| Solar eclipse of January 26, 1990 | |
|---|---|
 Map | |
| Type of eclipse | |
| Nature | Annular |
| Gamma | −0.9457 |
| Magnitude | 0.967 |
| Maximum eclipse | |
| Duration | 123 sec (2 m 3 s) |
| Coordinates | 71°00′S 22°12′W / 71°S 22.2°W |
| Max. width of band | 373 km (232 mi) |
| Times (UTC) | |
| Greatest eclipse | 19:31:24 |
| References | |
| Saros | 121 (59 of 71) |
| Catalog # (SE5000) | 9486 |
An annular solar eclipse occurred on January 26, 1990. 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.
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] This semester series contains only 7 eclipses.
| Solar eclipse series sets from 1990–1992 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 111 | 1989 February 6 | −1.56550 | 116 | 1989 August 1 | 1.58396 | |
| 121 | 1990 January 26 Annular |
−0.94571 | 126 | 1990 July 22 Total |
0.75972 | |
| 131 | 1991 January 15 Annular |
−0.27275 | 136 From Playas del Coco |
1991 July 11 Total |
−0.00412 | |
| 141 | 1992 January 4 Annular |
0.40908 | 146 | 1992 June 30 Total |
−0.75120 | |
| 151 | 1992 December 24 Partial |
1.07106 | 156 | 1993 June 20 | −1.56439 | |
Solar saros 121, repeating every about 18 years, 11 days, and 8 hours, contains 71 events. The series started with a partial solar eclipse on April 25, 944. It contains total eclipses from July 10, 1070, to October 9, 1809. It contains hybrid eclipses on October 20, 1827, and October 30, 1845. It contains annular eclipses from November 11, 1863, to February 28, 2044. The series ends at member 71 as a partial eclipse on June 7, 2206. The longest total eclipse occurred on June 21, 1629, with greatest duration of totality at 6 minutes and 20 seconds. The longest annular eclipse will occur on February 28, 2044, with greatest duration of annularity at 2 minutes and 27 seconds.[2]
| Series members 49–65 occur between 1801 and 2100: | ||
|---|---|---|
| 49 | 50 | 51 |
 October 9, 1809 |
 October 20, 1827 |
 October 30, 1845 |
| 52 | 53 | 54 |
 November 11, 1863 |
 November 21, 1881 |
 December 3, 1899 |
| 55 | 56 | 57 |
 December 14, 1917 |
 December 25, 1935 |
 January 5, 1954 |
| 58 | 59 | 60 |
 January 16, 1972 |
January 26, 1990 |
 February 7, 2008 |
| 61 | 62 | 63 |
 February 17, 2026 |
 February 28, 2044 |
 March 11, 2062 |
| 64 | 65 | |
 March 21, 2080 |
 April 1, 2098 | |
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.
| 21 eclipse events between June 21, 1982, and June 21, 2058 | ||||
|---|---|---|---|---|
| June 21 | April 8–9 | January 26 | November 13–14 | September 1–2 |
| 107 | 109 | 111 | 113 | 115 |
| June 21, 1963 | April 9, 1967 | January 26, 1971 | November 14, 1974 | September 2, 1978 |
| 117 | 119 | 121 | 123 | 125 |
 June 21, 1982 |
 April 9, 1986 |
January 26, 1990 |
 November 13, 1993 |
 September 2, 1997 |
| 127 | 129 | 131 | 133 | 135 |
 June 21, 2001 |
 April 8, 2005 |
 January 26, 2009 |
 November 13, 2012 |
 September 1, 2016 |
| 137 | 139 | 141 | 143 | 145 |
 June 21, 2020 |
 April 8, 2024 |
 January 26, 2028 |
 November 14, 2031 |
 September 2, 2035 |
| 147 | 149 | 151 | 153 | 155 |
 June 21, 2039 |
 April 9, 2043 |
 January 26, 2047 |
 November 14, 2050 |
 September 2, 2054 |
| 157 | ||||
 June 21, 2058 | ||||
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