June 1983 lunar eclipse

A partial lunar eclipse took place on Saturday, June 25, 1983, the first of two lunar eclipses in 1983 with an umbral eclipse magnitude of 0.33479. A partial lunar eclipse happens when the Earth moves between the Sun and the Full Moon, but they are not precisely aligned. Only part of the Moon's visible surface moves into the dark part of the Earth's shadow. A partial lunar eclipse occurs when the Earth moves between the Sun and Moon but the three celestial bodies do not form a straight line in space. When that happens, a small part of the Moon's surface is covered by the darkest, central part of the Earth's shadow, called the umbra. The rest of the Moon is covered by the outer part of the Earth's shadow called the penumbra. The Earth's shadow on the moon was clearly visible in this eclipse, with 33% of the Moon in shadow; the partial eclipse lasted for 2 hours and 15 minutes.[1]

June 1983 lunar eclipse
Partial eclipse
Date25 June 1983
Gamma−0.81520
Magnitude0.33479
Saros cycle139 (20 of 81)
Partiality134 minutes, 36.3 seconds
Penumbral314 minutes, 49.5 seconds
Contacts (UTC)
P105:44:52.6
U107:14:56.2
Greatest08:22:17.6
U409:29:32.5
P410:59:42.1

Visibility

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It was completely visible over Australia, Pacific and the Americas.

 

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Eclipses in 1983

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Lunar year series

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Lunar eclipse series sets from 1980–1984
Descending node   Ascending node
Saros Date
Viewing
Type
Chart
Gamma Saros Date
Viewing
Type
Chart
Gamma
109 1980 Jul 27
 
Penumbral
 
1.41391 114 1981 Jan 20
 
Penumbral
 
−1.01421
119 1981 Jul 17
 
Partial
 
0.70454 124 1982 Jan 09
 
Total
 
−0.29158
129 1982 Jul 06
 
Total
 
−0.05792 134 1982 Dec 30
 
Total
 
0.37579
139 1983 Jun 25
 
Partial
 
−0.81520 144 1983 Dec 20
 
Penumbral
 
1.07468
149 1984 Jun 13
 
Penumbral
 
−1.52403
Last set 1980 Aug 26 Last set 1980 Mar 13
Next set 1984 May 15 Next set 1984 Nov 08


Half-Saros cycle

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A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[2] This lunar eclipse is related to two total solar eclipses of Solar Saros 146.

June 20, 1974 June 30, 1992
   


Saros cycle

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Lunar Saros series 139, repeating every 18 years and 11 days, has a total of 79 lunar eclipse events including 42 umbral lunar eclipses (15 partial lunar eclipses and 27 total lunar eclipses)..

Greatest First

The greatest eclipse of the series will occur on 2199 Nov 02, lasting 102 minutes.[3]
Penumbral Partial Total Central
1658 Dec 09 1947 Jun 03 2073 Aug 17 2109 Sep 09
Last
Central Total Partial Penumbral
2488 Apr 26 2542 May 30 2686 Aug 25 3065 Apr 13
1901–2100
1911 May 13 1929 May 23 1947 Jun 03
           
1965 Jun 14 1983 Jun 25 2001 Jul 05
           
2019 Jul 16 2037 Jul 27 2055 Aug 07
           
2073 Aug 17 2091 Aug 29

See also

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Notes

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  1. ^ Hermit Eclipse: Saros cycle 139
  2. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
  3. ^ Listing of Eclipses of cycle 139
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