1. Zero Velocity: This is the defining characteristic of an object at rest. Velocity refers to the rate of change of position, and an object at rest has no change in position over time.

2. Constant Position: The object's position remains unchanged relative to a fixed reference point. This means the object is stationary.

3. Zero Acceleration: Acceleration is the rate of change of velocity. Since the object at rest has zero velocity, its velocity is not changing, and therefore its acceleration is zero.

4. Constant Momentum: Momentum is the product of mass and velocity. Since the object at rest has zero velocity, its momentum is also zero.

5. Potential Energy (Depending on context): An object at rest can have potential energy depending on its position. For example, a ball held above the ground has gravitational potential energy.

6. No Kinetic Energy: Kinetic energy is the energy of motion. Since the object is at rest, it has no kinetic energy.

Important Note: These properties are only true when the object is truly at rest in an inertial frame of reference. An inertial frame of reference is one that is not accelerating. If the object is at rest relative to a non-inertial frame, such as a moving car, it will have a non-zero velocity and momentum relative to a stationary observer.