Answer:
If modified, orbits will be more elongated instead o circular because the effect on them will be an orbital increased drag.
Step-by-step explanation:
To understand this phenomenon, we need to understand the context. First of all, only a major event in the orbit will cause it to change. Because they can last until the star becomes a nebula and then absorbs the bodies that orbit it. Thus, if modified by a strong factor or event. The orbit will become more elongated because the event will make the planet or object lose it for a moment and push it farther from its regular orbit. This will cause a variance in it and it will drag the planet until it crashes with the star or greater object due to the variance and the elongated new orbit.