Partial eclipse | |||||||||||||
Date | 7 August 2017 | ||||||||||||
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Gamma | 0.8668 | ||||||||||||
Magnitude | 0.2464 | ||||||||||||
Saros cycle | 119 (62 of 83) | ||||||||||||
Partiality | 115 minutes, 15 seconds | ||||||||||||
Penumbral | 300 minutes, 54 seconds | ||||||||||||
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A partial lunar eclipse took place at the Moon's descending node on the evening of 7 August and the morning pre-dawn on 8 August 2017, the second of two lunar eclipses in 2017. The Moon was only slightly covered by the Earth's umbral shadow at maximum eclipse. The Moon's apparent diameter was smaller because the eclipse occurred only 5 days after apogee (Apogee on 2 August 2017).
The Moon inside the umbral shadow was a subtle red, but hard to see in contrast to the much brighter Moon in the outer penumbral shadow. The Moon looks red because it is illuminated by sunlight refracted through Earth's atmosphere. The blue light is scattered and absorbed by the atmosphere, leaving red light to shine onto the lunar surface. [1]
The solar eclipse of 21 August 2017, occurred fourteen days later, in the same eclipse season (Middle of the eclipse season occurred on 16 August 2017). It was the first total solar eclipse visible in the contiguous United States since the solar eclipse of 26 February 1979.
It was visible over eastern Europe, Africa, Asia, and Australia with maximal visibility centered on Indian Ocean.
Visibility map |
Lunar eclipse series sets from 2016–2020 | ||||||||
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Descending node | Ascending node | |||||||
Saros | Date | Type Viewing | Gamma | Saros | Date Viewing | Type Chart | Gamma | |
109 | 2016 Aug 18 | Penumbral | 1.56406 | 114 | 2017 Feb 11 | Penumbral | −1.02548 | |
119 | 2017 Aug 07 | Partial | 0.86690 | 124 | 2018 Jan 31 | Total | −0.30143 | |
129 | 2018 Jul 27 | Total | 0.11681 | 134 | 2019 Jan 21 | Total | 0.36842 | |
139 | 2019 Jul 16 | Partial | −0.64300 | 144 | 2020 Jan 10 | Penumbral | 1.07270 | |
149 | 2020 Jul 05 | Penumbral | −1.36387 | |||||
Last set | 2016 Sep 16 | Last set | 2016 Mar 23 | |||||
Next set | 2020 Jun 05 | Next set | 2020 Nov 30 |
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). [2] This lunar eclipse is related to two total solar eclipses of Solar Saros 126.
1 August 2008 | 12 August 2026 |
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A total lunar eclipse took place on 3 March 2007, the first of two eclipses in 2007. The Moon entered the penumbral shadow at 20:18 UTC, and the umbral shadow at 21:30 UTC. The total phase lasted between 22:44 UTC and 23:58 UTC with a distinctive brick-red shade. The Moon left the umbra shadow at 01:11 UTC and left the penumbra shadow at 02:24 UTC 2007-03-04. The second lunar eclipse of 2007 occurred on 28 August.
A total lunar eclipse occurred on February 20 and February 21, 2008. It was visible in the eastern evening sky on February 20 for all of North and South America, and on February 21 in the predawn western sky from most of Africa and Europe. Greatest Eclipse occurring on Thursday, February 21, 2008, at 03:26:03 UTC, totality lasting 49 minutes and 45.6 seconds.
A partial lunar eclipse took place on 16 August 2008, the second of two lunar eclipses in 2008, with the first being a total eclipse on 20 February 2008. The next lunar eclipse was a penumbral eclipse occurring on 9 February 2009, while the next total lunar eclipse occurred on 21 December 2010.
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A penumbral lunar eclipse took place on Tuesday, January 20, 1981, the first of two lunar eclipses in 1981. In a rare total penumbral eclipse, the entire Moon was partially shaded by the Earth, and the shading across the Moon should have been quite visible at maximum eclipse. The penumbral phase lasted for 4 hours and 24 minutes in all, though for most of it, the eclipse was extremely difficult or impossible to see. The moon's apparent diameter was larger because the eclipse occurred 5.2 days after perigee.
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