# Solar eclipse of November 12, 1985

A total solar eclipse occurred at the Moon's descending node of orbit on Tuesday, November 12, 1985, with a magnitude of 1.0388. 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 total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Occurring about 2 hours after perigee (on November 12, 1985, at 12:30 UTC), the Moon's apparent diameter was larger. Perigee did occur during the early portion of the eclipse.
Totality was visible only near Antarctica. A partial eclipse was visible for parts of southern South America and Antarctica.

## 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.
November 12, 1985 Solar Eclipse Times :
| Event | Time (UTC) |
| First Penumbral External Contact | 1985 November 12 at 12:09:38.7 UTC |
| First Umbral External Contact | 1985 November 12 at 13:47:16.4 UTC |
| First Central Line | 1985 November 12 at 13:51:51.3 UTC |
| First Umbral Internal Contact | 1985 November 12 at 13:57:51.7 UTC |
| Greatest Duration | 1985 November 12 at 14:11:16.8 UTC |
| Greatest Eclipse | 1985 November 12 at 14:11:26.9 UTC |
| Ecliptic Conjunction | 1985 November 12 at 14:21:15.4 UTC |
| Equatorial Conjunction | 1985 November 12 at 14:50:17.6 UTC |
| Last Umbral Internal Contact | 1985 November 12 at 14:24:37.2 UTC |
| Last Central Line | 1985 November 12 at 14:30:37.7 UTC |
| Last Umbral External Contact | 1985 November 12 at 14:35:12.6 UTC |
| Last Penumbral External Contact | 1985 November 12 at 16:12:59.3 UTC |
November 12, 1985 Solar Eclipse Parameters :
| Parameter | Value |
| Eclipse Magnitude | 1.03880 |
| Eclipse Obscuration | 1.07910 |
| Gamma | −0.97948 |
| Sun Right Ascension | 15h10m46.7s |
| Sun Declination | -17°46'51.7" |
| Sun Semi-Diameter | 16'09.6" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 15h09m15.4s |
| Moon Declination | -18°42'51.3" |
| Moon Semi-Diameter | 16'44.5" |
| Moon Equatorial Horizontal Parallax | 1°01'26.6" |
| ΔT | 54.8 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 October–November 1985 :
| October 28 Ascending node (full moon) | November 12 Descending node (new moon) |
| Total lunar eclipse Lunar Saros 126 | Total solar eclipse Solar Saros 152 |

## Related eclipses
### Eclipses in 1985

* A total lunar eclipse on May 4.
* A partial solar eclipse on May 19.
* A total lunar eclipse on October 28.
* A total solar eclipse on November 12.

### Metonic

* Preceded by: Solar eclipse of January 25, 1982
* Followed by: Solar eclipse of August 31, 1989

### Tzolkinex

* Preceded by: Solar eclipse of October 2, 1978
* Followed by: Solar eclipse of December 24, 1992

### Half-Saros

* Preceded by: Lunar eclipse of November 6, 1976
* Followed by: Lunar eclipse of November 18, 1994

### Tritos

* Preceded by: Solar eclipse of December 13, 1974
* Followed by: Solar eclipse of October 12, 1996

### Solar Saros 152

* Preceded by: Solar eclipse of November 2, 1967
* Followed by: Solar eclipse of November 23, 2003

### Inex

* Preceded by: Solar eclipse of December 2, 1956
* Followed by: Solar eclipse of October 23, 2014

### Triad

* Preceded by: Solar eclipse of January 11, 1899
* Followed by: Solar eclipse of September 12, 2072

### Solar eclipses of 1982–1985

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.
The partial solar eclipses on January 25, 1982 and July 20, 1982 occur in the previous lunar year eclipse set.
Solar eclipse series sets from 1982 to 1985 :
| Ascending node | Ascending node | Ascending node | Descending node | Descending node | Descending node |
| Saros | Map | Gamma | Saros | Map | Gamma |
| 117 | June 21, 1982 Partial | −1.2102 | 122 | December 15, 1982 Partial | 1.1293 |
| 127 | June 11, 1983 Total | −0.4947 | 132 | December 4, 1983 Annular | 0.4015 |
| 137 | May 30, 1984 Annular | 0.2755 | 142 Partial in Gisborne, New Zealand | November 22, 1984 Total | −0.3132 |
| 147 | May 19, 1985 Partial | 1.072 | 152 | November 12, 1985 Total | −0.9795 |

### Saros 152

This eclipse is a part of Saros series 152, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on July 26, 1805. It contains total eclipses from November 2, 1967 through September 14, 2490; hybrid eclipses from September 26, 2508 through October 17, 2544; and annular eclipses from October 29, 2562 through June 16, 2941. The series ends at member 70 as a partial eclipse on August 20, 3049. 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 30 at 5 minutes, 16 seconds on June 9, 2328, and the longest duration of annularity will be produced by member 53 at 5 minutes, 20 seconds on February 16, 2743. All eclipses in this series occur at the Moon’s descending node of orbit.
Series members 1–22 occur between 1805 and 2200: :
| 1 | 2 | 3 |
| July 26, 1805 | August 6, 1823 | August 16, 1841 |
| 4 | 5 | 6 |
| August 28, 1859 | September 7, 1877 | September 18, 1895 |
| 7 | 8 | 9 |
| September 30, 1913 | October 11, 1931 | October 21, 1949 |
| 10 | 11 | 12 |
| November 2, 1967 | November 12, 1985 | November 23, 2003 |
| 13 | 14 | 15 |
| December 4, 2021 | December 15, 2039 | December 26, 2057 |
| 16 | 17 | 18 |
| January 6, 2076 | January 16, 2094 | January 29, 2112 |
| 19 | 20 | 21 |
| February 8, 2130 | February 19, 2148 | March 2, 2166 |
| 22 |
| March 12, 2184 |

### 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 April 8, 1902 and August 31, 1989 :
| April 7–8 | January 24–25 | November 12 | August 31–September 1 | June 19–20 |
| 108 | 110 | 112 | 114 | 116 |
| April 8, 1902 | | | August 31, 1913 | June 19, 1917 |
| 118 | 120 | 122 | 124 | 126 |
| April 8, 1921 | January 24, 1925 | November 12, 1928 | August 31, 1932 | June 19, 1936 |
| 128 | 130 | 132 | 134 | 136 |
| April 7, 1940 | January 25, 1944 | November 12, 1947 | September 1, 1951 | June 20, 1955 |
| 138 | 140 | 142 | 144 | 146 |
| April 8, 1959 | January 25, 1963 | November 12, 1966 | August 31, 1970 | June 20, 1974 |
| 148 | 150 | 152 | 154 |
| April 7, 1978 | January 25, 1982 | November 12, 1985 | August 31, 1989 |

### 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.
The partial solar eclipse on November 4, 2116 (part of Saros 164) is also a part of this series but is not included in the table below.
Series members between 1801 and 2029 :
| March 24, 1811 (Saros 136) | February 21, 1822 (Saros 137) | January 20, 1833 (Saros 138) | December 21, 1843 (Saros 139) | November 20, 1854 (Saros 140) |
| October 19, 1865 (Saros 141) | September 17, 1876 (Saros 142) | August 19, 1887 (Saros 143) | July 18, 1898 (Saros 144) | June 17, 1909 (Saros 145) |
| May 18, 1920 (Saros 146) | April 18, 1931 (Saros 147) | March 16, 1942 (Saros 148) | February 14, 1953 (Saros 149) | January 14, 1964 (Saros 150) |
| December 13, 1974 (Saros 151) | November 12, 1985 (Saros 152) | October 12, 1996 (Saros 153) | September 11, 2007 (Saros 154) | August 11, 2018 (Saros 155) |
| July 11, 2029 (Saros 156) |

### 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 :
| March 13, 1812 (Saros 146) | February 21, 1841 (Saros 147) | January 31, 1870 (Saros 148) |
| January 11, 1899 (Saros 149) | December 24, 1927 (Saros 150) | December 2, 1956 (Saros 151) |
| November 12, 1985 (Saros 152) | October 23, 2014 (Saros 153) | October 3, 2043 (Saros 154) |
| September 12, 2072 (Saros 155) | August 24, 2101 (Saros 156) | August 4, 2130 (Saros 157) |
| July 15, 2159 (Saros 158) | June 24, 2188 (Saros 159) | |