At a distance of $d = 87\,\mathrm{Mpc}$, with a Hubble constant of roughly $H_0 = 70\,\mathrm{km}\,\mathrm{s}^{-1}\,\mathrm{Mpc}^{-1}$ cosmological expansion should make the host galaxy UGC 11723 recede at $v=H_0 \,d\simeq6100 \,\mathrm{km}\,\mathrm{s}^{-1}$.
However, galaxies also move through space, at typical velocities from several
$100\,\mathrm{km}\,\mathrm{s}^{-1}$ in galaxy groups (e.g Carlberg et al. 2000) to some $1000\,\mathrm{km}\,\mathrm{s}^{-1}$ in rich clusters (e.g Girardi et al. 1993; Karachentsev et al. 2006).
The observed velocity of $4900\,\mathrm{km}\,\mathrm{s}^{-1}$ (Falco et al. 2006) is hence $\sim1200\,\mathrm{km}\,\mathrm{s}^{-1}$ smaller than the Hubble flow, but quite consistent with what may be expected.
This is why supernovae at such small distances cannot be used to deduce the Hubble constant, unless a very large number is observed such that statistical errors cancel out.