A partial eclipse of the Sun occurred on Tuesday 4 January, 2011 UT, lasting from 06:40–11:00 UT. This was a deep partial eclipse, with 86% of the Sun covered for viewers closest to the center. This provided a significant spectacle for those who saw it in northern Africa, the Middle East, most of Europe, and western Asia.

The timings of the phases of the overall eclipse worldwide are as follows. In any particular place it would have been seen for a significantly shorter duration as the shadow moved across the Earth:

Partial eclipse began: 06:40:11 UT
Maximum eclipse: 08:50:34 UT
Partial eclipse ended: 11:00:52 UT

During this eclipse the Sun was 0.542° in apparent diameter, 1.7% larger than average. The Moon was 10 days after perigee and 6 days before apogee. At maximum eclipse it was 0.510° in apparent diameter, which is 4.0% smaller than average. This has no real effect on this eclipse, since the Moon's central shadow misses the Earth, making this a partial eclipse. The statistics page has information on the ranges of the sizes of the Sun and Moon.

Overview Map

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

Eclipse Season and Saros Series

This eclipse season contains 2 eclipses:

This was the 14th eclipse in solar Saros series 151.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 08:50:35 on 4 Jan UT TDT Date/time (max) 08:51:42 on 4 Jan TDT
Saros Series 151 Number in Series 13
Penumbral Magnitiude Central Magnitiude 0.8576
Gamma 1.0627 Path Width (km) 0
Delta T 1m07s Error ± 0m01s (95%)
Penumbral Duration Partial Duration
Total Duration
Partial Rating Total Rating
Sun Distance 147105810 km (0.2%) Moon Distance 390452 km (67.7%)
Sun Diameter 0.542° Moon Diameter 0.510° - 0.510°
Perigee 12:25 on 25 Dec UT Apogee 05:38 on 10 Jan UT
Contact p1 06:40:11 on 4 Jan UT Contact p2
Contact u1 Contact u2
Max eclipse 08:50:34 on 4 Jan UT
Contact u3 Contact u4
Contact p3 Contact p4 11:00:52 on 4 Jan 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.