Английская Википедия:April 2015 lunar eclipse

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Use dmy dates Шаблон:Infobox lunar eclipse A total lunar eclipse took place on 4 April 2015. It is the former of two total lunar eclipses in 2015, and the third in a tetrad (four total lunar eclipses in series). Other eclipses in the tetrad are those of 15 April 2014, 8 October 2014, and 28 September 2015.

This is the 30th member of Lunar Saros 132, and the first total eclipse. The previous event was the March 1997 lunar eclipse, being slightly partial.

Duration

Totality lasted only 4 minutes and 43 seconds,[1] making it the shortest lunar totality in almost five centuries since 17 October 1529 (which lasted 1 minute and 42 seconds). It was claimed by some that due to the oblateness of the Earth, it may have actually just been a partial eclipse.[2] It was the sixth total lunar eclipse out of nine with totality under 5 minutes in a five millennium period between 2,000 BC and 3,000 AD. The eclipsed moon was 12.9% smaller in apparent diameter than the supermoon September 2015 lunar eclipse, measured as 29.66' and 33.47' in diameter from the center of the Earth. It occurred 3 days past apogee at 29.42'.

Файл:Supermoon lunar eclipse 2015.png

Visibility

The eclipse was visible across the Pacific, including all of Australia and New Zealand. It was visible near sunrise for North America, and after sunset for eastern Asia including India.

Файл:Lunar eclipse from moon-2015Apr04.png Файл:Lunar eclipse chart close-2015Apr04.png
Файл:Visibility Lunar Eclipse 2015-04-04.png
Visibility map

Background

Шаблон:Main 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.[3]

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 southern portion of the Moon will be closest to the center of the shadow, making it darkest, and most red in appearance.

Файл:Animation April 4 2015 lunar eclipse appearance.gif

Gallery

Файл:Lunar Eclipse phase.jpg
Progression from Bali, Indonesia
Файл:Total eclipse of the moon on 4 Apr. 2015, Taiwan (16415899064).jpg
Time-lapsed image from Taiwan 		Файл:April 4 Eclipse (16826858317).jpg
Sequence from Fox Observatory in Sunrise, Florida
Файл:Lunar Eclipse - April 4, 2015 from Melbourne (FL) (16410545874).jpg
Sequence from Melbourne, Florida 		Файл:Fading Moon (16867776368).jpg
Progression from St. Louis, Missouri

Timing

Local times of contacts
Time Zone
adjustments from
UTC 		+8h +11h +13h -10h -8h -7h -6h -5h -4h
AWST AEDT NZDT HST AKDT PDT MDT CDT EDT
Event Evening April 4 Morning April 4
P1 Penumbral begins N/A† 8:01 pm 10:01 pm 11:01 pm 1:01 am 2:01 am 3:01 am 4:01 am 5:01 am
U1 Partial begins 6:16 pm 9:16 pm 11:16 pm 12:16 am 2:16 am 3:16 am 4:16 am 5:16 am 6:16 am
U2 Total begins 7:58 pm 10:58 pm 12:58 am 1:58 am 3:58 am 4:58 am 5:58 am 6:58 am Set
Greatest eclipse 8:00 pm 11:00 pm 1:00 am 2:00 am 4:00 am 5:00 am 6:00 am 7:00 am Set
U3 Total ends 8:03 pm 11:03 pm 1:03 am 2:03 am 4:03 am 5:03 am 6:03 am Set Set
U4 Partial ends 9:45 pm 12:45 am 2:45 am 3:45 am 5:45 am Set Set Set Set
P4 Penumbral ends 10:59 pm 1:59 am 3:59 am 3:59 am 5:59 am Set Set Set Set

† The Moon was not visible during this part of the eclipse in this time zone.

Файл:Lunar eclipse contact diagram.svg
Contact points relative to the Earth's umbral and penumbral shadows, here with the Moon near its descending node.

Шаблон:Total lunar eclipse contacts

Related eclipses

Eclipses of 2015

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[4] This lunar eclipse is related to two total solar eclipses of solar saros 139.

29 March 2006 8 April 2024
Файл:SE2006Mar29T.png Файл:SE2024Apr08T.png

Lunar year series

The eclipse is the one of four lunar eclipses in a short-lived series at the ascending node of the Moon's orbit.

The lunar year series repeats after 12 lunations, or 354 days (shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events. Шаблон:Lunar eclipse set 2013-2016

Saros series

Шаблон:Lunar Saros 132 summary

Tzolkinex

See also

Notes

Шаблон:Reflist

External links

Шаблон:Commons category

Шаблон:Lunar eclipses

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ Шаблон:Cite web
  2. ↑ Шаблон:Cite news
  3. ↑ Шаблон:Cite web
  4. ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:April_2015_lunar_eclipse&oldid=13217465