Comets C/2008 C6, 2008 C7, 2008 C8, 2000 C9 (soho) Zhou, B. ; Su, H. ; Sachs, J. ; Kracht, R. ; Battams, K. ; Marsden, B. G. Abstract Publication: Minor Planet Electronic Circulars Pub Date: June 2008 Bibcode: 2008MPEC....L...18Z