If an object is made of a material then that object has the properties of that material.
An asteroid is a rock-like object with an irregular shape.
If an asteroid is made of a material then that asteroid has the properties of that material.
If an asteroid is made of a material then what does the asteroid have?

(1) electromagnetic energy
(2) that material's properties
(3) that material's soul
(4) that material's size
(5) nothing special
(6) Something to move
(7) hard outer covering
(8) visible energy