What is the thirteenth house of the zodiac?

Ophiuchus. The thirteenth house above the zodiac.

Ophiuchus is the thirteenth zodiac sign after the classical zodiac sign, but in fact, most people have a misunderstanding. The work of the International Astronomical Union is only to systematically sort out the 88 constellations in the whole day and divide their respective sky regions. It was not until 1928 that the ecliptic passed through Ophiuchus. As early as 1825, we found that astronomers at that time had long known that Ophiuchus was located on the ecliptic, which also showed that astronomy and astrology had already parted ways at this time.

The well-known zodiac is actually an astrological term. Historically, ancient astronomy is closely related to astrology. With an objective and scientific attitude, this paper will briefly describe the historical development of the zodiac and its position in modern astronomy, and explore the historical significance of astrology.