The first asteroid to be discovered and an object discovered by Clyde Tombaugh are also, for 10 points, what type of celestial body in the solar system that includes Eris, Ceres, and Pluto and are named for their size?
One body in this classification contains a notable amount of methane and is named after the god of fertility from the religion of the Easter Island inhabitants because of its previous designation Easter Bunny, while another formerly known as Santa is known for its ellipsoid shape; those two,  Makemake and Haumea, are also classified as plutoids.  The first asteroid to be discovered and an object discovered by Clyde Tombaugh are also, for 10 points, what type of celestial body in the solar system that includes Eris, Ceres, and Pluto and are named for their size?
One body in this classification contains a notable amount of methane and is named after the god of fertility from the religion of the Easter Island inhabitants because of its previous designation Easter Bunny, while another formerly known as Santa is known for its ellipsoid shape; those two,  Makemake and Haumea, are also classified as plutoids.  
{dwarf} planet [accept {plutoid} before it is read; do not prompt on planet]