Solar eclipse of August 31, 1970

Solar eclipse of August 31, 1970
Map
Type of eclipse
NatureAnnular
Gamma−0.5364
Magnitude0.94
Maximum eclipse
Duration407 sec (6 m 47 s)
Coordinates20°18′S 164°00′W / 20.3°S 164°W / -20.3; -164
Max. width of band258 km (160 mi)
Times (UTC)
Greatest eclipse21:55:30
References
Saros144 (14 of 70)
Catalog # (SE5000)9443

An annular solar eclipse occurred on Monday, August 31 – Tuesday, September 1, 1970. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Annularity was visible from the Territory of Papua and New Guinea (today's Papua New Guinea), Gilbert and Ellice Islands (the part that belongs to Tuvalu now) on September 1 (Tuesday), West Samoa (name changed to Samoa later) and the whole American Samoa except Swains Island on August 31 (Monday).

Related eclipses

Solar eclipses of 1968–1971

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.

Solar eclipse series sets from 1968–1971
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
119
1968 March 28
Partial
−1.03704 124
1968 September 22
Total
0.94507
129
1969 March 18
Annular
−0.27037 134
1969 September 11
Annular
0.22014
139
1970 March 7
Total
0.44728 144
1970 August 31
Annular
−0.53640
149
1971 February 25
Partial
1.11876 154
1971 August 20
Partial
−1.26591
A partial solar eclipse of July 22, 1971 occurs in the next lunar year set.

Saros 144

It is a part of Saros cycle 144, repeating every 18 years, 11 days, containing 70 events. The series started with partial solar eclipse on April 11, 1736. It contains annular eclipses from July 7, 1880, through August 27, 2565. There are no total eclipses in the series. The series ends at member 70 as a partial eclipse on May 5, 2980. The longest duration of annularity will be 9 minutes, 52 seconds on December 29, 2168.

Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

Metonic series

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).


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