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Solar eclipse of July 22, 2009

A total solar eclipse occurred at the Moon's descending node of orbit on Wednesday, July 22, 2009, with a magnitude of 1.07991. 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. Occurring about 5.5 hours after perigee, the Moon's apparent diameter was larger.

Visibility
The total eclipse was visible from a narrow corridor through northern India, eastern Nepal, northern Bangladesh, Bhutan, the northern tip of Myanmar, central China and the Pacific Ocean, including the northern part of the Ryukyu Islands, the whole Volcano Islands except South Iwo Jima, Marshall Islands, and Kiribati. Totality was visible in many large cities, including Dhaka and Dinajpur, and Chapai Nawabganj district in Bangladesh; Surat, Vadodara, Bhopal, Varanasi, Patna, Gaya, Siliguri, Tawang and Guwahati in India; and Chengdu, Nanchong, Chongqing, Yichang, Jingzhou, Wuhan, Huanggang, Hefei, Hangzhou, Wuxi, Huzhou, Suzhou, Jiaxing, Ningbo, Shanghai as well as over the Three Gorges Dam in China. However, in Shanghai, the largest city in the eclipse's path, the view was obscured by heavy clouds. According to NASA, the Japanese island Kitaio Jima was predicted to have the best viewing conditions featuring both longer viewing time (being the closest point of land to the point of greatest eclipse) and lower cloud cover statistics than all of continental Asia. Most of the path of totality was west of the 180th meridian, with only Nikumaroro in Kiribati east of it. However, time zone of the Phoenix Islands including Nikumaroro was changed from UTC−11 to UTC+13 in 1995, so total eclipse visible from land was completely on July 22. A partial eclipse was seen within the broad path of the Moon's penumbra, including most of Southeast Asia (all of Pakistan, India and China), East Asia, northern Oceania, and Hawaii. Most of these areas are west of the 180th meridian, seeing the eclipse on July 22, while a part of islands in the Pacific are east of the 180th meridian, seeing the eclipse on July 21. The eclipse, and the reaction of thousands of observers at Varanasi was captured by the Science Channel Wonders of the Universe series hosted by Brian Cox. This eclipse may be the most-viewed total solar eclipse in history, with 30 million people in Shanghai and Hangzhou alone. ==Observations==
Observations
for the eclipse in Varanasi, India. Thousands of pilgrims gathered on the banks of the Ganges River in Varanasi, India to experience the eclipse as a religious or spiritual event. Some people expected that there would be a relationship, either positive or negative, between their health and the occurrence of the eclipse. Indian scientists observed the solar eclipse from an Indian Air Force plane. The Chinese government used the opportunity to provide scientific education and to dispel any superstition. A flight by China Eastern Airlines from Wuhan to Shanghai took a slight detour and followed the course of the eclipse to allow longer observation time for the scientists on board. Observers in Japan were excited by the prospect of experiencing the first eclipse in 46 years, but found the experience dampened by cloudy skies obscuring the view. In Bangladesh, where the eclipse lasted approximately 3 minutes and 44 seconds, thousands of people were able to witness the eclipse despite rain and overcast skies. == Duration ==
Duration
of the full moon (near apogee) to the nearly new moon (visible by earthshine) on the day before the solar eclipse near lunar perigee. This solar eclipse was the longest total solar eclipse to occur in the 21st century, and will not be surpassed in duration until 13 June 2132 (Saros 139, ascending node) which will last for 6 minutes and 55 seconds. Totality lasted for up to 6 minutes and 38.86 seconds (0.14 seconds shorter than 6 minutes and 39 seconds), with the maximum eclipse occurring in the ocean at 02:35:21 UTC about 100 km south of the Bonin Islands, southeast of Japan. The uninhabited North Iwo Jima island was the landmass with totality time closest to maximum, while the closest inhabited point was Akusekijima, where the eclipse lasted 6 minutes and 26 seconds. The cruise ship Costa Classica was chartered specifically to view this eclipse and by viewing the eclipse at the point of maximum duration and cruising along the centerline during the event, duration was extended to 6 minutes, 42 seconds. The eclipse was part of Saros series 136, descending node, as was the solar eclipse of July 11, 1991, which was slightly longer, lasting up to 6 minutes 53.08 seconds (previous eclipses of the same saros series on June 30, 1973, and June 20, 1955, were longer, lasting 7 min 03.55 and 7 min 07.74, respectively). The next event from this series will be on August 2, 2027 (6 minutes and 22.64 seconds). The exceptional duration was a result of the Moon being near perigee, with the apparent diameter of the Moon 7.991% larger than the Sun (magnitude 1.07991) and the Earth being near aphelion where the Sun appeared slightly smaller. In contrast the annular solar eclipse of January 26, 2009 (Saros 131, ascending node) occurred 3.3 days after lunar apogee and 7.175% smaller apparent diameter to the Sun. And the next solar eclipse of January 15, 2010 (Saros 141, ascending node) was also annular, 1.8 days before lunar apogee, with the Moon 8.097% smaller than the Sun. == Eclipse timing ==
Eclipse timing
Places experiencing total eclipse Places experiencing partial eclipse == Gallery ==
Gallery
Totality Image:Total solar eclipse on 22nd July at Varanasi,India.jpg|Totality from Varanasi, India Image:Solar eclipse diamond ring 22 July 2009 taken by Lutfar Rahman Nirjhar from Bangladesh.jpg|Diamond ring effect in Kurigram District, Bangladesh Image:Total ecplise of the sun from Panchaghar bangladesh Muntasir mamun imran.JPG|Totality from Panchagarh District, Bangladesh Panchagarh District, Bangladesh Image:Solar Eclipse 22 July 2009 taken by Ugyen Dorji from Bhutan.jpg|Totality from Thimphu, Bhutan Image:在北碚拍摄的贝利珠.jpg|Diamond ring effect in Chongqing, China Image:Solar eclipse of 2009 July 22 near Hangzhou.jpg|Totality from Hangzhou, China Image:TOTAL ECLIPSE 20090722 WUZHEN CHINA.jpg|Totality from Wuzhen, China Image:Kubotake - Diamond ring on 22 Jul. 2009 (by).jpg|Diamond ring effect in Kikaijima, Japan Partial Image:Solar Eclipse New Delhi ICGEB.jpg|Partial from New Delhi, India Image:Partial eclipse Kolkata 22July.jpg|Partial from Kolkata, India Image:Partial solar eclipseat IIT KGP.JPG|Partial from Kharagpur, India Image:Solar eclipse 2009 07 22 wuhan china.png|Eclipse progression from Wuhan, China Image:Sun eclipse 2009-07-22 Beijing.jpg|Partial from Beijing, China Image:Solar eclipse 22 July 2009 taken by Yichen Wang from Tianjin.jpg|Partial from Tianjin, China Image:Partial solar eclipse over Sheung Shui 2.JPG|Partial from Sheung Shui, Hong Kong Image:07222009 solar eclipse manila rp.JPG|Partial from Quezon City, Philippines Image:20090722 1004h Partial Eclipse (Makati City, Philippines).jpg|Partial from Makati City, Philippines Image:Solar partial eclipse of July 22, 2009 in Taichung ,of Taiwan.jpg|Partial from Taichung, Taiwan Image:Solar Eclipse July 22 2009 Incheon 104513KST.jpg|Partial from Incheon, South Korea Image:Partial Solar eclipse Miyazaki 2009.jpg|Partial from Miyazaki City, Japan Image:Eclipse 7-21-09 (1).jpg|Partial from Honolulu, HI == View from space ==
View from space
The Terrain Mapping Camera in the Chandrayaan-1 lunar mission was used to image the Earth during the eclipse. It was also observed by the Japanese geostationary satellite MTSAT: == Eclipse details ==
Eclipse details
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. == Eclipse season ==
Eclipse season
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. == Related eclipses ==
Related eclipses
Eclipses in 2009 An annular solar eclipse on January 26A penumbral lunar eclipse on February 9A penumbral lunar eclipse on July 7A total solar eclipse on July 22A penumbral lunar eclipse on August 6A partial lunar eclipse on December 31 Metonic • Preceded by: Solar eclipse of October 3, 2005 • Followed by: Solar eclipse of May 10, 2013 Tzolkinex • Preceded by: Solar eclipse of June 10, 2002 • Followed by: Solar eclipse of September 1, 2016 Half-Saros • Preceded by: Lunar eclipse of July 16, 2000 • Followed by: Lunar eclipse of July 27, 2018 Tritos • Preceded by: Solar eclipse of August 22, 1998 • Followed by: Solar eclipse of June 21, 2020 Solar Saros 136 • Preceded by: Solar eclipse of July 11, 1991 • Followed by: Solar eclipse of August 2, 2027 Inex • Preceded by: Solar eclipse of August 10, 1980 • Followed by: Solar eclipse of July 2, 2038 Triad • Preceded by: Solar eclipse of September 21, 1922 • Followed by: Solar eclipse of May 22, 2096 Solar eclipses of 2008–2011 Saros 136 Metonic series Tritos series Inex series ==Notes==
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