A small (70-100 nm) cytoplasmic granule that contains a number of centrosomal proteins; centriolar satellites traffic toward microtubule minus ends and are enriched near the centrosome. [ GOC:BHF http://www.ncbi.nlm.nih.gov/pubmed/10579718 http://www.ncbi.nlm.nih.gov/pubmed/12403812 ]