asteroids are a large number of small rocky bodies of about 1000 km or less diameters which orbit around the sun between the orbit of mars and jupiter. there are only one lakh asteroids.
Denila Longjam answered this
what is astroid
Aniket Karan answered this
Asteroids are very small planets or planetoids that are found mainly in a belt between the orbit of Mars and Jupiter . Each asteroid has its own orbit .There are 500 asteroids which are larger than 48 km in diameter.