PDS_VERSION_ID = PDS3 OBJECT = REFERENCE REFERENCE_KEY_ID = "MCGREGORETAL1996" REFERENCE_DESC = "McGregor, P.J., P.D. Nicholson, M.G. Allen, near-infrared observations of the impacts of fragments C, D, G, K, N, R, V, and W of Comet P/Shoemaker-Levy 9 with Jupiter from the ground, Icarus, 121 361-388, 1996." END_OBJECT = REFERENCE OBJECT = REFERENCE REFERENCE_KEY_ID = "MCGREGOR1996" REFERENCE_DESC = "McGregor, P.J., private communication, 07 NOV 1996." END_OBJECT = REFERENCE OBJECT = REFERENCE REFERENCE_KEY_ID = "LANDOLT1992" REFERENCE_DESC = "Landolt, A.U., UBVRI photoelectric observations of 526 stars in the magnitude range of 11.5