Solar eclipse of September 11, 1988
# Solar eclipse of September 11, 1988

An annular solar eclipse occurred on September 11, 1988. 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.

## Related eclipses

### Eclipses of 1988

* A penumbral lunar eclipse on March 3.
* A total solar eclipse on March 18.
* A partial lunar eclipse on August 27.
* An annular solar eclipse on September 11.

### Solar eclipses of 1986–1989

There were 8 solar eclipses between April 9, 1986 and August 31, 1989.

Solar eclipse series sets from 1986–1989 :

| Ascending node | Ascending node | Ascending node | Descending node | Descending node | Descending node |
| - | - | - | - | - | - |
| Saros | Map | Gamma | Saros | Map | Gamma |
| 119 | 1986 April 9 Partial | -1.08215 | 124 | 1986 October 3 Hybrid | 0.99305 |
| 129 | 1987 March 29 Hybrid | -0.30531 | 134 | 1987 September 23 Annular | 0.27869 |
| 139 | 1988 March 18 Total | 0.41879 | 144 | 1988 September 11 Annular | -0.46811 |
| 149 | 1989 March 7 Partial | 1.09815 | 154 | 1989 August 31 Partial | -1.19279 |

### 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.

Series members 11–21 occur between 1901 and 2100: :

| 11 | 12 | 13 |
| - | - | - |
| Jul 30, 1916 | Aug 10, 1934 | Aug 20, 1952 |
| 14 | 15 | 16 |
| Aug 31, 1970 | Sep 11, 1988 | Sep 22, 2006 |
| 17 | 18 | 19 |
| Oct 2, 2024 | Oct 14, 2042 | Oct 24, 2060 |
| 20 | 21 |
| Nov 4, 2078 | Nov 15, 2096 |

### Inex series

This 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

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 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 |
