Mizusawa (水沢市, Mizusawa-shi) was a city located in Iwate Prefecture, Japan. It is currently part of the city of Ōshū. Mizusawa is home to one of the six International Latitude Observatories. The observatories were close to the parallel of 39 degrees 8 minutes north latitude. They worked together to study the Earth's "wobble" using stars selected by Dr. Kimura, the astronomer in charge of the Mizusawa station. Twelve groups of stars that had six pairs of stars each were chosen. Two groups of stars were observed at each station following a schedule of dates, time, and duration prepared by Kimura.
Location of Mizusawa in Iwate Prefecture
|Merged||February 20, 2006|
(now part of Ōshū)
|• Total||96.92 km2 (37.42 sq mi)|
(September 1, 2005)
|• Density||621.53/km2 (1,609.8/sq mi)|
|Time zone||UTC+09:00 (JST)|
The town of Mizusawa was created on April 1, 1889, with the establishment of the municipalities system. The city was founded on April 1, 1954 when Mizusawa Town merged with the neighboring villages of Anetai, Shinjo, Sakuragawa, Kuroishi and Haneda. On February 20, 2006, Mizusawa, along with the city of Esashi, the towns of Isawa and Maesawa, and the village of Koromogawa (all from Isawa District), was merged to create the city of Ōshū, and no longer exists as an independent municipality.
- Ōshū official website (in Japanese)
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