Which solar system object was found on January 1,1801,located between the orbits of Mars and Jupiter?

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On January 1, 1801, Italian astronomer Giuseppe Piazzi discovered a new object orbiting between Mars and Jupiter, which he thought was a new planet. Later, when more similar objects were discovered, they were classified as asteroids. This first asteroid was named Ceres, and it is the largest object in the asteroid belt.

Which Solar System Object Was Found on January 1,1801,located Between