Further observational work will need to be done on the object to determine the exact distance and the mass of the dense companion object.
(Further observational work; will need; to be done on the object to determine the exact distance and the mass of the dense companion object) (Further observational work; to be done; T:on the object; to determine the exact distance and the mass of the dense companion object)
Further observational work Further observational work
will need to be done
to be done on the object to determine the exact distance and the mass of the dense companion object
T:on the object to determine the exact distance and the mass of the dense companion object