Star or lunar mansion
Suiyōsei
水曜星
This star deity is listed third among the Nine Luminaries (Kuyō). The Nine Luminaries are a group made up of the sun, the moon, the five planets, and Ragō and Keito. Ragō and Keito are not actual planets; they are connected with the points where the apparent paths of the moon and the sun cross.
This introduction is based on materials from Shōhōin (Tobi Fudō). It is summarized within the scope of the beliefs and traditions those materials convey, and does not present explanations or customs common to all schools, shrines, and temples.
English pages are the site’s own translations of its Japanese pages. The sources cited are in Japanese. 日本語で読む
The name and role of Suiyōsei
This star deity is listed third among the Nine Luminaries. Its principal deity (honzon) is said to be Seishi Bosatsu, and its direction north. Good and bad fortune according to the year are recorded, but they are not covered here.
Source: 飛不動尊 正宝院・飛不動尊 正宝院・飛不動尊 正宝院
Tracing the form and traditions
The text indicates that the principal deity is Seishi Bosatsu and that the direction is north. There is no description of form or attributes.
Source: 飛不動尊 正宝院・飛不動尊 正宝院・飛不動尊 正宝院
The Nine Luminaries: heavenly bodies represented as deities
The Nine Luminaries are the Seven Luminaries (sun, moon, Mercury, Venus, Mars, Jupiter, and Saturn) with Ragō and Keito added. Ragō and Keito are concepts connected with the points where the apparent paths of the moon and the sun cross, not two planets visible to the naked eye. This page introduces images that represent heavenly bodies as Buddhist deities.
Source: 飛不動尊 正宝院
Prayers in star festivals to remove misfortune and invite good fortune
Shōhōin explains the hoshi matsuri (star festival) as a Buddhist service that worships the Nine Luminaries and the Twenty-eight Mansions, praying to remove misfortune and invite good fortune. In the group called the Nine Luminaries, knowledge for tracking the movements of the heavens overlaps with the wish to spend each day in peace.
Source: 飛不動尊 正宝院
Mantra (in Japanese, as written in the sources)
オンボダ、ノウキシャタラ、ソハビノウケイドマ、ソワカ
Source: 高野山真言宗 宝泉寺（金沢・五本松）
Shown as written in the Japanese sources. This site does not set how or how many times to recite it.
Related kami and buddhas
Sources (in Japanese)
- 飛不動尊 正宝院「仏様の世界：水曜星」（2026-10-14 確認）
- 飛不動尊 正宝院「仏様の世界：目次」（2026-10-14 確認）
- 飛不動尊 正宝院「仏様の世界：九曜星」（2026-10-14 確認）
- 高野山真言宗 宝泉寺（金沢・五本松）「よく使われる真言【永久保存版】」（2026-10-20 確認）