Comet Observations [300 Bisei Spaceguard Center--BATTeRS] Asami, A. ; Hashimoto, N. ; Nishiyama, K. ; Okumura, S. ; Sakamoto, T. ; Urakawa, S. Abstract Publication: Minor Planet Circulars Pub Date: December 2011 Bibcode: 2011MPC..77127..15A