A partial

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 Earth, totally or partially. Such an alignment occurs approximately every six months, during the eclipse season i ...

occurred at the Moon’s

ascending node An orbital node is either of the two points where an orbit intersects a plane of reference to which it is inclined. A non-inclined orbit, which is contained in the reference plane, has no nodes. Planes of reference Common planes of referenc ...

of orbit on Friday, November 25, 2011, with a

magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...

of 0.9047. A

occurs when the

Moon The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...

passes between

Earth Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...

and the

Sun The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light a ...

, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth. This was the last of four partial solar eclipses in 2011, with the others occurring on

January 4 Events Pre-1600 *46 BC – Julius Caesar fights Titus Labienus in the Battle of Ruspina. * 871 – Battle of Reading (871), Battle of Reading: Æthelred of Wessex and his brother Alfred the Great, Alfred are defeated by a Danish invasi ...

June 1 Events Pre-1600 * 1252 – Alfonso X is proclaimed king of Castile and León. * 1298 – Residents of Riga and the Grand Duchy of Lithuania defeat the Livonian Order in the Battle of Turaida. * 1495 – A monk, John Cor, rec ...

, and

July 1 Events Pre-1600 * 69 – Tiberius Julius Alexander orders his Roman legions in Alexandria to swear allegiance to Vespasian as Emperor. * 552 – Battle of Taginae: Byzantine forces under Narses defeat the Ostrogoths in Italy, and ...

. This eclipse was visible across

Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean (also known as the Antarctic Ocean), it contains the geographic South Pole. ...

in its

summer Summer or summertime is the hottest and brightest of the four temperate seasons, occurring after spring and before autumn. At or centred on the summer solstice, daylight hours are the longest and darkness hours are the shortest, with day ...

24-hour day sunlight, and

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

at sunset with less than 20% of the Sun obscured. Parts of the western

Antarctic Peninsula The Antarctic Peninsula, known as O'Higgins Land in Chile and Tierra de San Martin in Argentina, and originally as Graham Land in the United Kingdom and the Palmer Peninsula in the United States, is the northernmost part of mainland Antarctica. ...

experienced nearly 90% obscuration of the Sun, while

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

and

Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...

experienced a very small partial eclipse.

Images

Animated path

Eclipse details

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.

Eclipse season

This eclipse is part of an

eclipse season An eclipse season is a period, roughly every six months, when eclipses occur. Eclipse seasons are the result of the axial parallelism of the Orbit of the Moon, Moon's orbital plane (orbital inclination, tilted five degrees to the ecliptic, Earth ...

, 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 A fortnight is a unit of time equal to 14 days (two weeks). The word derives from the Old English term , meaning "" (or "fourteen days", since the Anglo-Saxons counted by nights). Astronomy and tides In astronomy, a ''lunar fortnight'' is hal ...

Related eclipses

Eclipses in 2011

* A partial solar eclipse on January 4. * A partial solar eclipse on June 1. * A total lunar eclipse on June 15. * A partial solar eclipse on July 1. * A partial solar eclipse on November 25. * A total lunar eclipse on December 10.

Metonic

* Preceded by: Solar eclipse of February 7, 2008 * Followed by:

Solar eclipse of September 13, 2015 A partial solar eclipse occurred at the Moon's Lunar node, ascending node of orbit on Sunday, September 13, 2015, with a Magnitude of eclipse, magnitude of 0.7875. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby tota ...

Tzolkinex

* Preceded by:

Solar eclipse of October 14, 2004 A partial solar eclipse occurred at the Moon's descending node of orbit between Wednesday, October 13 and Thursday, October 14, 2004, with a magnitude of 0.9282. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby tot ...

* Followed by: Solar eclipse of January 6, 2019

Half-Saros

* Preceded by: Lunar eclipse of November 20, 2002 * Followed by: Lunar eclipse of November 30, 2020

Tritos

* Preceded by: Solar eclipse of December 25, 2000 * Followed by: Solar eclipse of October 25, 2022

Solar Saros 123

* Preceded by: Solar eclipse of November 13, 1993 * Followed by: Solar eclipse of December 5, 2029

Inex

* Preceded by: Solar eclipse of December 15, 1982 * Followed by: Solar eclipse of November 4, 2040

Triad

* Preceded by: Solar eclipse of January 24, 1925 * Followed by: Solar eclipse of September 25, 2098

Solar eclipses of 2011–2014

Saros 123

Metonic series

Tritos series

Inex series

Notes

References

* APOD December 2, 201
APOD: 2011 December 2 - Solar Eclipse over Antarctica

{{Solar eclipses 2011 11 25 2011 in science 2011 11 25 November 2011