World Library  
Flag as Inappropriate
Email this Article

September 2015 lunar eclipse

Article Id: WHEBN0021477128
Reproduction Date:

Title: September 2015 lunar eclipse  
Author: World Heritage Encyclopedia
Language: English
Subject: April 2014 lunar eclipse, April 2015 lunar eclipse, October 2014 lunar eclipse, Lunar eclipse, March 2016 lunar eclipse
Collection: 2015 in Science, 21St-Century Lunar Eclipses, Lunar Eclipses
Publisher: World Heritage Encyclopedia

September 2015 lunar eclipse

Total lunar eclipse
September 28, 2015

The moon passes right to left through the Earth's shadow
Gamma -0.3296
Duration (hr:mn:sc)
Totality 1:11:55
Partial 3:19:52
Penumbral 5:10:41
Contacts (UTC)
P1 0:11:47
U1 1:07:11
U2 2:11:10
Greatest 2:47:07
U3 3:23:05
U4 4:27:03
P4 5:22:27

A total lunar eclipse will take place on September 28, 2015. It is the latter of two total lunar eclipses in 2015, and the final in a tetrad (four total lunar eclipses in series). Other eclipses in the tetrad are those of April 15, 2014, October 8, 2014, and April 4, 2015. This lunar eclipse will be particularly rare, because it is a harvest moon lunar eclipse, taking place also on the day of the closest supermoon of 2015.


  • Visibility 1
  • Background 2
  • Timing 3
  • Related eclipses 4
  • See also 5
  • References 6
  • External links 7


The eclipse will be visible over Europe, the Middle East, Africa, and the Americas.

View of earth from moon

Simulated appearance of earth and atmospheric ring of sunlight


A lunar eclipse occurs when the Moon passes within Earth's umbra (shadow). As the eclipse begins, the 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 the Earth's atmosphere into its umbra.[1]

The following simulation shows the approximate appearance of the Moon passing through the 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.


Local times of contacts
adjustments from
-7h -6h -5h -4h -3h -2h -1h 0h
Event Evening September 27 Morning Sept. 28
P1 Penumbral begins* 5:12 pm 6:12 pm 7:12 pm 8:12 pm 9:12 pm 10:12 pm 11:12 pm 12:12 am
U1 Partial begins 6:07 pm 7:07 pm 8:07 pm 9:07 pm 10:07 pm 11:07 pm 12:07 am 1:07 am
U2 Total begins 7:11 pm 8:11 pm 9:11 pm 10:11 pm 11:11 pm 12:11 am 1:11 am 2:11 am
Mid-eclipse 7:47 pm 8:47 pm 9:47 pm 10:47 pm 11:47 pm 12:47 am 1:47 am 2:47 am
U3 Total ends 8:23 pm 9:23 pm 10:23 pm 11:23 pm 12:23 am 1:23 am 2:23 am 3:23 am
U4 Partial ends 9:27 pm 10:27 pm 11:27 pm 12:27 am 1:27 am 2:27 am 3:27 am 4:27 am
P4 Penumbral ends 10:22 pm 11:22 pm 12:22 am 1:22 am 2:22 am 3:22 am 4:22 am 5:22 am

* The penumbral phase of the eclipse changes the appearance of the Moon only slightly and is generally not noticeable.[2]

Contact points relative to the earth's umbral and penumbral shadows, here with the moon near is descending node

The timing of total lunar eclipses are determined by its contacts:[3]

P1 (First contact): Beginning of the penumbral eclipse. The Earth's penumbra touches the Moon's outer limb.
U1 (Second contact): Beginning of the partial eclipse. The Earth's umbra touches the Moon's outer limb.
U2 (Third contact): Beginning of the total eclipse. The Moon's surface is entirely within the Earth's umbra.
Greatest eclipse: The peak stage of the total eclipse. The Moon is at its closest to the center of the Earth's umbra.
U3 (Fourth contact): End of the total eclipse. The Moon's outer limb exits the Earth's umbra.
U4 (Fifth contact): End of the partial eclipse. The Earth's umbra leaves the Moon's surface.
P4 (Sixth contact): End of the penumbral eclipse. The Earth's penumbra no longer makes contact with the Moon.

Related eclipses

The eclipse is the one of four lunar eclipses in a short-lived series at the descending 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.
Lunar eclipse series sets from 2013–2016
Ascending node   Descending node
Saros Viewing
Type Saros Viewing
2013 Apr 25
2013 Oct 18
2014 Apr 15
2014 Oct 08
132 2015 Apr 04
137 2015 Sep 28
142 2016 Mar 23
147 2016 Sep 16
Last set 2013 May 25 Last set 2012 Nov 28
Next set 2017 Feb 11 Next set 2016 Aug 08

See also


  1. ^ Fred Espenak and Jean Meeus. "Visual Appearance of Lunar Eclipses". NASA. Retrieved April 13, 2014. 
  2. ^ Espenak, Fred. "Lunar Eclipses for Beginners". MrEclipse. Retrieved April 7, 2014. 
  3. ^ Clarke, Kevin. "On the nature of eclipses". Inconstant Moon. Cyclopedia Selenica. Retrieved 19 December 2010. 

External links

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.