An annular solar eclipse occurred at the Moon's descending node of orbit on Sunday, September 11, 1988, with a magnitude of 0.9377. 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 in southeastern Somalia (including the capital city Mogadishu), the Indian Ocean and Macquarie Island of Australia.
| Solar eclipse of September 11, 1988 | |
|---|---|
 Map | |
| Type of eclipse | |
| Nature | Annular |
| Gamma | −0.4681 |
| Magnitude | 0.9377 |
| Maximum eclipse | |
| Duration | 417 s (6 min 57 s) |
| Coordinates | 20°00′S 94°24′E / 20°S 94.4°E |
| Max. width of band | 258 km (160 mi) |
| Times (UTC) | |
| Greatest eclipse | 4:44:29 |
| References | |
| Saros | 144 (15 of 70) |
| Catalog # (SE5000) | 9483 |
Related eclipses
editEclipses in 1988
edit- A penumbral lunar eclipse on March 3, 1988.
- A total solar eclipse on March 18, 1988.
- A partial lunar eclipse on August 27, 1988.
- An annular solar eclipse on September 11, 1988.
Metonic
edit- Preceded by: Solar eclipse of November 22, 1984
- Followed by: Solar eclipse of June 30, 1992
Tzolkinex
edit- Preceded by: Solar eclipse of July 31, 1981
- Followed by: Solar eclipse of October 24, 1995
Half-Saros
edit- Preceded by: Lunar eclipse of September 6, 1979
- Followed by: Lunar eclipse of September 16, 1997
Tritos
edit- Preceded by: Solar eclipse of October 12, 1977
- Followed by: Solar eclipse of August 11, 1999
Solar Saros 144
edit- Preceded by: Solar eclipse of August 31, 1970
- Followed by: Solar eclipse of September 22, 2006
Inex
edit- Preceded by: Solar eclipse of October 2, 1959
- Followed by: Solar eclipse of August 21, 2017
Triad
edit- Preceded by: Solar eclipse of November 11, 1901
- Followed by: Solar eclipse of July 13, 2075
Solar eclipses of 1986–1989
editThis 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 144
editThis eclipse is a part of Saros series 144, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on April 11, 1736. It contains annular eclipses from July 7, 1880 through August 27, 2565. There are no hybrid or total eclipses in this set. The series ends at member 70 as a partial eclipse on May 5, 2980. 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 51 at 9 minutes, 52 seconds on December 29, 2168. All eclipses in this series occur at the Moon’s descending node of orbit.[2]
| Series members 5–26 occur between 1801 and 2200: | ||
|---|---|---|
| 5 | 6 | 7 |
| May 25, 1808 |
June 5, 1826 |
June 16, 1844 |
| 8 | 9 | 10 |
| June 27, 1862 |
July 7, 1880 |
July 18, 1898 |
| 11 | 12 | 13 |
| July 30, 1916 |
August 10, 1934 |
August 20, 1952 |
| 14 | 15 | 16 |
| August 31, 1970 |
September 11, 1988 |
September 22, 2006 |
| 17 | 18 | 19 |
| October 2, 2024 |
October 14, 2042 |
October 24, 2060 |
| 20 | 21 | 22 |
| November 4, 2078 |
November 15, 2096 |
November 27, 2114 |
| 23 | 24 | 25 |
| December 7, 2132 |
December 19, 2150 |
December 29, 2168 |
| 26 | ||
| January 9, 2187 | ||
Inex series
editThis eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
| Inex series members between 1901 and 2100: | ||
|---|---|---|
| November 11, 1901 (Saros 141) |
October 21, 1930 (Saros 142) |
October 2, 1959 (Saros 143) |
| September 11, 1988 (Saros 144) |
August 21, 2017 (Saros 145) |
August 2, 2046 (Saros 146) |
| July 13, 2075 (Saros 147) |
||
Metonic series
editThe 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 descending node.
| 22 eclipse events between September 12, 1931 and July 1, 2011. | ||||
|---|---|---|---|---|
| September 11-12 | June 30-July 1 | April 17-19 | February 4-5 | November 22-23 |
| 114 | 116 | 118 | 120 | 122 |
| September 12, 1931 |
June 30, 1935 |
April 19, 1939 |
February 4, 1943 |
November 23, 1946 |
| 124 | 126 | 128 | 130 | 132 |
| September 12, 1950 |
June 30, 1954 |
April 19, 1958 |
February 5, 1962 |
November 23, 1965 |
| 134 | 136 | 138 | 140 | 142 |
| September 11, 1969 |
June 30, 1973 |
April 18, 1977 |
February 4, 1981 |
November 22, 1984 |
| 144 | 146 | 148 | 150 | 152 |
| September 11, 1988 |
June 30, 1992 |
April 17, 1996 |
February 5, 2000 |
November 23, 2003 |
| 154 | 156 | |||
| September 11, 2007 |
July 1, 2011 | |||
Notes
edit- ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
- ^ "NASA - Catalog of Solar Eclipses of Saros 144". eclipse.gsfc.nasa.gov.
References
edit- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
