A partial

lunar eclipse A lunar eclipse is an astronomical event that occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. Such an alignment occurs during an eclipse season, approximately every six months, during the full moon phase, ...

will occur 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 on Saturday, August 7, 2055, with an umbral

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 0.9606. A lunar eclipse 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 ...

moves into the

Earth's shadow Earth's shadow (or Earth shadow) is the shadow that Earth itself casts through its atmosphere and into outer space, toward the antisolar point. During the twilight period (both early dusk and late dawn), the shadow's visible fringe – someti ...

, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. Unlike a

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 ...

, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the

night Night, or nighttime, is the period of darkness when the Sun is below the horizon. Sunlight illuminates one side of the Earth, leaving the other in darkness. The opposite of nighttime is daytime. Earth's rotation causes the appearance of ...

side of Earth. Occurring about 4.4 days before

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 11, 2055, at 21:00 UTC), the Moon's apparent diameter will be smaller. This lunar eclipse will be the last of an almost tetrad, with the others being on February 22, 2054 (total); August 18, 2054 (total); and February 11, 2055 (total). The eclipse will last 3 hours, 23 minutes, and 23 seconds, and it will also be the last of the first set of partial eclipses in Lunar Saros 139.

Visibility

The eclipse will be completely visible over eastern

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

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. ...

, and the central and eastern

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

, seen rising over

east Asia East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...

and western Australia and setting over

North North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography. Etymology T ...

and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various 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 2055

* A partial solar eclipse on January 27. * A total lunar eclipse on February 11. * A total solar eclipse on July 24. * A partial lunar eclipse on August 7.

Metonic

* Preceded by: Lunar eclipse of October 19, 2051 * Followed by: Lunar eclipse of May 27, 2059

Tzolkinex

* Preceded by: Lunar eclipse of June 26, 2048 * Followed by: Lunar eclipse of September 18, 2062

Half-Saros

* Preceded by:

Solar eclipse of August 2, 2046 A total solar eclipse will occur at the Moon's descending node of orbit on Thursday, August 2, 2046, with a magnitude of 1.0531. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image o ...

* Followed by: Solar eclipse of August 12, 2064

Tritos

* Preceded by: Lunar eclipse of September 7, 2044 * Followed by: Lunar eclipse of July 7, 2066

Lunar Saros 139

* Preceded by: Lunar eclipse of July 27, 2037 * Followed by: Lunar eclipse of August 17, 2073

Inex

* Preceded by: Lunar eclipse of August 28, 2026 * Followed by: Lunar eclipse of July 17, 2084

Triad

* Preceded by: Lunar eclipse of October 6, 1968 * Followed by: Lunar eclipse of June 8, 2142

Lunar eclipses of 2053–2056

Saros 139

Tritos series

Inex series

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, ''The half-saros'' This lunar eclipse is related to two total solar eclipses of

Solar Saros 146 Saros cycle series 146 for solar eclipses occurs at the Moon's descending lunar node, node, repeating every 18 years, 11 days, containing 76 eclipses, 41 of which are umbral (13 annular, 4 hybrid, and 24 total). The first eclipse of the series wa ...

References

2055-08 2055-08 2055 in science {{lunar-eclipse-stub