Celbalrai, known as Beta Ophiuchi, is a star in the constellation Ophiuchus.
Messier 107, a globular cluster in the constellation Ophiuchus
Messier 62, a globular cluster in the constellation Ophiuchus.
In this he introduces a new, speculative astrological theory which includes Ophiuchus to employ 13 zodiac constellations and proposes the replacement of the ascendant with the place of the Moon on the ecliptic.