2008CBET.1428....1P

G. Pignata, J. Maza, M. Hamuy, R. Antezana, L. Gonzalez, P. Gonzalez, P. Lopez, S. Silva, G. Folatelli, and D. Iturra, Universidad de Chile; and D. Reichart, K. Ivarsen, A. Crain, D. Foster, M. Nysewander, and A. LaCluyze, University of North Carolina at Chapel Hill, on behalf of the CHASE project, report the discovery of an apparent supernova (mag approximately 17.5 ± 0.3) on a R-band images taken on July 1.22 and 3.22 UT with the 0.41-m "PROMPT 5" telescope located at Cerro Tololo. The new object is located at R.A. = 00h10m46s.05 ± 0".1, Decl. = -47o04'10".6 ± 0".1 (equinox 2000.0), which is about 5".7 east and 17".5 north of center of the galaxy ESO 241-G23. Nothing is visible at this position on archival images taken on 2007 Nov. 15.20 and Dec. 3.21 (limiting mag 18.5).