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

occurred at the Moon's

descending 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 between Monday, August 31 and Tuesday, September 1, 1970, 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 0.94. 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. An annular solar eclipse occurs when the Moon's

apparent diameter The angular diameter, angular size, apparent diameter, or apparent size is an angular separation (in units of angle) describing how large a sphere or circle appears from a given point of view. In the vision sciences, it is called the '' visual ...

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 20 hours after

apogee An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. The line of apsides (also called apse line, or major axis of the orbit) is the line connecting the two extreme values. Apsides perta ...

(on August 31, 1970, at 2:00 UTC), the Moon's apparent diameter was smaller. Annularity was visible from the

Territory of Papua and New Guinea The Territory of Papua and New Guinea , officially the Administrative Union of the Territory of Papua and the Territory of New Guinea, was established by an administrative union between the Australian-administered territories of Papua and New ...

(today's

Papua New Guinea Papua New Guinea, officially the Independent State of Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean n ...

Gilbert and Ellice Islands The Gilbert and Ellice Islands (GEIC as a colony) in the Pacific Ocean was part of the British Empire from 1892 to 1976. It was a British protectorate, protectorate from 1892 to 12 January 1916, and then a crown colony, colony until 1 January 1 ...

(the part that belongs to

Tuvalu Tuvalu ( ) is an island country in the Polynesian subregion of Oceania in the Pacific Ocean, about midway between Hawaii and Australia. It lies east-northeast of the Santa Cruz Islands (which belong to the Solomon Islands), northeast of Van ...

now) on September 1 (Tuesday),

West Samoa Samoa, officially the Independent State of Samoa and known until 1997 as Western Samoa, is an island country in Polynesia, part of Oceania, in the South Pacific Ocean. It consists of two main islands ( Savai'i and Upolu), two smaller, inhabite ...

(name changed to Samoa later) and the whole

American Samoa American Samoa is an Territories of the United States, unincorporated and unorganized territory of the United States located in the Polynesia region of the Pacific Ocean, South Pacific Ocean. Centered on , it is southeast of the island count ...

except

Swains Island Swain, Swains or Swain's may refer to: Places * Swain Islands, Antarctica * Swain's Island (Newfoundland and Labrador), Canada * Swains Island, an atoll in the Tokelau chain, American Samoa * Swain County, North Carolina, United States * Swa ...

on August 31 (Monday). A partial eclipse was visible for parts of

Eastern Australia The eastern states of Australia are the states adjoining the east continental coastline of Australia. These are the mainland states of Victoria, New South Wales and Queensland, and the island state of Tasmania. The Australian Capital Territor ...

Oceania Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its co ...

, and

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. ...

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 1970

* A partial lunar eclipse on February 21. * A total solar eclipse on March 7. * A partial lunar eclipse on August 17. * An annular solar eclipse on August 31.

Metonic

* Preceded by:

Solar eclipse of November 12, 1966 A total solar eclipse occurred at the Moon's descending node of orbit on Saturday, November 12, 1966, with a magnitude of 1.0234. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image ...

* Followed by: Solar eclipse of June 20, 1974

Tzolkinex

* Preceded by:

Solar eclipse of July 20, 1963 A total solar eclipse occurred at the Moon's Lunar node, ascending node of orbit between Saturday, July 20 and Sunday, July 21, 1963, with a Magnitude of eclipse, magnitude of 1.0224. A solar eclipse occurs when the Moon passes between Earth and ...

* Followed by:

Solar eclipse of October 12, 1977 A total solar eclipse occurred at the Moon's ascending node of orbit on Wednesday, October 12, 1977, with a magnitude of 1.0269. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image o ...

Half-Saros

* Preceded by: Lunar eclipse of August 26, 1961 * Followed by: Lunar eclipse of September 6, 1979

Tritos

* Preceded by:

Solar eclipse of October 2, 1959 A total solar eclipse occurred at the Moon's ascending node of orbit on Friday, October 2, 1959, with a magnitude of 1.0325. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of th ...

* Followed by: Solar eclipse of July 31, 1981

Solar Saros 144

* Preceded by: Solar eclipse of August 20, 1952 * Followed by:

Solar eclipse of September 11, 1988 An annular solar eclipse occurred at the Moon's descending node of orbit on Sunday, September 11, 1988, with a magnitude of 0.9377. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the imag ...

Inex

* Preceded by:

Solar eclipse of September 21, 1941 A total solar eclipse occurred at the Moon's ascending node of orbit on Sunday, September 21, 1941, with a magnitude of 1.0379. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of ...

* Followed by:

Solar eclipse of August 11, 1999 A total solar eclipse occurred at the Moon’s Lunar node, ascending node of orbit on Wednesday, August 11, 1999, with a Magnitude of eclipse, magnitude of 1.0286. A solar eclipse occurs when the Moon passes between the Earth and the Sun, thereby ...

Triad

* Preceded by:

Solar eclipse of October 30, 1883 Solar may refer to: Astronomy * Of or relating to the Sun ** Solar telescope, a special purpose telescope used to observe the Sun ** A device that utilizes solar energy (e.g. "solar panels") ** Solar calendar, a calendar whose dates indicate t ...

* Followed by:

Solar eclipse of July 1, 2057 An annular solar eclipse will occur at the Moon's ascending node of orbit between Sunday, July 1 and Monday, July 2, 2057, with a magnitude of 0.9464. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly ...

Solar eclipses of 1968–1971

Saros 144

Metonic series

Tritos series

Inex series

Notes

References

{{commons category, Solar eclipse of 1970 August 31 1970 8 31 1970 in science 1970 8 31 August 1970