A penumbral eclipse of the Moon occurred on Tuesday 20 December, 1983 UT, with maximum eclipse at 01:49 UT. At maximum eclipse, 89% of the Moon's disc was partially shaded by the Earth, which caused a slight shadow gradient across its disc; this subtle effect may have been visible to careful observers. No part of the Moon was in complete shadow. The eclipse lasted 4 hours and 2 minutes overall.

The penumbral eclipse lasted for 4 hours and 2 minutes. Maximum eclipse was at 01:49:03 UT.

During this eclipse the Moon was just 2 days before perigee, making it relatively large. At maximum eclipse it was 0.548° in apparent diameter, which is 3.2% larger 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 maximum eclipse, when it was visible within the bright area on the map. 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. The green marker in the centre shows where the Moon will be directly overhead at maximum eclipse.

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 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 lunar Saros series 144.The surrounding eclipses in this Saros series are:

This Saros series, lunar Saros series 144, is linked to solar Saros series 151. The nearest partner eclipses in that series are:

Eclipse Parameters

UT Date/time (max) 01:49:03 on 20 Dec UT TDT Date/time (max) 01:49:57 on 20 Dec TDT
Saros Series 144 Number in Series 13
Penumbral Magnitiude 0.889 Central Magnitiude -0.1167
Gamma 1.0746 Path Width (km)
Delta T 0m54s Error ± 0m00s (95%)
Penumbral Duration 4h02m Partial Duration
Total Duration
Partial Rating Total Rating
Sun Distance 147169847 km (1.5%) Moon Distance 369617 km (26.3%)
Sun Diameter 0.542° Moon Diameter 0.539° - 0.548°
Apogee 00:34 on 11 Dec UT Perigee 18:25 on 22 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)
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, and the Moon data page displays detailed information on the Moon's key dates.

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