June 2010 lunar eclipse

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Partial Lunar Eclipse
June 26, 2010
Lunar eclipse june 2010 northup.jpg
Near greatest eclipse from Canberra, Australia, at 11:31 UTC
(Reoriented south on bottom)
Lunar eclipse chart close-2010jun26.png
This chart shows the right-to-left hourly motion of the moon through the earth's shadow.
The moon inside the umbral shadow will be a subtle red, but hard to see in contrast to the much brighter moon remaining in the outer penumbral shadow.
Series (and member) 120 (58 of 84)
Duration (hr:mn:sc)
Partial 2:42:52
Penumbral 5:22:07
P1 8:57:24 UTC
U1 10:16:58 UTC
Greatest 11:38:27 UTC
U4 12:59:50 UTC
P4 14:19:31 UTC
Lunar eclipse chart-10jun26.png
The moon's hourly motion across the Earth's shadow in the constellation of Sagittarius

The partial lunar eclipse of June 26, 2010 was the first of two lunar eclipses in 2010. At maximum eclipse 53.7% of the moon was covered by the earth's shadow.[1]

This eclipse preceded by two weeks the total Solar eclipse of July 11, 2010 over the South Pacific.

The next total lunar eclipse, visible over North and South America, occurred six months later, on December 21, 2010.

This eclipse is a part of Lunar Saros 120 series, repeating every 18 years and 10 days, last occurring on June 15, 1992, and will next repeat on July 6, 2028. This series is winding down: The final total eclipse of this series was on May 14, 1938 and the final partial lunar eclipse will be on July 28, 2064.


NASA chart of the eclipse

The entire umbral phase was visible after sunset Saturday evening throughout the Pacific, New Zealand, Australia, the Philippines and Japan. The point where the moon was directly overhead at maximum eclipse lay over the South Pacific Ocean, far to the southwest of Hawaii. The lunar eclipse seen over the Philippines on Saturday evening despite of rainshowers and thick clouds, but it clearly visible throughout the night sky.

Lunar eclipse from moon-2010Jun26.png
This simulation shows the view of the earth from the moon from the center of the earth at greatest eclipse.


Visibility Lunar Eclipse 2010-06-26.png

It was seen before sunrise on Saturday morning setting over western North and South America:

Times of over North America
Event PDT
Start penumbral (P1) 1:57 a.m. 2:57 a.m. 3:57 a.m. 4:57 a.m.
Start umbral (U1) 3:17 a.m. 4:17 a.m. 5:17 a.m. 6:17 a.m.
Greatest eclipse 4:38 a.m. 5:38 a.m. Set Set
End umbral (U4) Set Set Set Set
End penumbral (P4) Set Set Set Set

Photo gallery[edit]



Related eclipses[edit]

Lunar year (354 days)[edit]

This eclipse is the one of five lunar eclipses in a short-lived series. 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.

Metonic series (19 years)[edit]

The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the earth's shadow will be in nearly the same location relative to the background stars.

Ascending node Descending node
  1. 1991 Jun 27 - penumbral (110)
  2. 2010 Jun 26 - partial (120)
  3. 2029 Jun 26 - total (130)
  4. 2048 Jun 26 - partial (140)
  5. 2067 Jun 27 - penumbral (150)
  1. 1991 Dec 21 - partial (115)
  2. 2010 Dec 21 - total (125)
  3. 2029 Dec 20 - total (135)
  4. 2048 Dec 20 - partial (145)
Metonic lunar eclipse 1991-2067A.png Metonic lunar eclipse 1991-2048D.png

Half-Saros cycle[edit]

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 127.

June 21, 2001 July 2, 2019
SE2001Jun21T.png SE2019Jul02T.png

See also[edit]


  1. ^ SPACE.com: Partial Lunar Eclipse Coming On June 26
  2. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

External links[edit]