A partial eclipse of the Sun occurred on Tuesday 4 January, 1639 UT (25 Dec, 1638 Old Style), with maximum eclipse at 04:55 UT. With only 0% of the Sun covered at maximum eclipse, this was a very marginal eclipse at best, and rather uninteresting.

Maximum eclipse was at 04:55:14 UT.

During this eclipse the Sun was 0.542° in apparent diameter, 1.7% larger than average. The Moon was just 4 days before apogee, making it very small. At maximum eclipse it was 0.502° in apparent diameter, which is 5.5% 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 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]
https://eclipse.gsfc.nasa.gov/eclipse.html
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 3 eclipses:

This was the 1st eclipse in solar Saros series 145.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 04:55:14 on 4 Jan UT TDT Date/time (max) 04:56:19 on 4 Jan TDT
Saros Series 145 Number in Series 0
Penumbral Magnitiude Central Magnitiude 0.0009
Gamma 1.565 Path Width (km) 0
Delta T 1m05s Error ± 0m39s (95%)
Penumbral Duration Partial Duration
Total Duration
Partial Rating Total Rating
Sun Distance 147098980 km (0.1%) Moon Distance 396849 km (80.4%)
Sun Diameter 0.542° Moon Diameter 0.502° - 0.502°
Perigee 19:22 on 23 Dec UT Apogee 21:12 on 8 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 listingsGSFC Eclipse Web Site
The primary source of all the information on eclipses presented here at Hermit Eclipse. [NASA Goddard Space flight Center]
https://eclipse.gsfc.nasa.gov/eclipse.html
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 22:11:45 UTC.