August 2017 lunar eclipse

A partial lunar eclipse took place at the Moon's descending node on the evening of August 7 and the morning pre-dawn on August 8, 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 August 2, 2017).

Partial Lunar Eclipse
August 7, 2017

Partiality from Kuwait, 18:14 UTC

This chart shows the right-to-left hourly motion of the moon through the earth's shadow.
Series (and member)119 (62 of 83)
Duration (hr:mn:sc)
Partial1:55:14
Penumbral5:00:53
Contacts
P115:50:02 UTC
U117:22:55
Greatest18:20:28
U419:18:10
P420:50:56

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 August 21, 2017, occurred fourteen days later, in the same eclipse season (Middle of the eclipse season occurred on August 16, 2017). It was the first total solar eclipse visible in the contiguous United States since the solar eclipse of February 26, 1979.

The eclipse season started on July 30, 2017, and ended on September 2, 2017.

Visibility

It was visible over eastern Europe, Africa, Asia, and Australia with maximal visibility centered on Indian Ocean.


Visibility map

Eclipses of 2017

Lunar year series

Saros series

It is part of Saros series 119 (member 61 of 82).

Half-Saros cycle

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.

August 1, 2008 August 12, 2026

See also

References
  1. https://earthsky.org/space/why-does-the-moon-look-red-during-a-total-lunar-eclipse#:~:text=A%20lunar%20eclipse%20takes%20place,moon%20passes%20through%20Earth%27s%20shadow.&text=Bottom%20line%3A%20The%20moon%20can,and%20refracted%20by%20Earth%27s%20atmosphere
  2. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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