Comet C/2007 s2 (lemmon) Baransky, A. ; Zhdanov, A. ; Bezpalko, M. ; Torres, D. ; Kracke, R. ; Spitz, G. ; Kistler, J. ; Stuart, J. ; Scruggs, S. ; Muler, G. ; Marsden, B. G. Abstract Publication: Minor Planet Electronic Circulars Pub Date: November 2007 Bibcode: 2007MPEC....V...99B