August 1989 lunar eclipse

Total Lunar Eclipse August 17, 1989
Photo of the lunar eclipse taken from Marden, Sussex, England
The Moon passes west to east (right to left) across the Earth's umbral shadow, shown in hourly intervals.
Series	128 (39 of 71)
Duration (hr:mn:sc)
Totality	1:35:48
Partial	3:34:17
Penumbral	5:27:31
Contacts
P1	0:24:22UTC
U1	1:21:03
U2	2:20:17
Greatest	3:09:07
U3	3:56:05
U4	4:55:20
P4	5:51:54
The eclipse occurs in Capricornus

A total lunar eclipse took place at 0308 UT (GMT) on Thursday, August 17, 1989, the second of two total lunar eclipses in 1989.

The Moon passed through the center of the Earth's shadow.

Visibility

It was seen completely over South America, and rising over North America, and setting over Africa, and Europe.

Relations to other lunar eclipses

Eclipses of 1989

Lunar year series

This eclipse is the second of four lunar year eclipses occurring at the Moon's ascending node.

The lunar year series repeats after 12 lunations or 354 days (Shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events.

Lunar eclipse series sets from 1988–1991
Descending node				Ascending node
Saros	Date viewing	Type chart	Gamma	Saros	Date viewing	Type chart	Gamma
113	1988 Mar 03	Penumbral	0.98855	118	1988 Aug 27	Partial	−0.86816
123	1989 Feb 20	Total	0.29347	128	1989 Aug 17	Total	−0.14905
133	1990 Feb 09	Total	−0.41481	138	1990 Aug 06	Partial	0.63741
143	1991 Jan 30	Penumbral	−1.07522	148	1991 Jul 26	Penumbral	1.43698

Last set	1987 Apr 14			Last set	1987 Oct 07

Next set	1991 Dec 21			Next set	1991 Jun 27

Saros series

Lunar saros series 128, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 57 umbral eclipses (42 partial lunar eclipses and 15 total lunar eclipses). Solar Saros 135 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Greatest	First
The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100.7 minutes.^[1]	Penumbral	Partial	Total	Central
	1304 Jun 18	1430 Sep 2	1845 May 21	1899 Jun 23
	Last
	Central	Total	Partial	Penumbral
	2007 Aug 28	2097 May 21	2440 May 17	2566 Aug 2

Lunar Saros 128 contains 15 total lunar eclipses between 1845 and 2097 (in years 1845, 1863, 1881, 1899, 1917, 1935, 1953, 1971, 1989, 2007, 2025, 2043, 2061, 2079 and 2097). Solar Saros 135 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Metonic series

It is the third of five Metonic cycle eclipses, each being separated by 19 years: The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will in nearly the same location relative to the background stars.

Metonic lunar eclipse sets 1951–2027
Descending node			Ascending node
Saros	Date	Type	Saros	Date	Type
103	1951 Feb 21.88	Penumbral	108	1951 Aug 17.13	Penumbral

113	1970 Feb 21.35	Partial	118	1970 Aug 17.14	Partial

123	1989 Feb 20.64	Total	128	1989 Aug 17.13	Total

133	2008 Feb 21.14	Total	138	2008 Aug 16.88	Partial

143	2027 Feb 20.96	Penumbral	148	2027 Aug 17.30	Penumbral

Tritos series

The tritos series repeats 31 days short of 11 years at alternating nodes. Sequential events have incremental Saros cycle indices.

This series produces 23 total eclipses between June 22, 1880 and August 9, 2120.

Tritos eclipse series (subset 1901–2100)
Ascending node			Descending node
Saros	Date Viewing	Type chart	Saros	Date Viewing	Type chart
120	1902 Apr 22	Total	121	1913 Mar 22	Total
122	1924 Feb 20	Total	123	1935 Jan 19	Total
124	1945 Dec 19	Total	125	1956 Nov 18	Total
126	1967 Oct 18	Total	127	1978 Sep 16	Total
128	1989 Aug 17	Total	129	2000 Jul 16	Total
130	2011 Jun 15	Total	131	2022 May 16	Total
132	2033 Apr 14	Total	133	2044 Mar 13	Total
134	2055 Feb 11	Total	135	2066 Jan 11	Total
136	2076 Dec 10	Total	137	2087 Nov 10	Total
138	2098 Oct 10	Total

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 annular solar eclipses of Solar Saros 135.