- Source: September 2015 lunar eclipse
A total lunar eclipse occurred at the Moon’s descending node of orbit on Monday, September 28, 2015, with an umbral magnitude of 1.2774. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring only about 5 hours after perigee (on September 27, 2015, at 21:45 UTC), the Moon's apparent diameter was larger.
This lunar eclipse is the last of a tetrad, with four total lunar eclipses in series, the others being on April 15, 2014; October 8, 2014; and April 4, 2015.
The Moon appeared larger than normal, because the Moon was just 1 hour past its closest approach to Earth in 2015 at mid-eclipse, sometimes called a supermoon. The Moon's apparent diameter was larger than 34' viewed straight overhead, just off the coast of northeast Brazil.
The total lunar eclipse was darker than expected, possibly due to ash left behind from eruptions of the Calbuco volcano in April 2015.
Background
A lunar eclipse occurs when the Moon passes within Earth's umbra (shadow). As the eclipse begins, Earth's shadow first darkens the Moon slightly. Then, the shadow begins to "cover" part of the Moon, turning it a dark red-brown color (typically – the color can vary based on atmospheric conditions). The Moon appears to be reddish because of Rayleigh scattering (the same effect that causes sunsets to appear reddish) and the refraction of that light by Earth's atmosphere into its umbra.
The following simulation shows the approximate appearance of the Moon passing through Earth's shadow. The Moon's brightness is exaggerated within the umbral shadow. The northern portion of the Moon was closest to the center of the shadow, making it darkest, and most red in appearance.
Supermoon
This eclipsed Moon appeared 12.9% larger in diameter than the April 2015 lunar eclipse, measured as 29.66' and 33.47' in diameter from Earth's center, as compared in these simulated images.
A supermoon is the coincidence of a full moon or a new moon with the closest approach the Moon makes to the Earth on its elliptical orbit, resulting in the largest apparent size of the lunar disk as seen from Earth. This was the last supermoon lunar eclipse until January 31, 2018.
Visibility
The eclipse was completely visible over eastern North America, South America, west Africa, and western Europe, seen rising over western North America and the eastern Pacific Ocean and setting over east Africa, eastern Europe, and west and central Asia.
Timing
† The Moon was not visible during this part of the eclipse in this time zone.
* The penumbral phase of the eclipse changes the appearance of the Moon only slightly and is generally not noticeable.
Gallery
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, 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.
Related eclipses
= Eclipses in 2015
=A total solar eclipse on March 20.
A total lunar eclipse on April 4.
A partial solar eclipse on September 13.
A total lunar eclipse on September 28.
= Metonic
=Preceded by: Lunar eclipse of December 10, 2011
Followed by: Lunar eclipse of July 16, 2019
= Tzolkinex
=Preceded by: Lunar eclipse of August 16, 2008
Followed by: Lunar eclipse of November 8, 2022
= Half-Saros
=Preceded by: Solar eclipse of September 22, 2006
Followed by: Solar eclipse of October 2, 2024
= Tritos
=Preceded by: Lunar eclipse of October 28, 2004
Followed by: Lunar eclipse of August 28, 2026
= Lunar Saros 137
=Preceded by: Lunar eclipse of September 16, 1997
Followed by: Lunar eclipse of October 8, 2033
= Inex
=Preceded by: Lunar eclipse of October 17, 1986
Followed by: Lunar eclipse of September 7, 2044
= Triad
=Preceded by: Lunar eclipse of November 27, 1928
Followed by: Lunar eclipse of July 30, 2102
= Lunar eclipses of 2013–2016
=The lunar year series repeats after 12 lunations, or 354 days (shifting back about 10 days in sequential years). Because of the date shift, Earth's shadow will be about 11 degrees west in sequential events.
= Saros 137
=It is part of Saros series 137.
= Half-Saros cycle
=A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two annular solar eclipses of solar saros 144.
See also
List of lunar eclipses and List of 21st-century lunar eclipses
References
External links
2015 Sep 28 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
Hermit eclipse: 2015-09-28
Kata Kunci Pencarian:
- Gerhana bulan September 2015
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- Super Junior-K.R.Y. Asia Tour 2015: Phonograph
- Gerhana bulan Maret 2024
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- September 2015 lunar eclipse
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- Supermoon
