# Solar eclipse of March 7, 1989

A partial solar eclipse occurred at the Moon's ascending node of orbit on Tuesday, March 7, 1989, with a magnitude of 0.8268. 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.
A partial eclipse was visible for parts of Hawaii, Alaska, Canada, the western and central United States, northwest Mexico, and Greenland.

## Eclipse details

Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.
March 7, 1989 Solar Eclipse Times :
| Event | Time (UTC) |
| First Penumbral External Contact | 1989 March 07 at 16:17:48.4 UTC |
| Greatest Eclipse | 1989 March 07 at 18:08:40.6 UTC |
| Ecliptic Conjunction | 1989 March 07 at 18:19:36.5 UTC |
| Equatorial Conjunction | 1989 March 07 at 19:09:59.8 UTC |
| Last Penumbral External Contact | 1989 March 07 at 19:59:06.7 UTC |
March 7, 1989 Solar Eclipse Parameters :
| Parameter | Value |
| Eclipse Magnitude | 0.82679 |
| Eclipse Obscuration | 0.78906 |
| Gamma | 1.09815 |
| Sun Right Ascension | 23h12m43.3s |
| Sun Declination | -05°04'32.2" |
| Sun Semi-Diameter | 16'06.8" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 23h10m35.2s |
| Moon Declination | -04°05'29.6" |
| Moon Semi-Diameter | 16'41.7" |
| Moon Equatorial Horizontal Parallax | 1°01'16.5" |
| ΔT | 56.4 s |

## Eclipse season

This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight.
Eclipse season of February–March 1989 :
| February 20 Descending node (full moon) | March 7 Ascending node (new moon) |
| Total lunar eclipse Lunar Saros 123 | Partial solar eclipse Solar Saros 149 |

## Related eclipses
### Eclipses in 1989

* A total lunar eclipse on February 20.
* A partial solar eclipse on March 7.
* A total lunar eclipse on August 17.
* A partial solar eclipse on August 31.

### Metonic

* Preceded by: Solar eclipse of May 19, 1985
* Followed by: Solar eclipse of December 24, 1992

### Tzolkinex

* Preceded by: Solar eclipse of January 25, 1982
* Followed by: Solar eclipse of April 17, 1996

### Half-Saros

* Preceded by: Lunar eclipse of March 1, 1980
* Followed by: Lunar eclipse of March 13, 1998

### Tritos

* Preceded by: Solar eclipse of April 7, 1978
* Followed by: Solar eclipse of February 5, 2000

### Solar Saros 149

* Preceded by: Solar eclipse of February 25, 1971
* Followed by: Solar eclipse of March 19, 2007

### Inex

* Preceded by: Solar eclipse of March 27, 1960
* Followed by: Solar eclipse of February 15, 2018

### Triad

* Preceded by: Solar eclipse of May 7, 1902
* Followed by: Solar eclipse of January 6, 2076

### Solar eclipses of 1986–1989

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 1986 to 1989 :
| Ascending node | Ascending node | Ascending node | Descending node | Descending 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 149

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.
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 |

### 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 ascending node.
22 eclipse events between December 24, 1916 and July 31, 2000 :
| December 24–25 | October 12 | July 31–August 1 | May 19–20 | March 7 |
| 111 | 113 | 115 | 117 | 119 |
| December 24, 1916 | | July 31, 1924 | May 19, 1928 | March 7, 1932 |
| 121 | 123 | 125 | 127 | 129 |
| December 25, 1935 | October 12, 1939 | August 1, 1943 | May 20, 1947 | March 7, 1951 |
| 131 | 133 | 135 | 137 | 139 |
| December 25, 1954 | October 12, 1958 | July 31, 1962 | May 20, 1966 | March 7, 1970 |
| 141 | 143 | 145 | 147 | 149 |
| December 24, 1973 | October 12, 1977 | July 31, 1981 | May 19, 1985 | March 7, 1989 |
| 151 | 153 | 155 |
| December 24, 1992 | October 12, 1996 | July 31, 2000 |

### 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.
Series members between 1801 and 2087 :
| August 17, 1803 (Saros 132) | July 17, 1814 (Saros 133) | June 16, 1825 (Saros 134) | May 15, 1836 (Saros 135) | April 15, 1847 (Saros 136) |
| March 15, 1858 (Saros 137) | February 11, 1869 (Saros 138) | January 11, 1880 (Saros 139) | December 12, 1890 (Saros 140) | November 11, 1901 (Saros 141) |
| October 10, 1912 (Saros 142) | September 10, 1923 (Saros 143) | August 10, 1934 (Saros 144) | July 9, 1945 (Saros 145) | June 8, 1956 (Saros 146) |
| May 9, 1967 (Saros 147) | April 7, 1978 (Saros 148) | March 7, 1989 (Saros 149) | February 5, 2000 (Saros 150) | January 4, 2011 (Saros 151) |
| December 4, 2021 (Saros 152) | November 3, 2032 (Saros 153) | October 3, 2043 (Saros 154) | September 2, 2054 (Saros 155) | August 2, 2065 (Saros 156) |
| July 1, 2076 (Saros 157) | June 1, 2087 (Saros 158) |

### 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.
Series members between 1801 and 2200 :
| July 6, 1815 (Saros 143) | June 16, 1844 (Saros 144) | May 26, 1873 (Saros 145) |
| May 7, 1902 (Saros 146) | April 18, 1931 (Saros 147) | March 27, 1960 (Saros 148) |
| March 7, 1989 (Saros 149) | February 15, 2018 (Saros 150) | January 26, 2047 (Saros 151) |
| January 6, 2076 (Saros 152) | December 17, 2104 (Saros 153) | November 26, 2133 (Saros 154) |
| November 7, 2162 (Saros 155) | October 18, 2191 (Saros 156) | |