This is simply the Greek spelling of the name. “Cerberus” is already the name of an asteroid, 1865 Cerberus. Therefore, the Greek name is used to avoid confusion. This went to a public vote and accepted by the IAU so we all use the same names. Cerberus — or Kerberos in Greek — was a many-headed dog that guarded the entrance to the underworld, according to mythology.
This is simply the Greek spelling of the name. “Cerberus” is already the name of an asteroid, 1865 Cerberus. Therefore, the Greek name is used to avoid confusion. This went to a public vote and accepted by the IAU so we all use the same names. Cerberus — or Kerberos in Greek — was a many-headed dog that guarded the entrance to the underworld, according to mythology.