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20th-century partial solar eclipse From Wikipedia, the free encyclopedia
A partial solar eclipse occurred at the Moon's descending node of orbit between Wednesday, May 7 and Thursday, May 8, 1902,[1][2][3][4] with a magnitude of 0.8593. 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 Eastern Oceania.
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.[5]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 1902 May 07 at 20:42:22.9 UTC |
| Equatorial Conjunction | 1902 May 07 at 22:12:11.6 UTC |
| Greatest Eclipse | 1902 May 07 at 22:34:16.0 UTC |
| Ecliptic Conjunction | 1902 May 07 at 22:45:02.7 UTC |
| Last Penumbral External Contact | 1902 May 08 at 00:26:17.3 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.85935 |
| Eclipse Obscuration | 0.83335 |
| Gamma | −1.08306 |
| Sun Right Ascension | 02h55m45.5s |
| Sun Declination | +16°45'05.4" |
| Sun Semi-Diameter | 15'50.6" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 02h56m38.5s |
| Moon Declination | +15°40'22.1" |
| Moon Semi-Diameter | 16'38.0" |
| Moon Equatorial Horizontal Parallax | 1°01'02.8" |
| ΔT | 0.4 s |
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. The first and last eclipse in this sequence is separated by one synodic month.
| April 8 Descending node (new moon) | April 22 Ascending node (full moon) | May 7 Descending node (new moon) |
|---|---|---|
 |  | |
| Partial solar eclipse Solar Saros 108 | Total lunar eclipse Lunar Saros 120 | Partial solar eclipse Solar Saros 146 |
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.[6]
The solar eclipses on January 22, 1898 (total) and July 18, 1898 (annular) occur in the previous lunar year eclipse set, and the partial solar eclipse on April 8, 1902 occurs in the next lunar year eclipse set.
| Solar eclipse series sets from 1898 to 1902 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 111 | December 13, 1898 Partial |
−1.5252 | 116 | June 8, 1899 Partial |
1.2089 | |
| 121 | December 3, 1899 Annular |
−0.9061 | 126.jpg) Totality in Wadesboro, North Carolina |
May 28, 1900 Total |
0.3943 | |
| 131 | November 22, 1900 Annular |
−0.2245 | 136 | May 18, 1901 Total |
−0.3626 | |
| 141 | November 11, 1901 Annular |
0.4758 | 146 | May 7, 1902 Partial |
−1.0831 | |
| 151 | October 31, 1902 Partial |
1.1556 | ||||
This eclipse is a part of Saros series 146, repeating every 18 years, 11 days, and containing 76 events. The series started with a partial solar eclipse on September 19, 1541. It contains total eclipses from May 29, 1938 through October 7, 2154; hybrid eclipses from October 17, 2172 through November 20, 2226; and annular eclipses from November 30, 2244 through August 10, 2659. The series ends at member 76 as a partial eclipse on December 29, 2893. 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 26 at 5 minutes, 21 seconds on June 30, 1992, and the longest duration of annularity will be produced by member 63 at 3 minutes, 30 seconds on August 10, 2659. All eclipses in this series occur at the Moon’s descending node of orbit.[7]
| Series members 16–37 occur between 1801 and 2200: | ||
|---|---|---|
| 16 | 17 | 18 |
 March 13, 1812 |
 March 24, 1830 |
 April 3, 1848 |
| 19 | 20 | 21 |
 April 15, 1866 |
 April 25, 1884 |
May 7, 1902 |
| 22 | 23 | 24 |
 May 18, 1920 |
 May 29, 1938 |
 June 8, 1956 |
| 25 | 26 | 27 |
 June 20, 1974 |
 June 30, 1992 |
 July 11, 2010 |
| 28 | 29 | 30 |
 July 22, 2028 |
 August 2, 2046 |
 August 12, 2064 |
| 31 | 32 | 33 |
 August 24, 2082 |
 September 4, 2100 |
 September 15, 2118 |
| 34 | 35 | 36 |
 September 26, 2136 |
 October 7, 2154 |
 October 17, 2172 |
| 37 | ||
 October 29, 2190 | ||
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 February 23, 1830 and July 19, 1917 | ||||
|---|---|---|---|---|
| February 22–23 | December 11–12 | September 29–30 | July 18–19 | May 6–7 |
| 108 | 110 | 112 | 114 | 116 |
 February 23, 1830 |
 July 18, 1841 |
 May 6, 1845 | ||
| 118 | 120 | 122 | 124 | 126 |
 February 23, 1849 |
 December 11, 1852 |
 September 29, 1856 |
 July 18, 1860 |
 May 6, 1864 |
| 128 | 130 | 132 | 134 | 136 |
 February 23, 1868 |
 December 12, 1871 |
 September 29, 1875 |
 July 19, 1879 |
 May 6, 1883 |
| 138 | 140 | 142 | 144 | 146 |
 February 22, 1887 |
 December 12, 1890 |
 September 29, 1894 |
 July 18, 1898 |
May 7, 1902 |
| 148 | 150 | 152 | 154 | |
 February 23, 1906 |
 December 12, 1909 |
 September 30, 1913 |
 July 19, 1917 | |
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 October 24, 2098 (part of Saros 164) is also a part of this series but is not included in the table below.
| Series members between 1801 and 2011 | ||||
|---|---|---|---|---|
 February 11, 1804 (Saros 137) |
 January 10, 1815 (Saros 138) |
 December 9, 1825 (Saros 139) |
 November 9, 1836 (Saros 140) |
 October 9, 1847 (Saros 141) |
 September 7, 1858 (Saros 142) |
 August 7, 1869 (Saros 143) |
 July 7, 1880 (Saros 144) |
 June 6, 1891 (Saros 145) |
May 7, 1902 (Saros 146) |
 April 6, 1913 (Saros 147) |
 March 5, 1924 (Saros 148) |
 February 3, 1935 (Saros 149) |
 January 3, 1946 (Saros 150) |
 December 2, 1956 (Saros 151) |
 November 2, 1967 (Saros 152) |
 October 2, 1978 (Saros 153) |
 August 31, 1989 (Saros 154) |
 July 31, 2000 (Saros 155) |
 July 1, 2011 (Saros 156) |
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) |
|
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