member 53 at 7 minutes, 35 seconds on November 15, 2449. All eclipses in this series occur at the Moon’s descending node of orbit. [8]
Series members 18–39 occur between 1801 and 2200: | ||
---|---|---|
18 | 19 | 20 |
October 29, 1818 | November 9, 1836 | November 20, 1854 |
21 | 22 | 23 |
November 30, 1872 | December 12, 1890 | December 23, 1908 |
24 | 25 | 26 |
January 3, 1927 | January 14, 1945 | January 25, 1963 |
27 | 28 | 29 |
February 4, 1981 | February 16, 1999 | February 26, 2017 |
30 | 31 | 32 |
March 9, 2035 | March 20, 2053 | March 31, 2071 |
33 | 34 | 35 |
April 10, 2089 | April 23, 2107 | May 3, 2125 |
36 | 37 | 38 |
May 14, 2143 | May 25, 2161 | June 5, 2179 |
39 | ||
June 15, 2197 |
The metonic 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 descending node.
21 eclipse events between July 22, 1971 and July 22, 2047 | ||||
---|---|---|---|---|
July 22 | May 9–11 | February 26–27 | December 14–15 | October 2–3 |
116 | 118 | 120 | 122 | 124 |
July 22, 1971 | May 11, 1975 | February 26, 1979 | December 15, 1982 | October 3, 1986 |
126 | 128 | 130 | 132 | 134 |
July 22, 1990 | May 10, 1994 | February 26, 1998 | December 14, 2001 | October 3, 2005 |
136 | 138 | 140 | 142 | 144 |
July 22, 2009 | May 10, 2013 | February 26, 2017 | December 14, 2020 | October 2, 2024 |
146 | 148 | 150 | 152 | 154 |
July 22, 2028 | May 9, 2032 | February 27, 2036 | December 15, 2039 | October 3, 2043 |
156 | ||||
July 22, 2047 |
This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic 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 | ||||
---|---|---|---|---|
October 9, 1809 (Saros 121) | September 7, 1820 (Saros 122) | August 7, 1831 (Saros 123) | July 8, 1842 (Saros 124) | June 6, 1853 (Saros 125) |
May 6, 1864 (Saros 126) | April 6, 1875 (Saros 127) | March 5, 1886 (Saros 128) | February 1, 1897 (Saros 129) | January 3, 1908 (Saros 130) |
December 3, 1918 (Saros 131) | November 1, 1929 (Saros 132) | October 1, 1940 (Saros 133) | September 1, 1951 (Saros 134) | July 31, 1962 (Saros 135) |
June 30, 1973 (Saros 136) | May 30, 1984 (Saros 137) | April 29, 1995 (Saros 138) | March 29, 2006 (Saros 139) | February 26, 2017 (Saros 140) |
January 26, 2028 (Saros 141) | December 26, 2038 (Saros 142) | November 25, 2049 (Saros 143) | October 24, 2060 (Saros 144) | September 23, 2071 (Saros 145) |
August 24, 2082 (Saros 146) | July 23, 2093 (Saros 147) | June 22, 2104 (Saros 148) | May 24, 2115 (Saros 149) | April 22, 2126 (Saros 150) |
March 21, 2137 (Saros 151) | February 19, 2148 (Saros 152) | January 19, 2159 (Saros 153) | December 18, 2169 (Saros 154) | November 17, 2180 (Saros 155) |
October 18, 2191 (Saros 156) |
This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic 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 | ||
---|---|---|
July 17, 1814 (Saros 133) | June 27, 1843 (Saros 134) | June 6, 1872 (Saros 135) |
May 18, 1901 (Saros 136) | April 28, 1930 (Saros 137) | April 8, 1959 (Saros 138) |
March 18, 1988 (Saros 139) | February 26, 2017 (Saros 140) | February 5, 2046 (Saros 141) |
January 16, 2075 (Saros 142) | December 29, 2103 (Saros 143) | December 7, 2132 (Saros 144) |
November 17, 2161 (Saros 145) | October 29, 2190 (Saros 146) |
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