An annular solar eclipse occurred at the Moon's descending node of orbit on Saturday, August 28, 1802, with a magnitude of 0.9367. 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. Occurring only about 3 hours after apogee (on August 28, 1802, at 4:30 UTC), the Moon's apparent diameter was smaller.[1]
| Solar eclipse of August 28, 1802 | |
|---|---|
 Map | |
| Type of eclipse | |
| Nature | Annular |
| Gamma | 0.7569 |
| Magnitude | 0.9367 |
| Maximum eclipse | |
| Duration | 335 s (5 min 35 s) |
| Coordinates | 51°18′N 105°42′E / 51.3°N 105.7°E |
| Max. width of band | 354 km (220 mi) |
| Times (UTC) | |
| Greatest eclipse | 7:12:00 |
| References | |
| Saros | 122 (46 of 70) |
| Catalog # (SE5000) | 9046 |
The path of annularity was visible from parts of modern-day Greenland, Svalbard, Russia, Mongolia, China, and the Ryukyu Islands. A partial solar eclipse was also visible for parts of Greenland, northern Canada, Europe, Asia, and western Alaska.[2]
Eclipse details
editShown 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.[3]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 1802 August 28 at 04:29:10.1 UTC |
| First Umbral External Contact | 1802 August 28 at 05:51:01.7 UTC |
| First Central Line | 1802 August 28 at 05:54:53.7 UTC |
| First Umbral Internal Contact | 1802 August 28 at 05:58:52.8 UTC |
| Equatorial Conjunction | 1802 August 28 at 06:26:04.0 UTC |
| Ecliptic Conjunction | 1802 August 28 at 07:02:59.7 UTC |
| Greatest Duration | 1802 August 28 at 07:06:10.3 UTC |
| Greatest Eclipse | 1802 August 28 at 07:11:59.6 UTC |
| Last Umbral Internal Contact | 1802 August 28 at 08:25:35.5 UTC |
| Last Central Line | 1802 August 28 at 08:29:33.9 UTC |
| Last Umbral External Contact | 1802 August 28 at 08:33:25.4 UTC |
| Last Penumbral External Contact | 1802 August 28 at 09:55:07.2 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.93666 |
| Eclipse Obscuration | 0.87733 |
| Gamma | 0.75685 |
| Sun Right Ascension | 10h24m22.1s |
| Sun Declination | +09°58'43.3" |
| Sun Semi-Diameter | 15'50.6" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 10h25m37.4s |
| Moon Declination | +10°34'58.3" |
| Moon Semi-Diameter | 14'41.9" |
| Moon Equatorial Horizontal Parallax | 0°53'56.6" |
| ΔT | 12.6 s |
Eclipse season
editThis 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.
| August 28 Descending node (new moon) |
September 11 Ascending node (full moon) |
|---|---|
| Annular solar eclipse Solar Saros 122 |
Partial lunar eclipse Lunar Saros 134 |
Related eclipses
editEclipses in 1802
edit- A total solar eclipse on March 4.
- A partial lunar eclipse on March 19.
- An annular solar eclipse on August 28.
- A partial lunar eclipse on September 11.
Metonic
edit- Preceded by: Solar eclipse of November 8, 1798
- Followed by: Solar eclipse of June 16, 1806
Tzolkinex
edit- Preceded by: Solar eclipse of July 16, 1795
- Followed by: Solar eclipse of October 9, 1809
Half-Saros
edit- Preceded by: Lunar eclipse of August 21, 1793
- Followed by: Lunar eclipse of September 2, 1811
Tritos
edit- Preceded by: Solar eclipse of September 27, 1791
- Followed by: Solar eclipse of July 27, 1813
Solar Saros 122
edit- Preceded by: Solar eclipse of August 16, 1784
- Followed by: Solar eclipse of September 7, 1820
Inex
edit- Preceded by: Solar eclipse of September 16, 1773
- Followed by: Solar eclipse of August 7, 1831
Triad
edit- Preceded by: Solar eclipse of October 27, 1715
- Followed by: Solar eclipse of June 28, 1889
Solar eclipses of 1801–1805
editThis 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.[4]
The partial solar eclipses on April 13, 1801 and October 7, 1801 occur in the previous lunar year eclipse set, and the solar eclipses on January 1, 1805 (partial); June 26, 1805 (partial); and December 21, 1805 (annular) occur in the next lunar year eclipse set.
| Solar eclipse series sets from 1801 to 1805 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 107 | March 14, 1801 Partial |
−1.4434 | 112 | September 8, 1801 Partial |
1.4657 | |
| 117 | March 4, 1802 Total |
−0.6943 | 122 | August 28, 1802 Annular |
0.7569 | |
| 127 | February 21, 1803 Total |
−0.0075 | 132 | August 17, 1803 Annular |
−0.0048 | |
| 137 | February 11, 1804 Hybrid |
0.7053 | 142 | August 5, 1804 Total |
−0.7622 | |
| 147 | January 30, 1805 Partial |
1.4651 | 152 | July 26, 1805 Partial |
−1.4571 | |
Saros 122
editThis eclipse is a part of Saros series 122, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on April 17, 991 AD. It contains total eclipses from July 12, 1135 through August 3, 1171; hybrid eclipses on August 13, 1189 and August 25, 1207; and annular eclipses from September 4, 1225 through October 10, 1874. The series ends at member 70 as a partial eclipse on May 17, 2235. 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 9 at 1 minutes, 25 seconds on July 12, 1135, and the longest duration of annularity was produced by member 50 at 6 minutes, 28 seconds on October 10, 1874. All eclipses in this series occur at the Moon’s descending node of orbit.[5]
| Series members 46–68 occur between 1801 and 2200: | ||
|---|---|---|
| 46 | 47 | 48 |
| August 28, 1802 |
September 7, 1820 |
September 18, 1838 |
| 49 | 50 | 51 |
| September 29, 1856 |
October 10, 1874 |
October 20, 1892 |
| 52 | 53 | 54 |
| November 2, 1910 |
November 12, 1928 |
November 23, 1946 |
| 55 | 56 | 57 |
| December 4, 1964 |
December 15, 1982 |
December 25, 2000 |
| 58 | 59 | 60 |
| January 6, 2019 |
January 16, 2037 |
January 27, 2055 |
| 61 | 62 | 63 |
| February 7, 2073 |
February 18, 2091 |
March 1, 2109 |
| 64 | 65 | 66 |
| March 13, 2127 |
March 23, 2145 |
April 3, 2163 |
| 67 | 68 | |
| April 14, 2181 |
April 25, 2199 | |
Metonic series
editThe 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.
| 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 | ||||
Tritos series
editThis 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 2200 | ||||
|---|---|---|---|---|
| August 28, 1802 (Saros 122) |
July 27, 1813 (Saros 123) |
June 26, 1824 (Saros 124) |
May 27, 1835 (Saros 125) |
April 25, 1846 (Saros 126) |
| March 25, 1857 (Saros 127) |
February 23, 1868 (Saros 128) |
January 22, 1879 (Saros 129) |
December 22, 1889 (Saros 130) |
November 22, 1900 (Saros 131) |
| October 22, 1911 (Saros 132) |
September 21, 1922 (Saros 133) |
August 21, 1933 (Saros 134) |
July 20, 1944 (Saros 135) |
June 20, 1955 (Saros 136) |
| May 20, 1966 (Saros 137) |
April 18, 1977 (Saros 138) |
March 18, 1988 (Saros 139) |
February 16, 1999 (Saros 140) |
January 15, 2010 (Saros 141) |
| December 14, 2020 (Saros 142) |
November 14, 2031 (Saros 143) |
October 14, 2042 (Saros 144) |
September 12, 2053 (Saros 145) |
August 12, 2064 (Saros 146) |
| July 13, 2075 (Saros 147) |
June 11, 2086 (Saros 148) |
May 11, 2097 (Saros 149) |
April 11, 2108 (Saros 150) |
March 11, 2119 (Saros 151) |
| February 8, 2130 (Saros 152) |
January 8, 2141 (Saros 153) |
December 8, 2151 (Saros 154) |
November 7, 2162 (Saros 155) |
October 7, 2173 (Saros 156) |
| September 4, 2184 (Saros 157) |
August 5, 2195 (Saros 158) | |||
Inex series
editThis 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 | ||
|---|---|---|
| August 28, 1802 (Saros 122) |
August 7, 1831 (Saros 123) |
July 18, 1860 (Saros 124) |
| June 28, 1889 (Saros 125) |
June 8, 1918 (Saros 126) |
May 20, 1947 (Saros 127) |
| April 29, 1976 (Saros 128) |
April 8, 2005 (Saros 129) |
March 20, 2034 (Saros 130) |
| February 28, 2063 (Saros 131) |
February 7, 2092 (Saros 132) |
January 19, 2121 (Saros 133) |
| December 30, 2149 (Saros 134) |
December 9, 2178 (Saros 135) |
|
See also
editReferences
edit- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 28 September 2024.
- ^ "Solar eclipse of August 28, 1802". NASA. Retrieved June 15, 2012.
- ^ "Annular Solar Eclipse of 1802 Aug 28". EclipseWise.com. Retrieved 28 September 2024.
- ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
- ^ "NASA - Catalog of Solar Eclipses of Saros 122". eclipse.gsfc.nasa.gov.
