2005IAUC.8579....2L

D. C. Leonard, California Institute of Technology, reports that a CCD spectrum (range 340-900 nm) of SN 2005cz (IAUC 8569), obtained on July 28 UT with the Keck I 10-m telescope (+ LRISp), shows it to be a type-Ib supernova, about 1-2 weeks after maximum light. Although somewhat contaminated by host-galaxy light, the spectrum is quite similar to SN 1998dt at 8 days past maximum (see Matheson et al. 2001, A.J. 121, 1648).