June 2010 lunar eclipse

A partial lunar eclipse occurred on 26 June 2010, the first of two lunar eclipses in 2010. At maximum eclipse, 53.68% of the Moon was covered by the Earth's shadow.[1]

Partial Lunar Eclipse
26 June 2010

From Canberra, Australia at 11:31 UTC

This chart shows the right-to-left hourly motion of the Moon through the Earth's shadow.
Series (and member)120 (58 of 84)
Magnitude0.5368
Gamma-0.7091
Duration (hr:mn:sc)
Partial2:42:52
Penumbral5:22:07
Contacts (UTC)
P18:57:24
U110:16:58
Greatest11:38:27
U412:59:50
P414:19:31

The Moon's hourly motion across the Earth's shadow in the constellation of Sagittarius.

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

Visibility
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 rainshowers and thick clouds, but it was clearly visible throughout the night sky.


This simulation shows the view of the Earth from the Moon from the center of the Earth at greatest eclipse.

Map

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

Times of over North America
Event PDT
(UTC−7)		 MDT
(UTC−6)		 CDT
(UTC−5)		 EDT
(UTC−4)		 UTC
Start penumbral (P1) 1:57 a.m. 2:57 a.m. 3:57 a.m. 4:57 a.m. 8:57 a.m.
Start umbral (U1) 3:17 a.m. 4:17 a.m. 5:17 a.m. 6:17 a.m. 10:17 a.m.
Greatest eclipse 4:38 a.m. 5:38 a.m. Set Set 11:38 a.m.
End umbral (U4) Set Set Set Set 1:00 p.m.
End penumbral (P4) Set Set Set Set 2:20 p.m.

Eclipses of 2010

Lunar year (354 days)

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.

Lunar eclipse series sets from 2009–2013
Ascending node   Descending node
Saros #
Photo		 Date
Viewing		 Type
chart		 Gamma Saros #
Photo		 Date
Viewing		 Type
chart		 Gamma
110 2009 Jul 07
 penumbral
 −1.4916 115
 2009 Dec 31
 partial
 0.9766
120
 2010 Jun 26
 partial
 −0.7091 125
 2010 Dec 21
 total
 0.3214
130
 2011 Jun 15
 total
 0.0897 135
 2011 Dec 10
 total
 −0.3882
140
 2012 Jun 04
 partial
 0.8248 145 2012 Nov 28
 penumbral
 −1.0869
150 2013 May 25
 penumbral
 1.5351
Last set 2009 Aug 06 Last set 2009 Feb 9
Next set 2013 Apr 25 Next set 2013 Oct 18

Metonic series (19 years)

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)

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 127.

21 June 2001 2 July 2019

Tritos series

Tzolkinex

See also

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