| Solar eclipse of February 25, 1971 | |
|---|---|
 Map | |
| Type of eclipse | |
| Nature | Partial |
| Gamma | 1.1188 |
| Magnitude | 0.7872 |
| Maximum eclipse | |
| Coordinates | 61°24′N 33°30′W / 61.4°N 33.5°W / 61.4; -33.5 |
| Times (UTC) | |
| Greatest eclipse | 9:38:07 |
| References | |
| Saros | 149 (18 of 71) |
| Catalog # (SE5000) | 9444 |
A partial solar eclipse occurred at the Moon's ascending node of orbit on Thursday, February 25, 1971, with a magnitude of 0.7872. 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. In this partial solar eclipse, the Moon covered 78.7% of the Sun.
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]
The partial solar eclipse on July 22, 1971 occurs in the next lunar year eclipse set.
| Solar eclipse series sets from 1968 to 1971 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 119 | March 28, 2968 Partial |
−1.037 | 124 | September 22, 1968 Total |
0.9451 | |
| 129 | March 18, 1969 Annular |
−0.2704 | 134 | September 11, 1969 Annular |
0.2201 | |
139 Totality in Williamston, NC USA |
March 7, 1970 Total |
0.4473 | 144 | August 31, 1970 Annular |
−0.5364 | |
| 149 | February 25, 1971 Partial |
1.1188 | 154 | August 20, 1971 Partial |
−1.2659 | |
This eclipse is a part of Saros series 149, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on August 21, 1664. It contains total eclipses from April 9, 2043 through October 2, 2331; hybrid eclipses from October 13, 2349 through November 3, 2385; and annular eclipses from November 15, 2403 through July 13, 2800. The series ends at member 71 as a partial eclipse on September 28, 2926. 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 totality will be produced by member 31 at 4 minutes, 10 seconds on July 17, 2205, and the longest duration of annularity will be produced by member 62 at 5 minutes, 6 seconds on June 21, 2764. All eclipses in this series occur at the Moon’s ascending node of orbit.[2]
| Series members 9–30 occur between 1801 and 2200: | ||
|---|---|---|
| 9 | 10 | 11 |
 November 18, 1808 |
 November 29, 1826 |
 December 9, 1844 |
| 12 | 13 | 14 |
 December 21, 1862 |
 December 31, 1880 |
 January 11, 1899 |
| 15 | 16 | 17 |
 January 23, 1917 |
 February 3, 1935 |
 February 14, 1953 |
| 18 | 19 | 20 |
February 25, 1971 |
 March 7, 1989 |
 March 19, 2007 |
| 21 | 22 | 23 |
 March 29, 2025 |
 April 9, 2043 |
 April 20, 2061 |
| 24 | 25 | 26 |
 May 1, 2079 |
 May 11, 2097 |
 May 24, 2115 |
| 27 | 28 | 29 |
 June 3, 2133 |
 June 14, 2151 |
 June 25, 2169 |
| 30 | ||
 July 6, 2187 | ||
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). All eclipses in this table occur at the Moon's ascending node.
| 22 eclipse events between December 13, 1898 and July 20, 1982 | ||||
|---|---|---|---|---|
| December 13–14 | October 1–2 | July 20–21 | May 9 | February 24–25 |
| 111 | 113 | 115 | 117 | 119 |
 December 13, 1898 |
 July 21, 1906 |
 May 9, 1910 |
 February 25, 1914 | |
| 121 | 123 | 125 | 127 | 129 |
 December 14, 1917 |
 October 1, 1921 |
 July 20, 1925 |
 May 9, 1929 |
 February 24, 1933 |
| 131 | 133 | 135 | 137 | 139 |
 December 13, 1936 |
 October 1, 1940 |
 July 20, 1944 |
 May 9, 1948 |
 February 25, 1952 |
| 141 | 143 | 145 | 147 | 149 |
 December 14, 1955 |
 October 2, 1959 |
 July 20, 1963 |
 May 9, 1967 |
February 25, 1971 |
| 151 | 153 | 155 | ||
 December 13, 1974 |
 October 2, 1978 |
 July 20, 1982 | ||
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