Nova Sgr 2001 immediate prediscovery negative observation by Y. Nakamura Yuji Nakamura (Suzuka, Mie, Japan) reports the following immediate prediscovery negative observation of Nova Sgr 2001. 2001 Feb. 20.852 UT fainter than 11.1 Instruments: 200mm F/4 lens, unfiltered Tri-X film, 5-min exposure The limiting magnitude was estimated using GSC. This observation indicates that the major rise of the nova took place within a narrow period between Feb. 21 and 23. Regards, Taichi Kato VSNET format: SGRnova2001 20010220.852 <111p Nry