The celestial equator passes through 15 major constellations, including 5 from the Zodiac:
Orion is a prominent constellation located on the celestial equator and visible throughout the world.
The constellation known as the Unicorn is Monoceros. It is located near the celestial equator and is not very prominent in the night sky.
The stellar south pole is located in the constellation Octans. This constellation is relatively faint and is situated in the southern celestial hemisphere. The south celestial pole itself is not associated with any bright stars, but Octans contains the star Sigma Octantis, which is the closest star to the south celestial pole.
celestial equator
There is no constellation named after the unicorn, but there is Pegasus the flying horse from Greek mythology.
Orion is a prominent constellation located on the celestial equator and visible throughout the world.
The closest constellation to Earth is Centaurus, which is approximately 4.39 light-years away. This constellation is located in the southern celestial hemisphere and contains several bright stars, including Alpha Centauri, the closest star system to the Sun.
The constellation known as the Unicorn is Monoceros. It is located near the celestial equator and is not very prominent in the night sky.
I don't know which is actually "closest", but all of these constellations border Dorado: Caelum Horologium Reticulum Hydrus Mensa Volans Pictor
The stellar south pole is located in the constellation Octans. This constellation is relatively faint and is situated in the southern celestial hemisphere. The south celestial pole itself is not associated with any bright stars, but Octans contains the star Sigma Octantis, which is the closest star to the south celestial pole.
Ophiuchus is a constellation located around the celestial equator. Its receives it's name from the Greek Ὀφιοῦχος meaning "serpent-bearer", and is usually deplicted as a man holding the snake that is seen by the constellation Serpens.
celestial equator
There is no constellation named after the unicorn, but there is Pegasus the flying horse from Greek mythology.
You can see the constellation Monoceros in the celestial equator region of the night sky. It is located near the Orion constellation and can be visible in the northern hemisphere during winter months.
Monoceros is a faint constellation located in the celestial equator. Its name means "unicorn" in Greek, and it is often depicted as a mythical unicorn. Monoceros is best known for its association with the bright star Beta Monocerotis.
Celestial Equator
No, the celestial equator does not always pass directly overhead. The position of the celestial equator in the sky is determined by the observer's latitude on Earth. If the observer is located at the equator, the celestial equator will pass directly overhead. However, for observers at different latitudes, the celestial equator will appear at an angle to the horizon.