2017ApJ...842..112R

We study the light curve of SN 1604 using the historical data collected at the time of observation of the outburst. Comparing the supernova with recent SNe Ia of various rates of decline after maximum light, we find that this event looks like a normal SN Ia (stretch s close to 0.9 : 0.9 ± 0.13), a fact that is also favored by the late light curve. The supernova is heavily obscured by 2.7 ± 0.1 mag in V. We obtain an estimate of the distance to the explosion with a value of d=5±0.7  kpc. This can help to settle ongoing discussions on the distance to the supernova. It also shows that this supernova is of the same kind as those of the SN Ia samples that we now use for cosmology.