Yes, a lot smaller
Their physical size is comparable to that of earth, so yes, they are small. According to the kepler's third law calculator I just used the orbit is around 500 000 km which is a little less than the radius of our own sun. The orbital velocity would be around 400 km/s.
The fact that they collapse to such a small volume allows you to fall pretty deep into the gravity well.
Biting the hand that feeds IT
