Solar eclipse of February 26, 2017
An annular solar eclipse occurred at the Moon's descending node of orbit on Sunday, February 26, 2017,[1][2][3] 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 only 4.7 days before perigee (Perigee on March 3, 2017), the Moon's apparent diameter was larger. The moon's apparent diameter was just over 0.7% smaller than the Sun's.
It was visible across southern South America in the morning and ended in south-western Africa 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. Lunar perigee occurred at about 2017 Mar 03 at 07:41:24.5 UTC, 4.7 days later.
Predictions and additional information
Eclipse characteristics
Eclipse magnitude: 0.99223
Eclipse obscuration: 0.98451
Gamma: -0.45780
Saros Series: 140th (29 of 71)
Conjunction times
Greatest eclipse: 26 Feb 2017 14:53:24.5 UTC (14:54:32.8 TD)
Ecliptic conjunction: 26 Feb 2017 14:58:23.4 UTC (14:59:31.7 TD)
Equatorial Ccnjunction: 26 Feb 2017 14:38:46.0 UTC (14:39:54.4 TD)
Geocentric coordinates of sun and moon
Sun right ascension: 22.656
Sun declination: -8.49°
Sun diameter: 1938.0 arcseconds
Moon right ascension: 22.665
Moon declination: -8.92°
Moon diameter: 1895.6 arcseconds
Geocentric libration of moon
Latitude: 5.1 degrees south
Longitude: 0.6 degrees east
Direction: 336.5 (NNW)
Images
Gallery
- Partial from Villa Gesell, Argentina, 13:18 GMT
- Coyhaique, Chile, 13:35 GMT, 1 minute before annularity
- Partial from Pisco Elqui, Chile, 13:48 GMT
- Partial from Punta del Este, Uruguay, 13:56 GMT
- Partial from Puerto Cisnes, Chile, 14:17 GMT
- Composed image as seen from Paraná, Argentina
- Time lapse images as seen from Villa Gesell, Argentina
- Animation of the eclipse as seen from Montevideo, Uruguay
Related eclipses
Eclipses of 2017
- A penumbral lunar eclipse on February 11.
- An annular solar eclipse on February 26.
- A partial lunar eclipse on August 7.
- A total solar eclipse on August 21.
Metonic
- Preceded by: Solar eclipse of May 10, 2013
- Followed by: Solar eclipse of December 14, 2020
Tzolkinex
- Preceded by: Solar eclipse of January 15, 2010
- Followed by: Solar eclipse of April 8, 2024
Half-Saros
- Preceded by: Lunar eclipse of February 21, 2008
- Followed by: Lunar eclipse of March 3, 2026
Tritos
- Preceded by: Solar eclipse of March 29, 2006
- Followed by: Solar eclipse of January 26, 2028
Solar Saros 140
- Preceded by: Solar eclipse of February 16, 1999
- Followed by: Solar eclipse of March 9, 2035
Inex
- Preceded by: Solar eclipse of March 18, 1988
- Followed by: Solar eclipse of February 5, 2046
Triad
- Preceded by: Solar eclipse of April 28, 1930
- Followed by: Solar eclipse of December 29, 2103
Solar eclipses of 2015–2018
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.[4]
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 |
Saros 140
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.[5]
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 |
Inex series
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.
Inex series members between 1901 and 2100: | ||
---|---|---|
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) |
Metonic series
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 events between July 22, 1971 and July 22, 2047 | ||||
---|---|---|---|---|
July 21–22 | 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 |
Notes and references
- ^ Cofield, Calla (February 26, 2017). "Moon Blocks (Most of) the Sun in 'Ring of Fire' Solar Eclipse". Space.com.
- ^ Dwyer, Colin (February 25, 2017). "'Ring Of Fire' Eclipse Set To Blaze In Southern Skies". NPR.
- ^ ""Ring of fire" annular eclipse: Stunning views of first solar eclipse of 2017". www.cbsnews.com. February 27, 2017.
- ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
- ^ "NASA - Catalog of Solar Eclipses of Saros 140". eclipse.gsfc.nasa.gov.
References
- www.solar-eclipse.de - The annular solar eclipse of 02/26/2017
- NASA graphics
- Interactive map of the eclipse from NASA
- NASA Besselian Elements - Annular Solar Eclipse of 2017 February 26
- hermet.org: Annular Solar Eclipse: February 26 2017
External links
- www.solar-eclipse.de - Average cloud coverage and cities along the eclipse path
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