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, and the Moon data page displays detailed
information on the Moon's key dates.
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.
The interactive map is currently not available.
Overview Map
This map sourced from NASA Goddard Space flight Center: GSFC Eclipse Web SiteGSFC Eclipse Web Site
The primary source of all the information on eclipses presented here at Hermit Eclipse. (NASA Goddard Space flight Center)
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:
This Saros series, lunar Saros series 135,
is linked to solar Saros series 142. The
nearest partner eclipses in that 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 | 23 |
| 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 listingsGSFC Eclipse Web Site
The primary source of all the information on eclipses presented here at Hermit Eclipse. (NASA Goddard Space flight Center)
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, and the Moon data page displays detailed
information on the Moon's key dates.
Data last updated: 2015-06-21 22:11:46 UTC.
