Solar eclipse of July 11, 2010

Total eclipse

Solar eclipse of July 11, 2010

Totality from Hao, French Polynesia

Map

Type of eclipse
Nature| Total
Gamma| −0.6788
Magnitude| 1.058
Maximum eclipse
Duration| 320 s (5 min 20 s)
Coordinates| 19°42′S 121°54′W﻿ / ﻿19.7°S 121.9°W﻿ / -19.7; -121.9
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

A total solar eclipse occurred at the Moon's descending node of orbit on Tuesday, July 11, 2010,[1][2][3] with a magnitude of 1.058. 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.

## Visibility[edit]

Animated map of the eclipse's visibility over the southern Pacific Ocean

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.[4]

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."[5]

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.

## Observations[edit]

The moon's diameter was 5.805% larger than the sun's, represented by the magnitude of eclipse of the table above, making for a relatively long eclipse duration of 5 minutes, 20.24 seconds. Time lapse images of the eclipse as seen from Viña del Mar, Chile

Total eclipse began 750 kilometers (470 mi) southeast of Tonga at approximately 18:15 UTC and reached Easter Island by 20:11 UTC.[6] 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,[7] 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,[4] where it was observed for the first time in 1,400 years.[8] Approximately 4,000 observers visited Easter Island for this eclipse, including tourists, scientists, photographers, filmmakers and journalists,[9] 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%.[6][10] 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.[11] 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.[4]

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.[12]

## Related eclipses[edit]

### Eclipses of 2010[edit]

* An annular solar eclipse on January 15.
* A partial lunar eclipse on June 26.
* A total solar eclipse on July 11.
* A total lunar eclipse on December 21.

### Metonic[edit]

* Preceded by: Solar eclipse of September 22, 2006
* Followed by: Solar eclipse of April 29, 2014

### Tzolkinex[edit]

* Preceded by: Solar eclipse of May 31, 2003
* Followed by: Solar eclipse of August 21, 2017

### Half-Saros[edit]

* Preceded by: Lunar eclipse of July 5, 2001
* Followed by: Lunar eclipse of July 16, 2019

### Tritos[edit]

* Preceded by: Solar eclipse of August 11, 1999
* Followed by: Solar eclipse of June 10, 2021

### Solar Saros 146[edit]

* Preceded by: Solar eclipse of June 30, 1992
* Followed by: Solar eclipse of July 22, 2028

### Inex[edit]

* Preceded by: Solar eclipse of July 31, 1981
* Followed by: Solar eclipse of June 21, 2039

### Triad[edit]

* Preceded by: Solar eclipse of September 10, 1923
* Followed by: Solar eclipse of May 11, 2097

### Solar eclipses of 2008–2011[edit]

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.[13]

Solar eclipse series sets from 2008 to 2011  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

Palangka Raya, Indonesia  | 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.

### Saros 146[edit]

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

### Metonic series[edit]

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

## Notes[edit]

1. ^ a b "Total Solar Eclipse of 2010 July 11". NASA. Archived from the original on March 11, 2008. Retrieved July 12, 2010.
2. ^ "Chasing a moment in the sun". The Ottawa Citizen. 2010-07-11. p. 12. Retrieved 2023-10-25 - via Newspapers.com.
3. ^ "Solar eclipse fans chase moment (out of) sun". The Des Moines Register. 2010-07-11. p. 12. Retrieved 2023-10-25 - via Newspapers.com.
4. ^ a b c Malik, Tariq (July 12, 2010). "Total solar eclipse blots out sun, amazes skywatchers". The Christian Science Monitor. Retrieved July 12, 2010.
5. ^ "Solar Eclipse to Darken Easter Island Sunday". National Geographic Society. July 8, 2010. Archived from the original on July 12, 2010. Retrieved July 12, 2010.
6. ^ a b "Total solar eclipse crosses South Pacific". BBC News. July 11, 2010. Retrieved July 12, 2010.
7. ^ Grossman, Lisa (July 22, 2010). "Longest Eclipse Ever: Airplane Chases the Moon's Shadow". Wired. Retrieved August 21, 2017.
8. ^ "Solar Eclipse to Darken Easter Island Sunday". National Geographic. July 8, 2010. Archived from the original on October 31, 2020. Retrieved October 28, 2020.
9. ^ Eclipse chasing: four minutes of bliss Archived 2013-06-27 at the Wayback Machine, Australian Geographic, July 16, 2010
10. ^ Tee, Gillian (July 10, 2010). "Solar eclipse predicted at same time as World Cup final". CNN. Retrieved July 12, 2010.
11. ^ "French Polynesia awaits first solar eclipse in 350 years". Australia Network. July 10, 2010. Archived from the original on July 13, 2010. Retrieved July 12, 2010.
12. ^ "6.2 Magnitude Earthquake Strikes Chile Hours After Solar Eclipse". All Headline News. July 12, 2010. Archived from the original on July 14, 2010. Retrieved July 12, 2010.
13. ^ 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.

## References[edit]

Wikimedia Commons has media related to Solar eclipse of 2010 July 11.

* Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
* Google interactive map
* Besselian elements
* NASA pdf map
* NASA homepage for July 11 2010 total solar eclipse
* NASA: Eclipses During 2010: Total Solar Eclipse of July 11
* Eclipser: 2010 July 11 Total Solar Eclipse
* Eclipse.org.uk: Total Eclipse of the Sun: 2010 July 11 Archived 2010-03-09 at the Wayback Machine
* www.spaceweather.com
* Easter Island Eclipse, APOD 7/14/2010
* Andes Sunset Eclipse, APOD 7/15/2010, totality from 400 meters above Argentino Lake
* The Crown of the Sun, APOD 7/21/2010, totality from Easter Island
* Diamond Ring and Shadow Bands, APOD 7/24/2010, totality from Hao, French Polynesia
* Eclipse on the Beach, APOD 7/30/2010, totality from Anakena Beach, Easter Island
* Eclipse Shadow Cone Over Patagonia, APOD 8/4/2010, totality from Patagonia, Argentina

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