《汉书·志·天文志》
《甘氏》上说，在建星和婺女宿出现，《太初历》上说在营室宿、东壁宿出现。
《甘氏》在建星、婺女。《太初历》在营室、东壁。
Gan's book said that it appeared in the star of establishment and the star of the Milky Way, and the Taichu calendar said that it appeared in the star of the camp room and the star of the east wall.