An astronomical body, XXX, orbits a star in a highly elliptical orbit with an eccentricity of 0.96. Another body, YYY, orbits a planet in a nearly circular orbit. Which of the following correctly classifies bodies X X\,X and YYY, and describes the change in the linear orbital speed of X X\,X as its distance from the star increases?
XXX is a moon, YYY is a comet, and the orbital speed of XXX decreases.
XXX is a comet, YYY is a moon, and the orbital speed of XXX decreases.
XXX is a comet, YYY is a moon, and the orbital speed of XXX increases.
XXX is a planet, YYY is a moon, and the orbital speed of XXX remains constant.
