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A penumbral
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, ...
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 on Saturday, August 8, 1998, 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 −0.8637. 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 penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 3.4 days before
perigee 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, 1998, at 12:45 UTC), the Moon's apparent diameter was larger.


Visibility

The eclipse was completely visible over eastern and central
North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...
,
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 ...
,
Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...
, much of
Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...
, 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. ...
, seen rising over western North America and setting over
eastern Europe Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural and socio-economic connotations. Its eastern boundary is marked by the Ural Mountain ...
and the
Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...
.


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 ...
. The first and last eclipse in this sequence is separated by one
synodic month In lunar calendars, a lunar month is the time between two successive Syzygy (astronomy), syzygies of the same type: new moons or full moons. The precise definition varies, especially for the beginning of the month. Variations In Shona people, S ...
.


Related eclipses


Eclipses in 1998

* A total solar eclipse on February 26. * A penumbral lunar eclipse on March 13. * A penumbral lunar eclipse on August 8. * An annular solar eclipse on August 22. * A penumbral lunar eclipse on September 6.


Metonic

* Followed by: Lunar eclipse of May 26, 2002


Tzolkinex

* Preceded by: Lunar eclipse of June 27, 1991


Tritos

* Followed by: Lunar eclipse of July 7, 2009


Lunar Saros 109

* Preceded by: Lunar eclipse of July 27, 1980 * Followed by: Lunar eclipse of August 18, 2016


Inex

* Preceded by: Lunar eclipse of August 27, 1969 * Followed by: Lunar eclipse of July 18, 2027


Triad

* Followed by: Lunar eclipse of June 8, 2085


Lunar eclipses of 1998–2002


Saros 109


Tritos series


Inex series


See also

*
List of lunar eclipses __NOTOC__ A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. By type * List of central lunar eclipses * Total penumbral lunar eclipse By classification * List of saros series for lunar eclipse ...
*
List of 20th-century lunar eclipses During the 20th century, there were 229 lunar eclipses of which 83 were Lunar eclipse#Types of lunar eclipse, penumbral, 65 were partial and 81 were total. Of the total eclipses, 33 were central, in the sense that the Moon passed through the ver ...


References


External links


Saros cycle 109
* 1998-08 1998 in science August 1998 {{lunar-eclipse-stub