| "Planetarium" | ||||
|---|---|---|---|---|
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| Single by Ai Otsuka | ||||
| from the album Love Cook | ||||
| Released | September 21, 2005 | |||
| Recorded | 2005 | |||
| Genre | Pop | |||
| Label | avex trax AVCD-30768/B (Japan, CD+DVD) AVCD-30769 (Japan, CD) | |||
| Ai Otsuka singles chronology | ||||
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"Planetarium" (プラネタリウム, Puranetariumu) is Ai Otsuka's tenth single, which was released on 21 September 2005. The single had great success and became Otsuka's second #1 hit on the Oricon charts, selling 316,425 copies. In 2005, Planetarium sold 215,114 copies, making it the #41 best-selling single of the year.[1] However, it still charted into the next year and was the #99 best-selling single in 2006, selling 100,555 copies. Planetarium is her second best-selling single after "Sakuranbo."[2]
"Planetarium" was featured on Ai Otsuka's studio-album Love Cook. It was also used as an OST for the Japanese drama Hana Yori Dango.