Solar eclipse of July 11, 2010 | |
---|---|
Type of eclipse | |
Nature | Total |
Gamma | -0.6788 |
Magnitude | 1.058 |
Maximum eclipse | |
Duration | 320 sec (5 m 20 s) |
Coordinates | 19°42′S121°54′W / 19.7°S 121.9°W |
Max. width of band | 259 km (161 mi) |
Times (UTC) | |
(P1) Partial begin | 17:09:41 |
(U1) Total begin | 18:15:15 |
Greatest eclipse | 19:34:38 |
(U4) Total end | 20:51:42 |
(P4) Partial end | 21:57:16 |
References | |
Saros | 146 (27 of 76) |
Catalog # (SE5000) | 9530 |
The total solar eclipse of July 11, 2010, occurred over the southern Pacific Ocean. [1] 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. This eclipse was on the same day as the 2010 FIFA World Cup Final.
The exact time of the greatest eclipse took place on Sunday, July 11, 2010, at 07:33:31.7 p.m. UTC, but occurring only 1.7 days before perigee (Perigee on Tuesday, July 13, 2010, at 11:21 a.m. UTC), the Moon's apparent diameter was 4.5% larger than average, and the Moon's distance from the Earth was 363,354 km (225,778 mi).
The eclipse on this day was one of the most remote in recorded history. It was visible over much of the southern Pacific Ocean, touching several atolls in French Polynesia, the Cook Islands, Easter Island, and Argentina's Patagonian plains. [2]
Fred Espenak, a NASA astrophysicist, said:
"One of the most unique things about this particular eclipse is that it crosses a unique and interesting archaeological site: Easter Island. On Easter Island there are these great statues... There's a lot of mystery about these statues, but in any case, this is the first total eclipse to hit the island in about 1,400 years." [3]
In French Polynesia, the eclipse was seen with 98 percent totality. During that time, the diamond ring effect and the Baily's beads occurred.
It ended at sunset over the southern tips of Argentina and Chile in South America, including the town of El Calafate. The Sun's altitude was only 1° during the 2 minute 47 second total phase, but Argentino Lake offered an adequate line-of-sight to the eclipse hanging just above the rugged Andes skyline. [1]
A 58% partiality occurred at sunset in Santiago, Chile, but it was not visible due to adverse weather conditions. In other cities such as Valparaíso and Coquimbo, clearer skies permitted the event to be witnessed in continental Chile.
Total eclipse began 750 kilometers (470 mi) southeast of Tonga at approximately 18:15 UTC and reached Easter Island by 20:11 UTC. [4] The global sky photography project The World At Night stationed photographers throughout the eclipse's visibility track. Eclipse chasers photographed the event on board a chartered airplane, [5] cruise ships, numerous Pacific islands, and in Argentina's Patagonia region. Totality was observed for four minutes and 41 seconds (4:41) on Easter Island, [2] where it was observed for the first time in 1,400 years. [6] Approximately 4,000 observers visited Easter Island for this eclipse, including tourists, scientists, photographers, filmmakers and journalists, [7] prompting an increase in security at its important moai archeological sites. The eclipse occurred at the same time that the final game of the 2010 FIFA World Cup was being played in South Africa, and many soccer fans in Tahiti watched the match instead of observing the partial eclipse with a high percentage of obscuring the sun by over 98%. [4] [8] The path of totality of this eclipse barely missed some significant inhabited islands, including passing just about 20 km north of the northern end of Tahiti.[ citation needed ]
This eclipse was the first one to happen over French Polynesia in 350 years. An estimated 5,000 tourists visited various islands in the archipelago to observe the event. Nearly 120,000 pairs of special glasses were distributed for observers. [9] Eclipse chasers were also able to observe the eclipse at El Calafate, near the southern tip of Argentina, before the sun set just two minutes later. [2]
Several hours after the eclipse was observed in continental Chile, a magnitude 6.2 earthquake struck in the Antofagasta Region. There were no major injuries or damage in the nearby cities of Calama, Chile and San Pedro de Atacama. [10]
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. [11]
Ascending node | Descending node | |||||
---|---|---|---|---|---|---|
Saros | Map | Gamma | Saros | Map | Gamma | |
121 Partial from Christchurch, NZ | 2008 February 07 Annular | -0.95701 | 126 Novosibirsk, Russia | 2008 August 01 Total | 0.83070 | |
131 Partial from Riversdal | 2009 January 26 Annular | -0.28197 | 136 Kurigram, Bangladesh | 2009 July 22 Total | 0.06977 | |
141 Bangui, Central African Republic | 2010 January 15 Annular | 0.40016 | 146 Hao, French Polynesia | 2010 July 11 Total | -0.67877 | |
151 Partial from Vienna, Austria | 2011 January 04 Partial (north) | 1.06265 | 156 | 2011 July 01 Partial (south) | -1.49171 |
Partial solar eclipses on June 1, 2011, and November 25, 2011, occur on the next lunar year eclipse set.
It is a part of Saros cycle 146, repeating every 18 years, 11 days, containing 76 events. The series started with 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 December 1, 2244, through August 10, 2659. The series ends at member 76 as a partial eclipse on December 29, 2893. The longest duration of totality was 5 minutes, 21 seconds on June 30, 1992.
Series members 21-37 occur between 1901 and 2200: | ||
---|---|---|
21 | 22 | 23 |
May 7, 1902 | May 18, 1920 | May 29, 1938 |
24 | 25 | 26 |
June 8, 1956 | June 20, 1974 | June 30, 1992 |
27 | 28 | 29 |
July 11, 2010 | July 22, 2028 | August 2, 2046 |
30 | 31 | 32 |
August 12, 2064 | August 24, 2082 | September 4, 2100 |
33 | 34 | 35 |
September 15, 2118 | September 26, 2136 | October 7, 2154 |
36 | 37 | |
October 17, 2172 | 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.
21 eclipse events, progressing from north to south between July 11, 1953 and July 11, 2029 | ||||
---|---|---|---|---|
July 10–12 | April 29–30 | February 15–16 | December 4–5 | September 21–23 |
116 | 118 | 120 | 122 | 124 |
July 11, 1953 | April 30, 1957 | February 15, 1961 | December 4, 1964 | September 22, 1968 |
126 | 128 | 130 | 132 | 134 |
July 10, 1972 | April 29, 1976 | February 16, 1980 | December 4, 1983 | September 23, 1987 |
136 | 138 | 140 | 142 | 144 |
July 11, 1991 | April 29, 1995 | February 16, 1999 | December 4, 2002 | September 22, 2006 |
146 | 148 | 150 | 152 | 154 |
July 11, 2010 | April 29, 2014 | February 15, 2018 | December 4, 2021 | September 21, 2025 |
156 | 158 | 160 | 162 | 164 |
July 11, 2029 |
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