June 1983 lunar eclipse

June 1983 lunar eclipse
Partial eclipse
Date	25 June 1983
Gamma	−0.81520
Magnitude	0.33479
Saros cycle	139 (20 of 81)
Partiality	134 minutes, 36.3 seconds
Penumbral	314 minutes, 49.5 seconds
P1
Contacts (UTC)
P1	05:44:52.6
U1	07:14:56.2
Greatest	08:22:17.6
U4	09:29:32.5
P4	10:59:42.1
	← December 1982 December 1983 →

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]

Visibility

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

Related lunar eclipses

Eclipses in 1983

A total solar eclipse at the Moon's ascending node of the orbit on Saturday, June 11th, 1983.
A partial lunar eclipse at the Moon's descending node of the orbit on Saturday, June 25th, 1983.
An annular solar eclipse at the Moon's descending node of the orbit on Sunday, December 04th, 1983.
A penumbral lunar eclipse at the Moon's ascending node of the orbit on Tuesday, December 20th, 1983.

Lunar year series

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

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

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