Abstract
We present BVRCIC broad-band CCD photometry of the Type Ia supernova SN 2004S, which appeared in the galaxy MCG–05-16-021, obtained during 2004 February 12 to March 22. We present multiband and bolometric light curves constructed using our data as well as other available data. The time of the B-band maximum and the peak magnitudes in different bands are obtained using fits of light-curve and colour templates. We clearly see a strong shoulder in the RC band and a second maximum in the IC band. SN 2004S closely resembles SN 1992al after maximum. From the peak bolometric luminosity, we estimate the ejected mass of 56 Ni to be 0.41 M⊙.
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