title: Solar eclipse of October 4, 2089
text: # Solar eclipse of October 4, 2089
  
  A total solar eclipse will occur on October 4, 2089. 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. The tables below contain detailed predictions and additional information on the Total Solar Eclipse of 4 October 2089.
  
  Gregorian Calendar: October 4, 2089
  
  Julian Calendar: September 21, 2089
  
  Saros: 145 (26/77)
  
  Node: Ascending
  
  Greatest Eclipse: 2089 October 04 at 01:13:26.4 UTC
  
  Eclipse Magnitude: 1.03333
  
  Eclipse Obscuration: 1.06777
  
  Gamma: 0.21671
  
  Ecliptic Conjunction: 2089 October 04 at 01:15:43.6 UTC
  
  Equatorial Conjunction: 2089 October 04 at 01:06:16.2 UTC
  
  Sun Right Ascension: 12h42m34.2s
  
  Sun Declination: -04º34'29.0"
  
  Sun Diameter: 1918.2 arcseconds
  
  Sun Equatorial Horizontal Parallax: 0º00'08.8"
  
  Moon Right Ascension: 12h42m49.6s
  
  Moon Declination: -04º22'10.5"
  
  Moon Diameter: 1950.0 arcseconds
  
  Moon Equatorial Horizontal Parallax: 0º59'38.5"
  
  Delta T: 1 minute, 56.8 seconds
  
  ## Related eclipses
  
  ### Solar eclipses 2087–2090
  
  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.
  
  | 120 | May 2, 2087 Partial | 125 | October 26, 2087 Partial |
  | - | - | - | - |
  | 130 | April 21, 2088 Total | 135 | October 14, 2088 Annular |
  | 140 | April 10, 2089 Annular | 145 | October 4, 2089 Total |
  | 150 | March 31, 2090 Partial | 155 | September 23, 2090 Total |
  
  ### Saros series 145
  
  This solar eclipse is a part of Saros cycle 145, repeating every 18 years, 11 days, 8 hours, containing 77 events. The series started with a partial solar eclipse on January 4, 1639, and reached a first annular eclipse on June 6, 1891. It was a hybrid event on June 17, 1909, and total eclipses from June 29, 1927, through September 9, 2648. The series ends at member 77 as a partial eclipse on April 17, 3009. The longest eclipse will occur on June 25, 2522, with a maximum duration of totality of 7 minutes, 12 seconds. All eclipses in this series occurs at the Moon's ascending node.
  
  Series members 10–32 occur between 1801 and 2359 :
  
  | 10 | 11 | 12 |
  | - | - | - |
  | April 13, 1801 | April 24, 1819 | May 4, 1837 |
  | 13 | 14 | 15 |
  | May 16, 1855 | May 26, 1873 | June 6, 1891 |
  | 16 | 17 | 18 |
  | June 17, 1909 | June 29, 1927 | July 9, 1945 |
  | 19 | 20 | 21 |
  | July 20, 1963 | July 31, 1981 | August 11, 1999 |
  | 22 | 23 | 24 |
  | August 21, 2017 | September 2, 2035 | September 12, 2053 |
  | 25 | 26 | 27 |
  | September 23, 2071 | October 4, 2089 | October 16, 2107 |
  | 28 | 29 | 30 |
  | October 26, 2125 | November 7, 2143 | November 17, 2161 |
  | 31 | 32 | 33 |
  | November 28, 2179 | December 9, 2197 | December 21, 2215 |
  | 34 | 35 | 36 |
  | December 31, 2233 | January 12, 2252 | January 22, 2270 |
  | 37 | 38 | 39 |
  | February 2, 2288 | February 14, 2306 | February 25, 2324 |
  | 40 |
  | March 8, 2342 |
  
  ### 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 2100 :
  
  | December 21, 1805 (Saros 119) | November 19, 1816 (Saros 120) | October 20, 1827 (Saros 121) |
  | - | - | - |
  | September 18, 1838 (Saros 122) | August 18, 1849 (Saros 123) | July 18, 1860 (Saros 124) |
  | June 18, 1871 (Saros 125) | May 17, 1882 (Saros 126) | April 16, 1893 (Saros 127) |
  | March 17, 1904 (Saros 128) | February 14, 1915 (Saros 129) | January 14, 1926 (Saros 130) |
  | December 13, 1936 (Saros 131) | November 12, 1947 (Saros 132) | October 12, 1958 (Saros 133) |
  | September 11, 1969 (Saros 134) | August 10, 1980 (Saros 135) | July 11, 1991 (Saros 136) |
  | June 10, 2002 (Saros 137) | May 10, 2013 (Saros 138) | April 8, 2024 (Saros 139) |
  | March 9, 2035 (Saros 140) | February 5, 2046 (Saros 141) | January 5, 2057 (Saros 142) |
  | December 6, 2067 (Saros 143) | November 4, 2078 (Saros 144) | October 4, 2089 (Saros 145) |
  | September 4, 2100 (Saros 146) | |
  
  In the 22nd century:
  
  * Solar saros 147: annular solar eclipse of August 4, 2111
  * Solar saros 148: total solar eclipse of July 4, 2122
  * Solar saros 149: total solar eclipse of June 3, 2133
  * Solar saros 150: annular solar eclipse of May 3, 2144
  * Solar saros 151: annular solar eclipse of April 2, 2155
  * Solar saros 152: total solar eclipse of March 2, 2166
  * Solar saros 153: annular solar eclipse of January 29, 2177
  * Solar saros 154: annular solar eclipse of December 29, 2187
  * Solar saros 155: total solar eclipse of November 28, 2198
  
  In the 23rd century:
  
  * Solar saros 156: annular solar eclipse of October 29, 2209
  * Solar saros 157: annular solar eclipse of September 27, 2220
  * Solar saros 158: total solar eclipse of August 28, 2231
  * Solar saros 159: partial solar eclipse of July 28, 2242
  * Solar saros 160: partial solar eclipse of June 26, 2253
  * Solar saros 161: partial solar eclipse of May 26, 2264
  * Solar saros 162: partial solar eclipse of April 26, 2275
  * Solar saros 163: partial solar eclipse of March 25, 2286
  * Solar saros 164: partial solar eclipse of February 22, 2297
  