Answer:
The Roche limit of the mars is higher than if it was near to the sun.
Step-by-step explanation:
- The Roche limit determines the possibility of the orbit around the planet.
- The Roche limit is the distance within which a moon could be held together by the planet's own force of gravity or else the moon will disintegrate due to the sun's tidal forces exceeding the planet's gravitational force.
- The Roche limit increases with the increase in distance from the sun if planet's mass is kept constant.
- The gravitational force of the mars above its atmosphere could trap a moon which is within the Roche limit.
- If the mars was closer to the sun, it would have a smaller Roche radius where the orbit of the moon will not be possible. So, the Mars have moons even when its mass is small.