Complex sentence: Another issue is that the object is not alone, but orbits in the Kuiper Belt along with Pluto and at least 700 other objects the status of the new object remains officially unclear and Pluto's status may be in jeopardy.
Split into simpler sentences: Another issue is that the object is not alone, but orbits in the Kuiper Belt along with Pluto and at least 700 other objects. The status of the new object remains officially unclear and Pluto's status may be in jeopardy.