| Partial eclipse | |
 Map | |
| Gamma | −1.2264 |
|---|---|
| Magnitude | 0.5834 |
| Maximum eclipse | |
| Coordinates | 71°48′S89°00′W / 71.8°S 89°W /-71.8; -89 |
| Times (UTC) | |
| Greatest eclipse | 22:49:07 |
| References | |
| Saros | 146 (18 of 76) |
| Catalog # (SE5000) | 9158 |
← March 5, 1848 | |
A partialsolar eclipse occurred at the Moon'sdescending node of orbit between Monday, April 3 and Tuesday, April 4, 1848, with amagnitude of 0.5834. Asolar eclipse occurs when theMoon passes betweenEarth and theSun, 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.
This eclipse was the second of four partial solar eclipses in 1848, with the others occurring on March 5, August 28 and September 27.
The eclipse was visible in thePacific Ocean and included the northeast and northwestern Antarctica especially a part of the west of theAntarctic Peninsula.
The eclipse started at sunrise offshore from Antarctica where the Indian and the Pacific Ocean divide and ended at sunset in the peninsula and offshore fromChile.
It showed about up to 15-30% obscuration in northern Antarctica within the180th meridian, and from 48% to 58% obscuration in the peninsular portion.
10% obscurity in northern Antarctica and 20% at the Antarctic peninsula. The greatest eclipse was at the Antarctic Peninsula at 71.8 S, 89 W at 22:49 UTC (4:49 PM local time).[1]
The subsolar marking was north of the5th parallel north in the Pacific around thePalmyra Atoll.
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.[2]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 1848 April 03 at 21:14:32.9 UTC |
| Equatorial Conjunction | 1848 April 03 at 22:09:39.8 UTC |
| Greatest Eclipse | 1848 April 03 at 22:49:06.4 UTC |
| Ecliptic Conjunction | 1848 April 03 at 23:01:13.0 UTC |
| Last Penumbral External Contact | 1848 April 04 at 00:23:57.4 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.58339 |
| Eclipse Obscuration | 0.49152 |
| Gamma | −1.22641 |
| Sun Right Ascension | 00h52m39.7s |
| Sun Declination | +05°38'38.8" |
| Sun Semi-Diameter | 15'58.8" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 00h54m09.3s |
| Moon Declination | +04°27'04.6" |
| Moon Semi-Diameter | 16'41.7" |
| Moon Equatorial Horizontal Parallax | 1°01'16.4" |
| ΔT | 6.7 s |
This eclipse is part of aneclipse 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 afortnight. The first and last eclipse in this sequence is separated by onesynodic month.
| March 5 Descending node (new moon) | March 19 Ascending node (full moon) | April 3 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 asemester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternatingnodes of the Moon's orbit.[3]
The partial solar eclipses on June 16, 1844 and December 9, 1844 occur in the previous lunar year eclipse set, and the partial solar eclipses on March 5, 1848 and August 28, 1848 occur in the next lunar year eclipse set.
| Solar eclipse series sets from 1844 to 1848 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 111 | November 10, 1844 Partial | −1.4902 | 116 | May 6, 1845 Annular | 0.9945 | |
| 121 | October 30, 1845 Hybrid | −0.8538 | 126 | April 25, 1846 Hybrid | 0.2038 | |
| 131 | October 20, 1846 Annular | −0.1506 | 136 | April 15, 1847 Total | −0.5339 | |
| 141 | October 9, 1847 Annular | 0.5774 | 146 | April 3, 1848 Partial | −1.2264 | |
| 151 | September 27, 1848 Partial | 1.2774 | ||||
This eclipse is a part ofSaros 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 fromMay 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 oneexeligmos 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 onJune 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’sdescending node of orbit.[4]
| 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 | ||
Themetonic 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.
| 24 eclipse events between August 28, 1802 and August 28, 1859 | ||||
|---|---|---|---|---|
| August 27–28 | June 16 | April 3–4 | January 20–21 | November 9 |
| 122 | 124 | 126 | 128 | 130 |
 August 28, 1802 |  June 16, 1806 |  April 4, 1810 |  January 21, 1814 |  November 9, 1817 |
| 132 | 134 | 136 | 138 | 140 |
 August 27, 1821 |  June 16, 1825 |  April 3, 1829 |  January 20, 1833 |  November 9, 1836 |
| 142 | 144 | 146 | 148 | 150 |
 August 27, 1840 |  June 16, 1844 | April 3, 1848 |  January 21, 1852 |  November 9, 1855 |
| 152 | ||||
 August 28, 1859 | ||||
This eclipse is a part of atritos cycle, repeating at alternating nodes every 135synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with theanomalistic 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 1946 | ||||
|---|---|---|---|---|
 August 5, 1804 (Saros 142) |  July 6, 1815 (Saros 143) |  June 5, 1826 (Saros 144) |  May 4, 1837 (Saros 145) | April 3, 1848 (Saros 146) |
 March 4, 1859 (Saros 147) |  January 31, 1870 (Saros 148) |  December 31, 1880 (Saros 149) |  December 1, 1891 (Saros 150) |  October 31, 1902 (Saros 151) |
 September 30, 1913 (Saros 152) |  August 30, 1924 (Saros 153) |  July 30, 1935 (Saros 154) |  June 29, 1946 (Saros 155) | |
This eclipse is a part of the long periodinex cycle, repeating at alternating nodes, every 358synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with theanomalistic 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 | ||
|---|---|---|
April 24, 1819 (Saros 145) | April 3, 1848 (Saros 146) |  March 15, 1877 (Saros 147) |
 February 23, 1906 (Saros 148) |  February 3, 1935 (Saros 149) |  January 14, 1964 (Saros 150) |
 December 24, 1992 (Saros 151) |  December 4, 2021 (Saros 152) |  November 14, 2050 (Saros 153) |
 October 24, 2079 (Saros 154) |  October 5, 2108 (Saros 155) |  September 15, 2137 (Saros 156) |
 August 25, 2166 (Saros 157) |  August 5, 2195 (Saros 158) | |
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