asteroid Ceres
Relevance.
Asteroid 15420 or the Aedouglass
relevance
irrelevant.
The name is meteor.
The asteroid does not have a name, but has the designation 2012 DA14
Most asteroids are, not surprisingly called asteroid's. However some of the larger ones are refereed to as dwarf planets (Ceres) others planetoids or minor planets.
The noun form of the verb pertain is "pertinence".
Planetoid is another name for an asteroid. See the related link for more information.
ceres
It was not an asteroid. It was a planet. The name starts with an 'M'.