# Solar eclipse of January 3, 1927

An annular solar eclipse occurred at the Moon's descending node of orbit between Monday, January 3 and Tuesday, January 4, 1927, with a magnitude of 0.9995. 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. The Moon's apparent diameter was near the average diameter because it occurred 8.6 days after apogee (on December 26, 1926, at 7:10 UTC) and 3.3 days before perigee (on January 7, 1927, at 3:00 UTC).
Annularity was visible from New Zealand on January 4 (Tuesday), and Chile, Argentina, Uruguay and southern Brazil on January 3 (Monday). A partial eclipse was visible for parts of Oceania, Antarctica, and South America.

## Observations

View of the eclipse from Buenos Aires

## 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.
January 3, 1927 Solar Eclipse Times :
| Event | Time (UTC) |
| First Penumbral External Contact | 1927 January 03 at 17:44:12.4 UTC |
| First Umbral External Contact | 1927 January 03 at 18:48:36.9 UTC |
| First Central Line | 1927 January 03 at 18:49:09.7 UTC |
| Greatest Duration | 1927 January 03 at 18:49:09.7 UTC |
| First Umbral Internal Contact | 1927 January 03 at 18:49:42.5 UTC |
| Greatest Eclipse | 1927 January 03 at 20:22:53.1 UTC |
| Equatorial Conjunction | 1927 January 03 at 20:23:09.7 UTC |
| Ecliptic Conjunction | 1927 January 03 at 20:28:11.0 UTC |
| Last Umbral Internal Contact | 1927 January 03 at 21:56:05.6 UTC |
| Last Central Line | 1927 January 03 at 21:56:35.8 UTC |
| Last Umbral External Contact | 1927 January 03 at 21:57:05.9 UTC |
| Last Penumbral External Contact | 1927 January 03 at 23:01:27.9 UTC |
January 3, 1927 Solar Eclipse Parameters :
| Parameter | Value |
| Eclipse Magnitude | 0.99947 |
| Eclipse Obscuration | 0.99894 |
| Gamma | −0.49559 |
| Sun Right Ascension | 18h54m14.6s |
| Sun Declination | -22°51'45.8" |
| Sun Semi-Diameter | 16'15.9" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 18h54m13.9s |
| Moon Declination | -23°20'50.4" |
| Moon Semi-Diameter | 16'01.7" |
| Moon Equatorial Horizontal Parallax | 0°58'49.4" |
| ΔT | 24.5 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 December 1926–January 1927 :
| December 19 Ascending node (full moon) | January 3 Descending node (new moon) |
| Penumbral lunar eclipse Lunar Saros 114 | Annular solar eclipse Solar Saros 140 |

## Related eclipses
### Eclipses in 1927

* An annular solar eclipse on January 3.
* A total lunar eclipse on June 15.
* A total solar eclipse on June 29.
* A total lunar eclipse on December 8.
* A partial solar eclipse on December 24.

### Metonic

* Preceded by: Solar eclipse of March 17, 1923
* Followed by: Solar eclipse of October 21, 1930

### Tzolkinex

* Preceded by: Solar eclipse of November 22, 1919
* Followed by: Solar eclipse of February 14, 1934

### Half-Saros

* Preceded by: Lunar eclipse of December 28, 1917
* Followed by: Lunar eclipse of January 8, 1936

### Tritos

* Preceded by: Solar eclipse of February 3, 1916
* Followed by: Solar eclipse of December 2, 1937

### Solar Saros 140

* Preceded by: Solar eclipse of December 23, 1908
* Followed by: Solar eclipse of January 14, 1945

### Inex

* Preceded by: Solar eclipse of January 22, 1898
* Followed by: Solar eclipse of December 14, 1955

### Triad

* Preceded by: Solar eclipse of March 4, 1840
* Followed by: Solar eclipse of November 3, 2013

### Solar eclipses of 1924–1928

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 March 5, 1924 and August 30, 1924 occur in the previous lunar year eclipse set, and the solar eclipses on May 19, 1928 and November 12, 1928 occur in the next lunar year eclipse set.
Solar eclipse series sets from 1924 to 1928 :
| Ascending node | Ascending node | Ascending node | Descending node | Descending node | Descending node |
| Saros | Map | Gamma | Saros | Map | Gamma |
| 115 | July 31, 1924 Partial | −1.4459 | 120 | January 24, 1925 Total | 0.8661 |
| 125 | July 20, 1925 Annular | −0.7193 | 130 Totality in Sumatra, Indonesia | January 14, 1926 Total | 0.1973 |
| 135 | July 9, 1926 Annular | 0.0538 | 140 | January 3, 1927 Annular | −0.4956 |
| 145 | June 29, 1927 Total | 0.8163 | 150 | December 24, 1927 Partial | −1.2416 |
| 155 | June 17, 1928 Partial | 1.5107 |

### Saros 140

This eclipse is a part of Saros series 140, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on April 16, 1512. It contains total eclipses from July 21, 1656 through November 9, 1836; hybrid eclipses from November 20, 1854 through December 23, 1908; and annular eclipses from January 3, 1927 through December 7, 2485. The series ends at member 71 as a partial eclipse on June 1, 2774. 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 was produced by member 11 at 4 minutes, 10 seconds on August 12, 1692, and the longest duration of annularity will be produced by member 53 at 7 minutes, 35 seconds on November 15, 2449. All eclipses in this series occur at the Moon’s descending node of orbit.
Series members 18–39 occur between 1801 and 2200: :
| 18 | 19 | 20 |
| October 29, 1818 | November 9, 1836 | November 20, 1854 |
| 21 | 22 | 23 |
| November 30, 1872 | December 12, 1890 | December 23, 1908 |
| 24 | 25 | 26 |
| January 3, 1927 | January 14, 1945 | January 25, 1963 |
| 27 | 28 | 29 |
| February 4, 1981 | February 16, 1999 | February 26, 2017 |
| 30 | 31 | 32 |
| March 9, 2035 | March 20, 2053 | March 31, 2071 |
| 33 | 34 | 35 |
| April 10, 2089 | April 23, 2107 | May 3, 2125 |
| 36 | 37 | 38 |
| May 14, 2143 | May 25, 2161 | June 5, 2179 |
| 39 |
| June 15, 2197 |

### 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 March 16, 1866 and August 9, 1953 :
| March 16–17 | January 1–3 | October 20–22 | August 9–10 | May 27–29 |
| 108 | 110 | 112 | 114 | 116 |
| March 16, 1866 | | | August 9, 1877 | May 27, 1881 |
| 118 | 120 | 122 | 124 | 126 |
| March 16, 1885 | January 1, 1889 | October 20, 1892 | August 9, 1896 | May 28, 1900 |
| 128 | 130 | 132 | 134 | 136 |
| March 17, 1904 | January 3, 1908 | October 22, 1911 | August 10, 1915 | May 29, 1919 |
| 138 | 140 | 142 | 144 | 146 |
| March 17, 1923 | January 3, 1927 | October 21, 1930 | August 10, 1934 | May 29, 1938 |
| 148 | 150 | 152 | 154 |
| March 16, 1942 | January 3, 1946 | October 21, 1949 | August 9, 1953 |

### 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 eclipses on December 18, 2188 (part of Saros 164) and November 18, 2199 (part of Saros 165) are also a part of this series but are not included in the table below.
Series members between 1801 and 2134 :
| December 10, 1806 (Saros 129) | November 9, 1817 (Saros 130) | October 9, 1828 (Saros 131) | September 7, 1839 (Saros 132) | August 7, 1850 (Saros 133) |
| July 8, 1861 (Saros 134) | June 6, 1872 (Saros 135) | May 6, 1883 (Saros 136) | April 6, 1894 (Saros 137) | March 6, 1905 (Saros 138) |
| February 3, 1916 (Saros 139) | January 3, 1927 (Saros 140) | December 2, 1937 (Saros 141) | November 1, 1948 (Saros 142) | October 2, 1959 (Saros 143) |
| August 31, 1970 (Saros 144) | July 31, 1981 (Saros 145) | June 30, 1992 (Saros 146) | May 31, 2003 (Saros 147) | April 29, 2014 (Saros 148) |
| March 29, 2025 (Saros 149) | February 27, 2036 (Saros 150) | January 26, 2047 (Saros 151) | December 26, 2057 (Saros 152) | November 24, 2068 (Saros 153) |
| October 24, 2079 (Saros 154) | September 23, 2090 (Saros 155) | August 24, 2101 (Saros 156) | July 23, 2112 (Saros 157) | June 23, 2123 (Saros 158) |
| May 23, 2134 (Saros 159) |

### 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 24, 1811 (Saros 136) | March 4, 1840 (Saros 137) | February 11, 1869 (Saros 138) |
| January 22, 1898 (Saros 139) | January 3, 1927 (Saros 140) | December 14, 1955 (Saros 141) |
| November 22, 1984 (Saros 142) | November 3, 2013 (Saros 143) | October 14, 2042 (Saros 144) |
| September 23, 2071 (Saros 145) | September 4, 2100 (Saros 146) | August 15, 2129 (Saros 147) |
| July 25, 2158 (Saros 148) | July 6, 2187 (Saros 149) | |