An annular

solar eclipse A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of the Earth, totally or partially. Such an alignment occurs during an eclipse season, approximately every six mo ...

took place on February 26, 2017. A

occurs when the

Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width ...

passes between

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surf ...

and the

Sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared rad ...

, 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 The angular diameter, angular size, apparent diameter, or apparent size is an angular distance describing how large a sphere or circle appears from a given point of view. In the vision sciences, it is called the visual angle, and in optics, it is ...

is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an

annulus Annulus (or anulus) or annular indicates a ring- or donut-shaped area or structure. It may refer to: Human anatomy * ''Anulus fibrosus disci intervertebralis'', spinal structure * Annulus of Zinn, a.k.a. annular tendon or ''anulus tendineus co ...

(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 South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the souther ...

in the morning and ended in south-western

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

at sunset. In

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, t ...

, the best places to see the eclipse were located in the south of the

Chubut Province Chubut ( es, Provincia del Chubut, ; cy, Talaith Chubut) is a province in southern Argentina, situated between the 42nd parallel south (the border with Río Negro Province), the 46th parallel south (bordering Santa Cruz Province), the Andes ran ...

, in the towns of

Facundo ''Facundo: Civilization and Barbarism'' (original Spanish title: ''Facundo: Civilización y Barbarie'') is a book written in 1845 by Domingo Faustino Sarmiento, a writer and journalist who became the second president of Argentina. It is a corner ...

, 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 Conjunction: 26 Feb 2017 14:38:46.0 UTC (14:39:54.4 TD)

Geocentric coordinates of sun and moon

Sun right ascension: 22.66 Sun declination: -8.5 Sun diameter: 1938.0 arcseconds Moon right ascension: 22.66 Moon declination: -8.9 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

File:Eclipse Solar Anular - 26.02.2017 - Villa Gesell (Argentina).jpg, Partial from

Villa Gesell Villa Gesell is a seaside resort city in Villa Gesell Partido, Buenos Aires Province, Argentina. It was founded in 1931, with the intention of turning a dune field into a timber plantation.

, Argentina, 13:18 GMT File:Eclipse Coyhaique.jpg,

Coyhaique, Chile Coyhaique (), also spelled Coihaique in Patagonia, is the capital city of both the Coyhaique Province and the Aysén Region of Chile. Founded by settlers in 1929, it is a young city. Until the twentieth century, Chile showed little interest in exp ...

, 13:35 GMT, 1 minute before annularity File:Observatorio Chakana 06.jpg, Partial from Pisco Elqui, Chile, 13:48 GMT File:Annular Solar Eclipse - Eclipse Solar desde Punta del Este, Uruguay 170226-2133-jikatu (32974782742).jpg, Partial from

Punta del Este, Uruguay Punta del Este () is a seaside city and peninsula on the Atlantic Coast in the Maldonado Department of southeastern Uruguay. Starting as a small town, Punta del Este later became internationally known as a resort for the Latin and North American ...

, 13:56 GMT File:Eclipse solar en la Patagonia 02.jpg, Partial from

Puerto Cisnes, Chile Puerto Cisnes (Spanish for: "port swans") is a town and seaport in Cisnes commune, Aysén Province, Aysén del General Carlos Ibáñez del Campo Region in the Chilean Patagonia. The town is on the Puyuhuapi Channel at the outflow of Cisnes River. ...

, 14:17 GMT File:Eclipse del 26 02 2017 (33008907251).jpg, Composed image as seen from Paraná, Argentina File:Eclipse Solar Anular - Fases - 26.02.2017 - Villa Gesell (Argentina).png, Time lapse images as seen from Villa Gesell, Argentina File:Animacion Eclipse 26-2-2017 Montevideo - 146 cuadros - 600px.gif, Animation of the eclipse as seen from

Montevideo, Uruguay Montevideo () is the capital and largest city of Uruguay. According to the 2011 census, the city proper has a population of 1,319,108 (about one-third of the country's total population) in an area of . Montevideo is situated on the southern ...

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.

Solar eclipses descending node 2015-2018

* Saros 120: Total Solar Eclipse March 20, 2015 * Saros 130: Total Solar Eclipse March 8–9, 2016 * Saros 140: Annular Solar Eclipse February 26, 2017 * Saros 150: Partial Solar Eclipse February 15, 2018

Tzolkinex

Preceded: Solar eclipse of January 15, 2010 Followed:

Solar eclipse of April 8, 2024 A total solar eclipse will take place at the Moon's ascending node on Monday, April 8, 2024, visible across North America and dubbed the Great North American Eclipse (also Great American Total Solar Eclipse and Great American Eclipse) by some of ...

Half-Saros cycle

Preceded: Lunar eclipse of February 21, 2008 Followed: Lunar eclipse of March 3, 2026

Tritos

Preceded:

Solar eclipse of March 29, 2006 A total solar eclipse occurred on March 29, 2006. 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. A total solar eclipse occurs when the Moon's ...

Followed:

Solar eclipse of January 26, 2028 An annular solar eclipse will occur on Wednesday, January 26, 2028. 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 oc ...

Solar Saros 140

Preceded:

Solar eclipse of February 16, 1999 An annular solar eclipse occurred on February 16, 1999. 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 ...

Followed:

Solar eclipse of March 9, 2035 An annular solar eclipse will occur on March 9, 2035. 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 M ...

Inex

Preceded:

Solar eclipse of March 18, 1988 A total solar eclipse occurred on March 18, 1988. 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. A total solar eclipse occurs when the Moon's a ...

Followed:

Solar eclipse of February 5, 2046 An annular solar eclipse will occur on Monday, February 5, 2046. 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 occ ...

Triad

Preceded: Solar eclipse of April 28, 1930 Followed: Solar eclipse of December 29, 2103

Solar eclipses 2015–2018

Saros 140

It is a part of Saros cycle 140, repeating every 18 years, 11 days, containing 71 events. The series started with 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. The longest duration of totality was 4 minutes, 10 seconds on August 12, 1692.

Inex series

Metonic cycle

Notes and references

References

www.solar-eclipse.de
- The annular solar eclipse of 02/26/2017
NASA graphics
*

*
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 2017 2 26 2017 in science 2017 02 26 February 2017 events 2017 in South America 2017 in Africa {{Solar-eclipse-stub