A total eclipse of the Moon occurred on Saturday 10 December, 2011 UT, lasting from 11:33–17:29 UT. A shallow total eclipse saw the Moon in relative darkness for 51 minutes and 6 seconds. The Moon was 11% of its diameter into the Earth's umbral shadow, and should have been significantly darkened for viewers from North America (the beginning of the eclipse); eastern Asia and Australia; andmost of Europe and Africa (the end of the eclipse). The partial eclipse lasted for 3 hours and 32 minutes in total.

The timings of the phases of the eclipse are as follows. You would have been able to see each phase of the eclipse if the Moon was up at the corresponding time as seen from your location; however the penumbral phase would have been very difficult to see in practice:

Penumbral eclipse began: 11:33:36 UT
Partial eclipse began: 12:45:43 UT
Total eclipse began: 14:06:16 UT
Maximum eclipse: 14:31:49 UT
Total eclipse ended: 14:57:24 UT
Partial eclipse ended: 16:17:58 UT
Penumbral eclipse ended: 17:29:57 UT

During this eclipse the Moon was just 4 days past apogee, making it fairly small. At maximum eclipse it was 0.509° in apparent diameter, which is 4.1% smaller than average. The statistics page has information on the ranges of the sizes of the Sun and Moon.

Interactive Map

This map shows the visibility of the eclipse at various stages. The bright area in the middle saw the whole eclipse; the coloured bands to the right saw the start of the eclipse, and those on the left saw the end. Note that the map is approximate, and if you were near the edge of the area of visibility, the moon was very close to the horizon and may not have been practically visible.

You can use the zoom controls to zoom in and out, and pan to see areas of interest. Hover your mouse over the tags to see what was visible from each area on the map. The green marker in the centre shows where the Moon was directly overhead at maximum eclipse.

Overview Map

This map sourced from NASA's Eclipse Web Site shows the visibility of the eclipse. (Click on it for the full-sized version.)

Eclipse Season and Saros Series

This eclipse season contains 2 eclipses:

This was the 23rd eclipse in lunar Saros series 135.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 14:31:48 on 10 Dec UT TDT Date/time (max) 14:32:56 on 10 Dec TDT
Saros Series 135 Number in Series 22
Penumbral Magnitiude 2.186 Central Magnitiude 1.1061
Gamma -0.3882 Path Width (km)
Delta T 1m08s Error ± 0m01s (95%)
Penumbral Duration 5h56m Partial Duration 3h32m
Total Duration 51m06s
Partial Rating Total Rating
Sun Distance 147321152 km (4.7%) Moon Distance 397268 km (81.2%)
Sun Diameter 0.541° Moon Diameter 0.501° - 0.509°
Apogee 01:13 on 6 Dec UT Perigee 02:57 on 22 Dec UT
Contact p1 11:33:36 on 10 Dec UT Contact p2
Contact u1 12:45:43 on 10 Dec UT Contact u2 14:06:16 on 10 Dec UT
Max eclipse 14:31:49 on 10 Dec UT
Contact u3 14:57:24 on 10 Dec UT Contact u4 16:17:58 on 10 Dec UT
Contact p3 Contact p4 17:29:57 on 10 Dec UT

Note that while all dates and times on this site (except where noted) are in UT, which is within a second of civil time, the dates and times shown in NASA's eclipse listings are in the TDT timescale.

The Sun and Moon distances are shown in km, and as a percentage of their minimum - maximum distances; hence 0% is the closest possible (Earth's perihelion, or the Moon's closest possible perigee) and 100% is the farthest (aphelion, the farthest apogee). The statistics page has information on the ranges of sizes of the Sun and Moon.

Data last updated: 2015-06-21 22:11:46 UTC.