Solar eclipse of August 31, 1989

Solar eclipse of August 31, 1989
Solar eclipse of August 31, 1989
	Map
Type of eclipse
Nature	Partial
Gamma	−1.1928
Magnitude	0.6344
Maximum eclipse
Coordinates	61°18′S 23°36′E / 61.3°S 23.6°E
Times (UTC)
Greatest eclipse	5:31:47
References
Saros	154 (5 of 71)
Catalog # (SE5000)	9485

A partial solar eclipse occurred at the Moon's descending node of orbit on Thursday, August 31, 1989, with a magnitude of 0.6344. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.

Related eclipses[edit]

Solar eclipses of 1986–1989[edit]

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.^[1]

Solar eclipse series sets from 1986 to 1989
Ascending node			Descending node
Saros	Map	Gamma	Saros	Map	Gamma
119	April 9, 1986 Partial	−1.0822	124	October 3, 1986 Hybrid	0.9931
129	March 29, 1987 Hybrid	−0.3053	134	September 23, 1987 Annular	0.2787
139	March 18, 1988 Total	0.4188	144	September 11, 1988 Annular	−0.4681
149	March 7, 1989 Partial	1.0981	154	August 31, 1989 Partial	−1.1928

Saros 154[edit]

This eclipse is a part of Saros series 154, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on July 19, 1917. It contains annular eclipses from October 3, 2043 through March 27, 2332; hybrid eclipses from April 7, 2350 through April 29, 2386; and total eclipses from May 9, 2404 through May 29, 3035. The series ends at member 71 as a partial eclipse on August 25, 3179. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

The longest duration of annularity will be produced by member 9 at 3 minutes, 41 seconds on October 13, 2061, and the longest duration of totality will be produced by member 35 at 4 minutes, 50 seconds on July 25, 2530. All eclipses in this series occur at the Moon’s descending node of orbit.^[2]

Series members 1–16 occur between 1917 and 2200:
1	2	3
July 19, 1917	July 30, 1935	August 9, 1953
4	5	6
August 20, 1971	August 31, 1989	September 11, 2007
7	8	9
September 21, 2025	October 3, 2043	October 13, 2061
10	11	12
October 24, 2079	November 4, 2097	November 16, 2115
13	14	15
November 26, 2133	December 8, 2151	December 18, 2169
16
December 29, 2187

Metonic series[edit]

The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days).

22 eclipse events, progressing from north to south between April 8, 1902, and August 31, 1989:
April 7–8	January 24–25	November 12	August 31-September 1	June 19–20
108			114	116
April 8, 1902			August 31, 1913	June 19, 1917
118	120	122	124	126
April 8, 1921	January 24, 1925	November 12, 1928	August 31, 1932	June 19, 1936
128	130	132	134	136
April 7, 1940	January 25, 1944	November 12, 1947	September 1, 1951	June 20, 1955
138	140	142	144	146
April 8, 1959	January 25, 1963	November 12, 1966	August 31, 1970	June 20, 1974
148	150	152	154
April 7, 1978	January 25, 1982	November 12, 1985	August 31, 1989