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天津增十九
鎖定
- 參考資料
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- 1. Cygnus (Chinese astronomy) - Infogalactic: the planetary knowledge core .Infogalactic[引用日期2021-08-15]
- 2. 52 Cygni - Infogalactic: the planetary knowledge core .Infogalactic[引用日期2021-08-15]
- 3. Veil Nebula - Infogalactic: the planetary knowledge core .Infogalactic[引用日期2021-08-15]
- 4. 52 Cygni - Star in Cygnus | TheSkyLive.com .TheSkyLive[引用日期2021-08-15]